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Prof. Dr. rer. nat. Patrizio Neff

FB Mathematik

Anschrift
Thea-Leymann-Str. 9
45141 Essen
Raum
WSC-S-4.13
Telefon
+49 201 183 4243
Telefax
+49 201 183 4394
E-Mail
patrizio.neff@uni-due.de
Webseite
http://www.uni-due.de/mathematik/ag_neff/

Funktionen

  • Universitätsprofessor/in, Personal FB Mathematik, Campus Essen

  • Gruppe der Professorinnen und Professoren, Fakultätsrat

Die folgenden Publikationen sind in der Online-Universitätsbibliographie der Universität Duisburg-Essen verzeichnet. Weitere Informationen finden Sie gegebenenfalls auch auf den persönlichen Webseiten der Person.

    Artikel in Zeitschriften

  • d’Agostino, Marco Valerio; Holthausen, Sebastian; Bernardini, Davide; Sky, Adam; Ghiba, Ionel-Dumitrel; Martin, Robert J.; Neff, Patrizio
    A Constitutive Condition for Idealized Isotropic Cauchy Elasticity Involving the Logarithmic Strain
    In: Journal of Elasticity , Jg. 157 2025 , Nr. 1 , 23
    DOI, Online Volltext (Open Access)
  • Neff, Patrizio; Holthausen, Sebastian; Korobeynikov, Sergey N.; Ghiba, Ionel-Dumitrel; Martin, Robert J.
    A natural requirement for objective corotational rates : On structure-preserving corotational rates
    In: Acta Mechanica , Jg. 236 2025 , Nr. 4 , S. 2657 - 2689
    DOI (Open Access)
  • Mohammadi Saem, Maryam; Bulgariu, Emilian; Ghiba, Ionel-Dumitrel; Neff, Patrizio
    Explicit formula for the Γ-convergence homogenised quadratic curvature energy in isotropic Cosserat shell models
    In: Zeitschrift für Angewandte Mathematik und Physik (ZAMP) , Jg. 76 2025 , Nr. 2 , 76
    DOI (Open Access)
  • Knees, Dorothee; Owczarek, Sebastian; Neff, Patrizio
    Global regularity in a nonlinear relaxed micromorphic continuum on Lipschitz domains
    In: Calculus of Variations and Partial Differential Equations , Jg. 64 2025 , Nr. 2 , 60
    DOI
  • Federico, Salvatore; Holthausen, Sebastian; Husemann, Nina J; Neff, Patrizio
    Major symmetry of the induced tangent stiffness tensor for the Zaremba–Jaumann rate and Kirchhoff stress in hyperelasticity : Two different approaches
    In: Mathematics and Mechanics of Solids (MMS) 2025 , in press
    DOI (Open Access)
  • Sky, Adam; Neunteufel, Michael; Lewintan, Peter; Gourgiotis, Panos; Zilian, Andreas; Neff, Patrizio
    Novel Hdev(Curl)-conforming elements on regular triangulations and Clough–Tocher splits for the planar relaxed micromorphic model
    In: Computational Mechanics 2025 , in press
    DOI (Open Access)
  • Erel-Demore, Félix; Voss, Jendrik; Neff, Patrizio; Madeo, Angela
    Null-lagrangians in the micro-inertia contribution of the reduced relaxed micromorphic model. : Theoretical and computational insights with applications
    In: Archive of Applied Mechanics , Jg. 95 2025 , Nr. 2 , 50
    DOI (Open Access)
  • d’Agostino, Marco Valerio; Martin, Robert; Lewintan, Peter; Bernardini, Davide; Danescu, Alexandre; Neff, Patrizio
    On the representation of fourth- and higher-order anisotropic elasticity tensors in generalized continuum models
    In: Mathematics and Mechanics of Solids (MMS) 2025 , in press
    DOI, Online Volltext (Open Access)
  • Gastel, Andreas; Neff, Patrizio
    Regularity for a geometrically nonlinear flat Cosserat micropolar membrane shell with curvature
    In: Annales de l'Institut Henri Poincaré (C): Non Linear Analysis , Jg. 42 2025 , Nr. 1 , S. 163 - 207
    DOI (Open Access)
  • Neff, Patrizio; Husemann, Nina J.; Nguetcho Tchakoutio, Aurélien S.; Korobeynikov, Sergey N.; Martin, Robert J.
    The corotational stability postulate : Positive incremental Cauchy stress moduli for diagonal, homogeneous deformations in isotropic nonlinear elasticity
    In: International Journal of Non-Linear Mechanics , Jg. 174 2025 , 105033
    DOI (Open Access)
  • Sarhil, Mohammad; Scheunemann, Lisa; Lewintan, Peter; Schröder, Jörg; Neff, Patrizio
    A computational approach to identify the material parameters of the relaxed micromorphic model
    In: Computer Methods in Applied Mechanics and Engineering , Jg. 425 2024 , 116944
    DOI (Open Access)
  • Knees, Dorothee; Owczarek, Sebastian; Neff, Patrizio
    A global higher regularity result for the static relaxed micromorphic model on smooth domains
    In: Proceedings of the Royal Society of Edinburgh: Section A: Mathematics 2024 , in press
    DOI, Online Volltext (Open Access)
  • Ghiba, Ionel-Dumitrel; Lewintan, Peter; Sky, Adam; Neff, Patrizio
    An essay on deformation measures in isotropic thin shell theories : Bending versus curvature
    In: Mathematics and Mechanics of Solids (MMS) , Jg. 30 2024 , Nr. 6 , S. 1393 - 1432
    DOI, Online Volltext (Open Access)
  • Rizzi, Gianluca; d'Agostino, Marco Valerio; Voss, Jendrik; Bernardini, Davide; Neff, Patrizio; Madeo, Angela; d’Agostino, Marco Valerio
    From frequency-dependent models to frequency-independent enriched continua for mechanical metamaterials
    In: European Journal of Mechanics / A: Solids , Jg. 106 2024 , Nr. July-August , 105269
    DOI (Open Access)
  • Gourgiotis, Panos; Rizzi, Gianluca; Lewintan, Peter; Bernardini, Davide; Sky, Adam; Madeo, Angela; Neff, Patrizio
    Green's functions for the isotropic planar relaxed micromorphic model : Concentrated force and concentrated couple
    In: International Journal of Solids and Structures , Jg. 292 2024 , 112700
    DOI, Online Volltext (Open Access)
  • Sky, Adam; Muench, Ingo; Rizzi, Gianluca; Neff, Patrizio
    Higher order Bernstein–Bézier and Nédélec finite elements for the relaxed micromorphic model
    In: Journal of Computational and Applied Mathematics , Jg. 438 2024 , 115568
    DOI, Online Volltext (Open Access)
  • Sky, Adam; Hale, Jack S.; Zilian, Andreas; Bordas, Stéphane P.A.; Neff, Patrizio
    Intrinsic mixed-dimensional beam-shell-solid couplings in linear Cosserat continua via tangential differential calculus
    In: Computer Methods in Applied Mechanics and Engineering , Jg. 432 2024 , 117384
    DOI, Online Volltext (Open Access)
  • Gmeineder, Franz; Lewintan, Peter; Neff, Patrizio
    Korn-Maxwell-Sobolev inequalities for general incompatibilities
    In: Mathematical Models and Methods in Applied Sciences , Jg. 34 2024 , Nr. 3 , S. 523 - 570
    DOI, Online Volltext (Open Access)
  • Sky, Adam; Neunteufel, Michael; Lewintan, Peter; Zilian, Andreas; Neff, Patrizio
    Novel H(symCurl)-conforming finite elements for the relaxed micromorphic sequence
    In: Computer Methods in Applied Mechanics and Engineering , Jg. 418 2024 , 116494
    DOI, Online Volltext (Open Access)
  • Bulgariu, Emilian; Ghiba, Ionel-Dumitrel; Khan, Hassam; Neff, Patrizio
    Rayleigh waves in isotropic elastic materials with micro-voids
    In: International Journal of Solids and Structures , Jg. 290 2024 , 112661
    DOI, Online Volltext (Open Access)
  • Voss, Jendrik; Gourgiotis, Panos; Lewintan, Peter; Sky, Adam; Neff, Patrizio
    Yet another best approximation isotropic elasticity tensor in plane strain
    In: Mathematics and Mechanics of Complex Systems , Jg. 12 2024 , Nr. 4 , S. 547 - 571
    DOI
  • Saem, Maryam Mohammadi; Ghiba, Ionel-Dumitrel; Neff, Patrizio
    A Geometrically Nonlinear Cosserat (Micropolar) Curvy Shell Model Via Gamma Convergence
    In: Journal of Nonlinear Science , Jg. 33 2023 , Nr. 5 , 70
    DOI, Online Volltext (Open Access)
  • Ghiba, Ionel-Dumitrel; Birsan, Mircea; Neff, Patrizio
    A Linear Isotropic Cosserat Shell Model Including Terms up to O(h⁵) : Existence and Uniqueness
    In: Journal of Elasticity , Jg. 154 2023 , Nr. 1-4 , S. 579 - 605
    DOI, Online Volltext (Open Access)
  • Nebel, Lisa Julia; Sander, Oliver; Birsan, Mircea; Neff, Patrizio
    A geometrically nonlinear Cosserat shell model for orientable and non-orientable surfaces : Discretization with geometric finite elements
    In: Computer Methods in Applied Mechanics and Engineering , Jg. 416 2023 , 116309
    DOI, Online Volltext (Open Access)
  • Knees, Dorothee; Owczarek, Sebastian; Neff, Patrizio
    A local regularity result for the relaxed micromorphic model based on inner variations
    In: Journal of Mathematical Analysis and Applications , Jg. 519 2023 , Nr. 2 , 126806
    DOI, Online Volltext (Open Access)
  • Rizzi, Gianluca; Khan, Hassam; Ghiba, Ionel-Dumitrel; Madeo, Angela; Neff, Patrizio
    Analytical solution of the uniaxial extension problem for the relaxed micromorphic continuum and other generalized continua (including full derivations)
    In: Archive of Applied Mechanics , Jg. 93 2023 , Nr. 1: Mechanics of Size-Dependent Materials , S. 5 - 21
    DOI (Open Access)
  • Ghiba, Ionel-Dumitrel; Rizzi, Gianluca; Madeo, Angela; Neff, Patrizio
    Cosserat micropolar elasticity : Classical Eringen vs. dislocation form
    In: Journal of Mechanics of Materials and Structures (JoMMS) , Jg. 18 2023 , Nr. 1 , S. 93 - 123
    DOI, Online Volltext (Open Access)
  • Birsan, Mircea; Ghiba, Ionel-Dumitrel; Neff, Patrizio
    Existence results for the higher order linear Cosserat shell model
    In: Proceedings in Applied Mathematics and Mechanics (PAMM) , Jg. 22 2023 , Nr. 1 , e202200030
    DOI (Open Access)
  • Ghiba, Ionel-Dumitrel; Neff, Patrizio
    Linear constrained Cosserat-shell models including terms up to O(h⁵) : Conditional and unconditional existence and uniqueness
    In: Zeitschrift für Angewandte Mathematik und Physik (ZAMP) , Jg. 74 2023 , Nr. 2 , 47
    DOI, Online Volltext (Open Access)
  • Voss, Jendrik; Rizzi, Gianluca; Neff, Patrizio; Madeo, Angela
    Modeling a labyrinthine acoustic metamaterial through an inertiaaugmented relaxed micromorphic approach
    In: Mathematics and Mechanics of Solids (MMS) , Jg. 28 2023 , Nr. 10 , S. 2177 - 2201
    DOI, Online Volltext (Open Access)
  • Sarhil, Mohammad; Scheunemann, Lisa; Schröder, Jörg; Neff, Patrizio
    Modeling the size‐effect of metamaterial beams under bending via the relaxed micromorphic continuum
    92st Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM), 15. - 19. August 2023, Aachen,
    In: Proceedings in Applied Mathematics and Mechanics (PAMM) , Jg. 22 2023 , Nr. 1, Special Issue: 92nd Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM) , e202200033
    DOI (Open Access)
  • Sarhil, Mohammad; Scheunemann, Lisa; Schröder, Jörg; Neff, Patrizio
    On the identification of material parameters in the relaxed micromorphic continuum
    93st Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM), 30.Mai - 02.Juni 2023, Dresden,
    In: Proceedings in Applied Mathematics and Mechanics (PAMM) , Jg. 23 2023 , Nr. 3, Special Issue: 93rd Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM), , e202300056
    DOI (Open Access)
  • Gmeineder, Franz; Lewintan, Peter; Neff, Patrizio
    Optimal incompatible Korn–Maxwell–Sobolev inequalities in all dimensions
    In: Calculus of Variations and Partial Differential Equations , Jg. 62 2023 , Nr. 6 , 182
    DOI, Online Volltext (Open Access)
  • Martin, Robert; Voss, Jendrik; Sander, Oliver; Neff, Patrizio
    Remarks on rank‐one convexity and quasiconvexity for planar functions with an additive volumetric–isochoric split
    92st Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM), 15. - 19. August 2023, Aachen,
    In: Proceedings in Applied Mathematics and Mechanics (PAMM) , Jg. 22 2023 , Nr. 1, Special Issue: 92nd Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM) , e202200185
    DOI (Open Access)
  • Blesgen, Thomas; Neff, Patrizio
    Simple shear in nonlinear Cosserat micropolar elasticity : Existence of minimizers, numerical simulations, and occurrence of microstructure
    In: Mathematics and Mechanics of Solids (MMS) , Jg. 28 2023 , Nr. 7 , S. 1576 - 1602
    DOI, Online Volltext (Open Access)
  • Sarhil, Mohammad; Scheunemann, Lisa; Schröder, Jörg; Neff, Patrizio
    Size-effects of metamaterial beams subjected to pure bending : On boundary conditions and parameter identification in the relaxed micromorphic model
    In: Computational Mechanics , Jg. 72 2023 , Nr. 5 , S. 1091 - 1113
    DOI (Open Access)
  • Voss, Jendrik; Ghiba, Ionel-Dumitrel; Martin, Robert; Neff, Patrizio
    A rank-one convex, nonpolyconvex isotropic function on with compact connected sublevel sets
    In: Proceedings of the Royal Society of Edinburgh: Section A: Mathematics , Jg. 152 2022 , Nr. 2 , S. 356 - 381
    DOI
  • Rizzi, Gianluca; Hütter, Geralf; Khan, Hassam; Ghiba, Ionel-Dumitrel; Madeo, Angela; Neff, Patrizio
    Analytical solution of the cylindrical torsion problem for the relaxed micromorphic continuum and other generalized continua (including full derivations)
    In: Mathematics and Mechanics of Solids (MMS) , Jg. 27 2022 , Nr. 3 , S. 507 - 553
    DOI, Online Volltext (Open Access)
  • Rizzi, Gianluca; d’Agostino, Marco Valerio; Neff, Patrizio; Madeo, Angela
    Boundary and interface conditions in the relaxed micromorphic model : Exploring finite-size metastructures for elastic wave control
    In: Mathematics and Mechanics of Solids (MMS) , Jg. 27 2022 , Nr. 6 , S. 1053 - 1068
    DOI, Online Volltext (Open Access)
  • Khan, Hassam; Ghiba, Ionel-Dumitrel; Madeo, Angela; Neff, Patrizio
    Existence and uniqueness of Rayleigh waves in isotropic elastic Cosserat materials and algorithmic aspects
    In: Wave Motion , Jg. 110 2022 , 102898
    DOI, Online Volltext (Open Access)
  • Schröder, Jörg; Sarhil, Mohammad; Scheunemann, Lisa; Neff, Patrizio
    Lagrange and H(curl, B) based finite element formulations for the relaxed micromorphic model
    In: Computational Mechanics , Jg. 70 2022 , Nr. 6 , S. 1309 - 1333
    DOI (Open Access)
  • Lewintan, Peter; Neff, Patrizio
    Lp-trace-free generalized Korn inequalities for incompatible tensor fields in three space dimensions
    In: Proceedings of the Royal Society of Edinburgh: Section A: Mathematics , Jg. 152 2022 , Nr. 6 , S. 1477 - 1508
    DOI, Online Volltext (Open Access)
  • Rizzi, Gianluca; Neff, Patrizio; Madeo, Angela
    Metamaterial shields for inner protection and outer tuning through a relaxed micromorphic approach
    In: Philosophical Transactions of the Royal Society of London A: Mathematical, Physical and Engineering Sciences , Jg. 380 2022 , Nr. 2231 , 20210400
    DOI, Online Volltext (Open Access)
  • Voss, Jendrik; Martin, Robert; Ghiba, Ionel-Dumitrel; Neff, Patrizio
    Morrey’s Conjecture for the Planar Volumetric-Isochoric Split : Least Rank-One Convex Energy Functions
    In: Journal of Nonlinear Science , Jg. 32 2022 , Nr. 5 , 76
    DOI (Open Access)
  • Voss, Jendrik; Martin, Robert; Sander, Oliver; Kumar, Siddhant; Kochmann, Dennis M.; Neff, Patrizio
    Numerical Approaches for Investigating Quasiconvexity in the Context of Morrey’s Conjecture
    In: Journal of Nonlinear Science , Jg. 32 2022 , Nr. 6 , 77
    DOI (Open Access)
  • Sky, Adam; Muench, Ingo; Neff, Patrizio
    On [H1]3×3, [H(curl)]3 and H(sym Curl) finite elements for matrix-valued Curl problems
    In: Journal of Engineering Mathematics , Jg. 136 2022 , Nr. 1 , 5
    DOI (Open Access)
  • Klein, Dominik K.; Fernández, Mauricio; Martin, Robert; Neff, Patrizio; Weeger, Oliver
    Polyconvex anisotropic hyperelasticity with neural networks
    In: Journal of the Mechanics and Physics of Solids , Jg. 159 2022 , 104703
    DOI, Online Volltext (Open Access)
  • Sky, Adam; Neunteufel, Michael; Muench, Ingo; Schöberl, Joachim; Neff, Patrizio
    Primal and mixed finite element formulations for the relaxed micromorphic model
    In: Computer Methods in Applied Mechanics and Engineering , Jg. 399 2022 , 115298
    DOI, Online Volltext (Open Access)
  • d’Agostino, Marco Valerio; Rizzi, Gianluca; Khan, Hassam; Lewintan, Peter; Madeo, Angela; Neff, Patrizio
    The consistent coupling boundary condition for the classical micromorphic model : existence, uniqueness and interpretation of parameters
    In: Continuum Mechanics and Thermodynamics , Jg. 34 2022 , Nr. 6 , S. 1393 - 1431
    DOI, Online Volltext (Open Access)
  • Rizzi, Gianluca; Tallarico, Domenico; Neff, Patrizio; Madeo, Angela
    Towards the conception of complex engineering meta-structures : Relaxed-micromorphic modelling of low-frequency mechanical diodes/high-frequency screens
    In: Wave Motion , Jg. 113 2022 , 102920
    DOI, Online Volltext (Open Access)
  • Demore, F.; Rizzi, G.; Collet, M.; Neff, Patrizio; Madeo, A.
    Unfolding engineering metamaterials design : Relaxed micromorphic modeling of large-scale acoustic meta-structures
    In: Journal of the Mechanics and Physics of Solids , Jg. 168 2022 , 104995
    DOI, Online Volltext (Open Access)
  • Ghiba, Ionel-Dumitrel; Birsan, Mircea; Lewintan, Peter; Neff, Patrizio
    A Constrained Cosserat Shell Model up to Order O(h⁵) : Modelling, Existence of Minimizers, Relations to Classical Shell Models and Scaling Invariance of the Bending Tensor
    In: Journal of Elasticity , Jg. 146 2021 , Nr. 1 , S. 83 - 141
    DOI, Online Volltext (Open Access)
  • Sky, Adam; Neunteufel, Michael; Münch, Ingo; Schöberl, Joachim; Neff, Patrizio
    A hybrid H¹× H(curl) finite element formulation for a relaxed micromorphic continuum model of antiplane shear
    In: Computational Mechanics , Jg. 68 2021 , S. 1 - 24
    DOI (Open Access)
  • Owczarek, Sebastian; Ghiba, Ionel-Dumitrel; Neff, Patrizio
    A note on local higher regularity in the dynamic linear relaxed micromorphic model
    In: Mathematical Methods in the Applied Sciences , Jg. 44 2021 , Nr. 18 , S. 13855 - 13865
    DOI, Online Volltext (Open Access)
  • Rizzi, Gianluca; Hütter, Geralf; Madeo, Angela; Neff, Patrizio
    Analytical solutions of the cylindrical bending problem for the relaxed micromorphic continuum and other generalized continua
    In: Continuum Mechanics and Thermodynamics , Jg. 33 2021 , S. 1505 - 1539
    DOI, Online Volltext (Open Access)
  • Rizzi, Gianluca; Hütter, Geralf; Madeo, Angela; Neff, Patrizio
    Analytical solutions of the simple shear problem for micromorphic models and other generalized continua
    In: Archive of Applied Mechanics , Jg. 91 2021 , Nr. 5 , S. 2237 - 2254
    DOI
  • Ghiba, Ionel-Dumitrel; Neff, Patrizio; Owczarek, Sebastian
    Existence results for non-homogeneous boundary conditions in the relaxed micromorphic model
    In: Mathematical Methods in the Applied Sciences , Jg. 44 2021 , Nr. 2 , S. 2040 - 2049
    DOI, Online Volltext (Open Access)
  • Rizzi, Gianluca; Collet, Manuel; Demore, Félix; Eidel, Bernhard; Neff, Patrizio; Madeo, Angela
    Exploring Metamaterials’ Structures Through the Relaxed Micromorphic Model : Switching an Acoustic Screen Into an Acoustic Absorber
    In: Frontiers in Materials , Jg. 7 2021 , S. 589701
    DOI, Online Volltext (Open Access)
  • Lewintan, Peter; Müller, Stefan; Neff, Patrizio
    Korn inequalities for incompatible tensor fields in three space dimensions with conformally invariant dislocation energy
    In: Calculus of Variations and Partial Differential Equations , Jg. 60 2021 , Nr. 4 , 150
    DOI (Open Access)
  • Lewintan, Peter; Neff, Patrizio
    Lp -trace-free version of the generalized Korn inequality for incompatible tensor fields in arbitrary dimensions
    In: Zeitschrift für Angewandte Mathematik und Physik (ZAMP) , Jg. 72 2021 , Nr. 3 , 127
    DOI (Open Access)
  • Lewintan, Peter; Neff, Patrizio
    Lp-versions of generalized Korn inequalities for incompatible tensor fields in arbitrary dimensions with p-integrable exterior derivative
    In: Comptes Rendus Mathématique , Jg. 359 2021 , Nr. 2 , S. 749 - 755
    DOI (Open Access)
  • Lewintan, Peter; Neff, Patrizio
    Nečas–Lions lemma revisited : An Lp-version of the generalized Korn inequality for incompatible tensor fields
    In: Mathematical Methods in the Applied Sciences , Jg. 44 2021 , Nr. 14 , S. 11392 - 11403
    DOI (Open Access)
  • Mohammadi Saem, Maryam; Lewintan, Peter; Neff, Patrizio
    On in-plane drill rotations for Cosserat surfaces
    In: Proceedings of the Royal Society of London, Series A: Mathematical, Physical and Engineering Sciences , Jg. 477 2021 , Nr. 2252 , 20210158
    DOI, Online Volltext (Open Access)
  • Voss, Max Jendrik; Ghiba, Ionel-Dumitrel; Martin, Robert; Neff, Patrizio
    Sharp Rank-One Convexity Conditions in Planar Isotropic Elasticity for the Additive Volumetric-Isochoric Split
    In: Journal of Elasticity , Jg. 143 2021 , Nr. 2 , S. 301 - 335
    DOI (Open Access)
  • Ebobisse, François; Neff, Patrizio
    A fourth-order gauge-invariant gradient plasticity model for polycrystals based on Kröner’s incompatibility tensor
    In: Mathematics and Mechanics of Solids (MMS) , Jg. 25 2020 , Nr. 2 , S. 129 - 159
    DOI, Online Volltext (Open Access)
  • Schweickert, Eva; Mihai, L. Angela; Martin, Robert; Neff, Patrizio
    A note on non-homogeneous deformations with homogeneous Cauchy stress for a strictly rank-one convex energy in isotropic hyperelasticity
    In: International Journal of Non-Linear Mechanics , Jg. 119 2020 , S. 103282
    DOI, Online Volltext (Open Access)
  • Böhmer, Christian G.; Lee, Yongjo; Neff, Patrizio
    Chirality in the plane
    In: Journal of the Mechanics and Physics of Solids , Jg. 134 2020 , S. 103753
    DOI, Online Volltext (Open Access)
  • d’Agostino, Marco Valerio; Barbagallo, Gabriele; Ghiba, Ionel-Dumitrel; Eidel, Bernhard; Neff, Patrizio; Madeo, Angela
    Effective Description of Anisotropic Wave Dispersion in Mechanical Band-Gap Metamaterials via the Relaxed Micromorphic Model
    In: Journal of Elasticity , Jg. 139 2020 , Nr. 2 , S. 299 - 329
    DOI, Online Volltext (Open Access)
  • Aivaliotis, Alexios; Tallarico, Domenico; d’Agostino, Marco-Valerio; Daouadji, Ali; Neff, Patrizio; Madeo, Angela
    Frequency- and angle-dependent scattering of a finite-sized meta-structure via the relaxed micromorphic model
    In: Archive of Applied Mechanics , Jg. 90 2020 , Nr. 5 , S. 1073 - 1096
    DOI
  • Neff, Patrizio; Eidel, Bernhard; d’Agostino, Marco Valerio; Madeo, Angela
    Identification of Scale-Independent Material Parameters in the Relaxed Micromorphic Model Through Model-Adapted First Order Homogenization
    In: Journal of Elasticity , Jg. 139 2020 , Nr. 2 , S. 269 - 298
    DOI, Online Volltext (Open Access)
  • Voss, Max Jendrik; Baaser, Herbert; Martin, Robert; Neff, Patrizio
    More on Anti-plane Shear
    In: Journal of Optimization Theory and Applications (JOTA) , Jg. 184 2020 , S. 226 - 249
    DOI
  • Khurana, Aarti; Bala, Suman; Khan, Hassam; Tomar, Sushil K.; Neff, Patrizio
    On the dispersion of waves for the linear thermoelastic relaxed micromorphic model
    In: Journal of Thermal Stresses , Jg. 43 2020 , Nr. 1 , S. 3 - 20
    DOI, Online Volltext (Open Access)
  • Martin, Robert; Voss, Max Jendrik; Neff, Patrizio; Ghiba, Ionel-Dumitrel
    Quasiconvex relaxation of isotropic functions in incompressible planar hyperelasticity
    In: Proceedings of the Royal Society of Edinburgh: Section A: Mathematics , Jg. 150 2020 , Nr. 5 , S. 2620 - 2631
    DOI (Open Access)
  • Ghiba, Ionel-Dumitrel; Birsan, Mircea; Lewintan, Peter; Neff, Patrizio
    The Isotropic Cosserat Shell Model Including Terms up to O(h⁵) : Part II: Existence of Minimizers
    In: Journal of Elasticity , Jg. 142 2020 , Nr. 2 , S. 263 - 290
    DOI, Online Volltext (Open Access)
  • Ghiba, Ionel-Dumitrel; Birsan, Mircea; Lewintan, Peter; Neff, Patrizio
    The Isotropic Cosserat Shell Model Including Terms up to O(h⁵). : Part I: Derivation in Matrix Notation
    In: Journal of Elasticity , Jg. 142 2020 , Nr. 2 , S. 201 - 262
    DOI, Online Volltext (Open Access)
  • Shirani, Milad; Steigmann, David J.; Neff, Patrizio
    The Legendre–Hadamard condition in Cosserat elasticity theory
    In: The Quarterly Journal of Mechanics and Applied Mathematics , Jg. 73 2020 , Nr. 4 , S. 293 - 303
    DOI, Online Volltext (Open Access)
  • Martin, Robert; Voss, Max Jendrik; Ghiba, Ionel-Dumitrel; Sander, Oliver; Neff, Patrizio
    The Quasiconvex Envelope of Conformally Invariant Planar Energy Functions in Isotropic Hyperelasticity
    In: Journal of Nonlinear Science , Jg. 30 2020 , Nr. 6 , S. 2885 - 2923
    DOI (Open Access)
  • Neff, Patrizio; Graban, Kai; Schweickert, Eva; Martin, Robert
    The axiomatic introduction of arbitrary strain tensors by Hans Richter – a commented translation of ‘Strain tensor, strain deviator and stress tensor for finite deformations’
    In: Mathematics and Mechanics of Solids (MMS) , Jg. 25 2020 , Nr. 5 , S. 1060 - 1080
    DOI, Online Volltext (Open Access)
  • Ebobisse, François; Hackl, Klaus; Neff, Patrizio
    A canonical rate-independent model of geometrically linear isotropic gradient plasticity with isotropic hardening and plastic spin accounting for the Burgers vector
    In: Continuum Mechanics and Thermodynamics , Jg. 31 2019 , S. 1477 - 1502
    DOI, Online Volltext (Open Access)
  • Graban, Kai; Schweickert, Eva; Martin, Robert; Neff, Patrizio
    A commented translation of Hans Richter’s early work “The isotropic law of elasticity”
    In: Mathematics and Mechanics of Solids (MMS) , Jg. 24 2019 , Nr. 8 , S. 2649 - 2660
    DOI, Online Volltext (Open Access)
  • Martin, Robert; Ghiba, Ionel-Dumitrel; Neff, Patrizio
    A polyconvex extension of the logarithmic Hencky strain energy
    In: Analysis and Applications , Jg. 17 2019 , Nr. 3 , S. 349 - 361
    DOI, Online Volltext (Open Access)
  • Thiel, Christian; Voss, Max Jendrik; Martin, Robert; Neff, Patrizio
    Do we need Truesdell's empirical inequalities? : On the coaxiality of stress and stretch
    In: International Journal of Non-Linear Mechanics , Jg. 112 2019 , S. 106 - 116
    DOI, Online Volltext (Open Access)
  • Neff, Patrizio; Fischle, Andreas; Borisov, Lev
    Explicit Global Minimization of the Symmetrized Euclidean Distance by a Characterization of Real Matrices with Symmetric Square
    In: SIAM Journal on Applied Algebra and Geometry , Jg. 3 2019 , Nr. 1 , S. 31 - 43
    DOI
  • Aivaliotis, Alexios; Daouadji, Ali; Barbagallo, Gabriele; Tallarico, Domenico; Neff, Patrizio; Madeo, Angela
    Microstructure-related Stoneley waves and their effect on the scattering properties of a 2D Cauchy/relaxed-micromorphic interface
    In: Wave Motion , Jg. 90 2019 , S. 99 - 120
    DOI (Open Access)
  • Owczarek, Sebastian; Ghiba, Ionel-Dumitrel; d’Agostino, Marco-Valerio; Neff, Patrizio
    Nonstandard micro-inertia terms in the relaxed micromorphic model: well-posedness for dynamics
    In: Mathematics and Mechanics of Solids (MMS) 2019
    DOI, Online Volltext (Open Access)
  • Borisov, Lev; Fischle, Andreas; Neff, Patrizio
    Optimality of the relaxed polar factors by a characterization of the set of real square roots of real symmetric matrices
    In: ZAMM: Zeitschrift für Angewandte Mathematik und Mechanik , Jg. 99 2019 , Nr. 6 , S. e201800120
    DOI, Online Volltext (Open Access)
  • Birsan, Mircea; Ghiba, Ionel-Dumitrel; Martin, Robert; Neff, Patrizio
    Refined dimensional reduction for isotropic elastic Cosserat shells with initial curvature
    In: Mathematics and Mechanics of Solids (MMS) , Jg. 24 2019 , Nr. 12 , S. 4000 - 4019
    DOI, Online Volltext (Open Access)
  • Barbagallo, Gabriele; Tallarico, Domenico; D'Agostino, Marco Valerio; Aivaliotis, Alexios; Neff, Patrizio; Madeo, Angela
    Relaxed micromorphic model of transient wave propagation in anisotropic band-gap metastructures
    In: International Journal of Solids and Structures , Jg. 162 2019 , S. 148 - 163
    DOI, Online Volltext (Open Access)
  • Thiel, Christian; Voss, Max Jendrik; Martin, Robert; Neff, Patrizio
    Shear, pure and simple
    In: International Journal of Non-Linear Mechanics 2019
    DOI, Online Volltext (Open Access)
  • Böhmer, Christian G.; Lee, Yongjo; Neff, Patrizio
    Soliton solutions in geometrically nonlinear Cosserat micropolar elasticity with large deformations
    In: Wave Motion , Jg. 84 2019 , S. 110 - 124
    DOI (Open Access)
  • Nedjar, Boumediene; Baaser, Herbert; Martin, Robert J.; Neff, Patrizio
    A finite element implementation of the isotropic exponentiated Hencky-logarithmic model and simulation of the eversion of elastic tubes
    In: Computational Mechanics , Jg. 62 2018 , Nr. 4 , S. 635 - 654
    DOI, Online Volltext (Open Access)
  • Martin, Robert J.; Ghiba, Ionel-Dumitrel; Neff, Patrizio
    A non-ellipticity result, or the impossible taming of the logarithmic strain measure
    In: International Journal of Non-Linear Mechanics , Jg. 102 2018 , S. 147 - 158
    DOI, Online Volltext (Open Access)
  • Ebobisse, François; Neff, Patrizio; Aifantis, Elias C.
    Existence result for a dislocation based model of single crystal gradient plasticity with isotropic or linear kinematic hardening
    In: The Quarterly Journal of Mechanics and Applied Mathematics , Jg. 71 2018 , Nr. 1 , S. 99 - 124
    DOI, Online Volltext (Open Access)
  • Mihai, L Angela; Neff, Patrizio
    Hyperelastic bodies under homogeneous Cauchy stress induced by three-dimensional non-homogeneous deformations
    In: Mathematics and Mechanics of Solids (MMS) , Jg. 23 2018 , Nr. 4 , S. 606 - 616
    DOI, Online Volltext (Open Access)
  • Madeo, Angela; Collet, Manuel; Miniaci, Marco; Billon, Kévin; Ouisse, Morvan; Neff, Patrizio
    Modeling phononic crystals via theweighted relaxed micromorphic model with free and gradient micro-inertia
    In: Journal of Elasticity , Jg. 130 2018 , Nr. 1 , S. 59 - 83
    DOI (Open Access)
  • Ghiba, Ionel-Dumitrel; Martin, Robert; Neff, Patrizio
    Rank-one convexity implies polyconvexity in isotropic planar incompressible elasticity
    In: Journal de Mathématiques Pures et Appliquées , Jg. 116 2018 , S. 88 - 104
    DOI, Online Volltext (Open Access)
  • Madeo, Angela; Barbagallo, Gabriele; Collet, Manuel; d’Agostino, Marco Valerio; Miniaci, Marco; Neff, Patrizio
    Relaxed micromorphic modeling of the interface between a homogeneous solid and a band-gap metamaterial : new perspectives towards metastructural design
    In: Mathematics and Mechanics of Solids (MMS) , Jg. 23 2018 , Nr. 12 , S. 1485 - 1506
    DOI, Online Volltext (Open Access)
  • Münch, Ingo; Neff, Patrizio
    Rotational invariance conditions in elasticity, gradient elasticity and its connection to isotropy
    In: Mathematics and Mechanics of Solids (MMS) , Jg. 23 2018 , Nr. 1 , S. 3 - 42
    DOI, Online Volltext (Open Access)
  • Schröder, Jörg; von Hoegen, Markus; Neff, Patrizio
    The exponentiated Hencky energy : anisotropic extension and case studies
    In: Computational Mechanics , Jg. 61 2018 , Nr. 6 , S. 657 - 685
    DOI, Online Volltext (Open Access)
  • Ebobisse, François; Neff, Patrizio; Forest, Samuel
    Well-posedness for the microcurl model in both single and polycrystal gradient plasticity
    In: International Journal of Plasticity , Jg. 107 2018 , S. 1 - 26
    DOI, Online Volltext (Open Access)
  • d'Agostino, Marco Valerio; Barbagallo, Gabriele; Ghiba, Ionel-Dumitrel; Madeo, Angela; Neff, Patrizio
    A panorama of dispersion curves for the weighted isotropic relaxed micromorphic model
    In: ZAMM: Zeitschrift für Angewandte Mathematik und Mechanik , Jg. 97 2017 , Nr. 11 , S. 1436 - 1481
    DOI, Online Volltext (Open Access)
  • Neff, Patrizio; Ghiba, Dumitrel; Münch, Ingo; Madeo, Angela
    A variant of the linear isotropic indeterminate couple-stress model with symmetric local force-stress, symmetric nonlocal force-stress, symmetric couple-stresses and orthogonal boundary conditions
    In: Mathematics and Mechanics of Solids (MMS) , Jg. 22 2017 , Nr. 6 , S. 1221 - 1266
    DOI
  • Fischle, Andreas; Neff, Patrizio
    Continuum Mechanics : Grioli's theorem with weights and the relaxed-polar mechanism of optimal Cosserat rotations
    In: Rendiconti Lincei: Matematica e Applicazioni , Jg. 28 2017 , Nr. 3 , S. 573 - 600
    DOI, Online Volltext (Open Access)
  • Bahamonde, Sebastian; Böhmer, Christian G.; Neff, Patrizio
    Geometrically nonlinear cosserat elasticity in the plane : Applications to chirality
    In: Journal of Mechanics of Materials and Structures (JoMMS) , Jg. 12 2017 , Nr. 5 , S. 689 - 710
    DOI, Online Volltext (Open Access)
  • Neff, Patrizio; Mihai, L. Angela
    Hyperelastic bodies under homogeneous Cauchy stress induced by non-homogeneous finite deformations
    In: International Journal of Non-Linear Mechanics , Jg. 89 2017 , S. 93 - 100
    DOI (Open Access)
  • Neff, Patrizio; Mihai, L. Angela
    Injectivity of the Cauchy-stress tensor along rank-one connected lines under strict rank-one convexity condition
    In: Journal of Elasticity , Jg. 127 2017 , Nr. 2 , S. 309 - 315
    DOI, Online Volltext (Open Access)
  • Lankeit, Johannes; Neff, Patrizio; Osterbrink, Frank
    Integrability conditions between the first and second Cosserat deformation tensor in geometrically nonlinear micropolar models and existence of minimizers
    In: Zeitschrift für Angewandte Mathematik und Physik (ZAMP) , Jg. 68 2017 , S. 11
    DOI, Online Volltext (Open Access)
  • Neff, Patrizio; Thiel, Christian; Gao, David Yang; Roventa, Ionel
    On the Convexity of Nonlinear Elastic Energies in the Right Cauchy-Green Tensor
    In: Journal of Elasticity , Jg. 127 2017 , Nr. 2 , S. 303 - 308
    DOI
  • Madeo, Angela; Neff, Patrizio; Aifantis, Elias C.; Barbagallo, Gabriele; D'Agostino, Marco Valerio
    On the role of micro-inertia in enriched continuum mechanics
    In: Proceedings of the Royal Society of London, Series A: Mathematical, Physical and Engineering Sciences , Jg. 473 2017 , Nr. 2198 , S. 20160722
    DOI (Open Access)
  • Martin, Robert; Ghiba, Ionel-Dumitrel; Neff, Patrizio
    Rank-one convexity implies polyconvexity for isotropic, objective and isochoric elastic energies in the two-dimensional case
    In: Proceedings of the Royal Society of Edinburgh: Section A: Mathematics , Jg. 147 2017 , Nr. 3 , S. 571 - 597
    DOI, Online Volltext (Open Access)
  • Neff, Patrizio; Ghiba, Dumitrel; Barbagallo, Gabriele; Madeo, Angela; d'Agostino, Marco Valerio; Abreu, Rafael
    Real wave propagation in the isotropic relaxed micromorphic model
    In: Proceedings of the Royal Society of London, Series A: Mathematical, Physical and Engineering Sciences , Jg. 473 2017 , Nr. 2197 , S. 20160790
    DOI (Open Access)
  • Fischle, Andreas; Neff, Patrizio
    The geometrically nonlinear Cosserat micropolar shear–stretch energy : Part II: Non-classical energy-minimizing microrotations in 3D and their computational validation
    In: ZAMM: Zeitschrift für Angewandte Mathematik und Mechanik , Jg. 97 2017 , Nr. 7 , S. 843 - 871
    DOI, Online Volltext (Open Access)
  • Fischle, Andreas; Neff, Patrizio
    The geometrically nonlinear Cosserat micropolar shear–stretch energy : Part I: A general parameter reduction formula and energy-minimizing microrotations in 2D
    In: ZAMM: Zeitschrift für Angewandte Mathematik und Mechanik , Jg. 97 2017 , Nr. 7 , S. 828 - 842
    DOI, Online Volltext (Open Access)
  • Münch, Ingo; Neff, Patrizio; Madeo, Angela; Ghiba, Ionel-Dumitrel
    The modified indeterminate couple stress model : why Yang et al.'s arguments motivating a symmetric couple stress tensor contain a gap and why the couple stress tensor may be chosen symmetric nevertheless
    In: ZAMM: Zeitschrift für Angewandte Mathematik und Mechanik , Jg. 97 2017 , Nr. 12 , S. 1524 - 1554
    DOI, Online Volltext (Open Access)
  • Fischle, Andreas; Neff, Patrizio; Raabe, Dierk
    The relaxed-polar mechanism of locally optimal Cosserat rotations for an idealized nanoindentation and comparison with 3D-EBSD experiments
    In: Zeitschrift für Angewandte Mathematik und Physik (ZAMP) , Jg. 68 2017 , Nr. 4 , S. 90
    DOI, Online Volltext (Open Access)
  • Borisov, Lev; Neff, Patrizio; Sra, Suvrit; Thiel, Christian
    The sum of squared logarithms inequality in arbitrary dimensions
    In: Linear Algebra and Its Applications , Jg. 528 2017 , S. 124 - 146
    DOI, Online Volltext (Open Access)
  • Barbagallo, Gabriele; Madeo, Angela; d'Agostino, Marco Valerio; Abreu, Rafael; Ghiba, Ionel-Dumitrel; Neff, Patrizio
    Transparent anisotropy for the relaxed micromorphic model : macroscopic consistency conditions and long wave length asymptotics
    In: International Journal of Solids and Structures , Jg. 120 2017 , S. 7 - 30
    DOI, Online Volltext (Open Access)
  • Neff, Patrizio; Ghiba, Dumitrel; Münch, Ingo; Madeo, Angela
    A new view on boundary conditions in the Grioli–Koiter–Mindlin–Toupin indeterminate couple stress model
    In: European Journal of Mechanics / A: Solids , Jg. 59 2016 , S. 294 - 322
    DOI, Online Volltext (Open Access)
  • Neff, Patrizio; Madeo, Angela; d'Agostino, Marco Valerio; Barbagallo, Gabriele
    Complete band gaps including non-local effects occur only in the relaxed micromorphic model
    In: Comptes Rendus Mecanique , Jg. 344 2016 , Nr. 11-12 , S. 784 - 796
    DOI (Open Access)
  • Bauer, Sebastian; Neff, Patrizio; Pauly, Dirk; Starke, Gerhard
    Dev-Div- and DevSym-DevCurl-inequalities for incompatible square tensor fields with mixed boundary conditions
    In: Control, Optimisation and Calculus of Variations (ESAIM-COCV) , Jg. 22 2016 , Nr. 1 , S. 112 - 133
    DOI
  • Neff, Patrizio; Madeo, Angela; Barbagallo, Gabriele; d'Agostino, Marco Valerio; Placidi, Luca
    First evidence of non-locality in real band-gap metamaterials : determining parameters in the relaxed micromorphic model
    In: Proceedings of the Royal Society of London, Series A: Mathematical, Physical and Engineering Sciences , Jg. 472 2016 , Nr. 2190
    DOI
  • Neff, Patrizio; Eidel, Bernhard; Martin, Robert
    Geometry of Logarithmic Strain Measures in Solid Mechanics
    In: Archive for Rational Mechanics and Analysis , Jg. 222 2016 , Nr. 2 , S. 507 - 572
    DOI (Open Access)
  • Neff, Patrizio; Ghiba, Dumitrel
    Loss of ellipticity for non-coaxial plastic deformations in additive logarithmic finite strain plasticity
    In: International Journal of Non-Linear Mechanics , Jg. 81 2016 , S. 122 - 128
    DOI, Online Volltext (Open Access)
  • Neff, Patrizio; Martin, Robert; Ghiba, Ionel-Dumitrel
    Loss of ellipticity in additive logarithmic finite strain plasticity and related results on Hencky-type energies
    Joint 87th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM) and Deutsche Mathematiker‐Vereinigung (DMV), 7 – 11 March 2016, Braunschweig,
    In: Proceedings in Applied Mathematics and Mechanics (PAMM) , Jg. 16 2016 , Nr. 1 , S. 341 - 342
    DOI
  • Neff, Patrizio; Martin, Robert
    Minimal geodesics on GL(n) for left-invariant, right-O(n)-invariant Riemannian metrics
    In: The Journal of Geometric Mechanics , Jg. 8 2016 , Nr. 3 , S. 323 - 357
    DOI, Online Volltext (Open Access)
  • Sander, Oliver; Neff, Patrizio; Birsan, Mircea
    Numerical treatment of a geometrically nonlinear planar Cosserat shell model
    In: Computational Mechanics , Jg. 57 2016 , Nr. 5 , S. 817 - 841
    DOI, Online Volltext (Open Access)
  • Neff, Patrizio; Münch, Ingo; Ghiba, Dumitrel; Madeo, Angela
    On some fundamental misunderstandings in the indeterminate couple stress model : A comment on recent papers of A.R. Hadjesfandiari and G.F. Dargush
    In: International Journal of Solids and Structures , Jg. 81 2016 , S. 233 - 243
    DOI
  • Neff, Patrizio; Dannan, Fozi M.; Thiel, Christian
    On the sum of squared logarithms inequality and related inequalities
    In: Journal of Mathematical Inequalities , Jg. 10 2016 , Nr. 1 , S. 1 - 17
    DOI, Online Volltext (Open Access)
  • Neff, Patrizio; Münch, Ingo; Martin, Robert
    Rediscovering G.F. Becker's early axiomatic deduction of a multiaxial nonlinear stress-strain relation based on logarithmic strain
    In: Mathematics and Mechanics of Solids (MMS) , Jg. 21 2016 , Nr. 7 , S. 856 - 911
    DOI, Online Volltext (Open Access)
  • Neff, Patrizio; Ghiba, Dumitrel; Madeo, Angela; Rosi, Giuseppe
    Reflection and transmission of elastic waves in non-local band-gap metamaterials : A comprehensive study via the relaxed micromorphic model
    In: Journal of the Mechanics and Physics of Solids , Jg. 95 2016 , S. 441 - 479
    DOI, Online Volltext (Open Access)
  • Neff, Patrizio; Seymenoğlu, Belgin; Böhmer, Christian Gerhard
    Soliton-like solutions based on geometrically nonlinear Cosserat micropolar elasticity
    In: Wave Motion , Jg. 60 2016 , S. 158 - 165
    DOI, Online Volltext (Open Access)
  • Montella, Giuseppe; Govindjee, Sanjay; Neff, Patrizio
    The Exponentiated Hencky Strain Energy in Modeling Tire Derived Material for Moderately Large Deformations
    In: Journal of Engineering Materials and Technology , Jg. 138 2016 , Nr. 3
    DOI (Open Access)
  • Neff, Patrizio; Ghiba, Dumitrel
    The exponentiated Hencky-Logarithmic strain energy : Part III: Coupling with idealized isotropic finite strain plasticity
    In: Continuum Mechanics and Thermodynamics , Jg. 28 2016 , Nr. 1 , S. 477 - 487
    DOI, Online Volltext (Open Access)
  • Chełmiński, Krzysztof; Neff, Patrizio; Owczarek, Sebastian
    A first regularity result for the Armstrong-Frederick cyclic hardening plasticity model with Cosserat effects
    In: Journal of Mathematical Analysis and Applications , Jg. 423 2015 , Nr. 1 , S. 283 - 304
    DOI, Online Volltext (Open Access)
  • Ghiba, Ionel Dumitrel; Neff, Patrizio; Martin, Robert
    An ellipticity domain for the distortional Hencky logarithmic strain energy
    In: Proceedings of the Royal Society of London, Series A: Mathematical, Physical and Engineering Sciences , Jg. 471 2015 , Nr. 2184 , S. 20150510
    DOI
  • Madeo, Angela; Neff, Patrizio; Ghiba, Dumitrel; Placidi, Luca; Rosi, Giuseppe
    Band gaps in the relaxed linear micromorphic continuum
    In: ZAMM: Zeitschrift für Angewandte Mathematik und Mechanik , Jg. 95 2015 , Nr. 9 , S. 880 - 887
    DOI (Open Access)
  • Neff, Patrizio; Bîrsan, Mircea; Osterbrink, Frank
    Existence theorem for geometrically nonlinear cosserat micropolar model under uniform convexity requirements
    In: Journal of Elasticity , Jg. 121 2015 , Nr. 1 , S. 119 - 141
    DOI, Online Volltext (Open Access)
  • Pompe, Waldemar; Neff, Patrizio
    On the generalised sum of squared logarithms inequality
    In: Journal of Inequalities and Applications , Jg. 2015 2015 , S. 101
    DOI (Open Access)
  • Neff, Patrizio; Pauly, Dirk; Witsch, Karl-Josef
    Poincaré meets Korn via Maxwell : extending Korn's first inequality to incompatible tensor fields
    In: Journal of Differential Equations , Jg. 258 2015 , Nr. 4 , S. 1267 - 1302
    DOI, Online Volltext (Open Access)
  • Martin, Robert J.; Neff, Patrizio
    Some remarks on the monotonicity of primary matrix functions on the set of symmetric matrices
    In: Archive of Applied Mechanics , Jg. 85 2015 , Nr. 12 , S. 1761 - 1778
    DOI, Online Volltext (Open Access)
  • Neff, Patrizio; Lankeit, Johannes; Ghiba, Dumitrel; Martin, Robert; Steigmann, David
    The exponentiated Hencky-Logarithmic strain energy : Part II: Coercivity, planar polyconvexity and existence of minimizers
    In: Zeitschrift für Angewandte Mathematik und Physik (ZAMP) , Jg. 66 2015 , Nr. 4 , S. 1671 - 1693
    DOI, Online Volltext (Open Access)
  • Neff, Patrizio; Ghiba, Dumitrel; Lankeit, Johannes
    The exponentiated Hencky-Logarithmic strain energy : Part I: Constitutive issues and rank-one convexity
    In: Journal of Elasticity , Jg. 121 2015 , Nr. 2 , S. 143 - 234
    DOI, Online Volltext (Open Access)
  • Ghiba, Dumitrel; Neff, Patrizio; Šilhavý, Miroslav
    The exponentiated Hencky-Logarithmic strain energy : Improvement of planar polyconvexity
    In: International Journal of Non-Linear Mechanics , Jg. 71 2015 , S. 48 - 51
    DOI, Online Volltext (Open Access)
  • Neff, Patrizio; Lazar, Markus; Ghiba, Dumitrel; Madeo, Angela
    The relaxed linear micromorphic continuum : well-posedness of the static problem and relations to the gauge theory of dislocations
    In: The Quarterly Journal of Mechanics and Applied Mathematics , Jg. 68 2015 , Nr. 1 , S. 53 - 84
    DOI
  • Neff, Patrizio; Ghiba, Dumitrel; Madeo, Angela; Placidi, Luca; Rosi, Giuseppe
    The relaxed linear micromorphic continuum : Existence, uniqueness and continuous dependence in dynamics
    In: Mathematics and Mechanics of Solids (MMS) , Jg. 20 2015 , Nr. 10 , S. 1171 - 1197
    DOI, Online Volltext (Open Access)
  • Madeoa, Angela; Corte, Allesandro D.; Greco, Leopoldo; Neff, Patrizio
    Wave propagation in pantographic 2D lattices with internal discontinuities
    In: Proceedings of the Estonian Academy of Sciences , Jg. 64 2015 , Nr. 3 , S. 325 - 330
    DOI (Open Access)
  • Madeo, Angela; Neff, Patrizio; Ghiba, Dumitrel; Placidi, Luca; Rosi, Giuseppe
    Wave propagation in relaxed micromorphic continua : modeling metamaterials with frequency band-gaps
    In: Continuum Mechanics and Thermodynamics , Jg. 27 2015 , Nr. 4-5 , S. 551 - 570
    DOI, Online Volltext (Open Access)
  • Kraynyukova, Nataliya; Nesenenko, Sergeiy; Neff, Patrizio; Chełmiński, Krzysztof
    Well-posedness for dislocation based gradient visco-plasticity with isotropic hardening
    In: Nonlinear Analysis: Real World Applications , Jg. 25 2015 , S. 96 - 111
    DOI, Online Volltext (Open Access)
  • Neff, Patrizio; Eidel, Bernhard; Osterbrink, Frank; Martin, Robert
    A Riemannian approach to strain measures in nonlinear elasticity
    In: Comptes Rendus Mecanique , Jg. 342 2014 , Nr. 4 , S. 254 - 257
    DOI
  • Neff, Patrizio; Nakatsukasa, Yuji; Fischle, Andreas
    A logarithmic minimization property of the unitary polar factor in the spectral norm and the Frobenius norm
    In: SIAM Journal on Matrix Analysis and Applications , Jg. 35 2014 , Nr. 3 , S. 1132 - 1154
    DOI
  • Neff, Patrizio; Ghiba, Dumitrel; Placidi, Luca; Madeo, Angela; Rosi, Giuseppe
    A unifying perspective : the relaxed linear micromorphic continuum
    In: Continuum Mechanics and Thermodynamics , Jg. 26 2014 , Nr. 5 , S. 639 - 681
    DOI
  • Neff, Patrizio; Pompe, Waldemar
    Counterexamples in the theory of coerciveness for linear elliptic systems related to generalizations of Korn's second inequality
    In: ZAMM: Zeitschrift für Angewandte Mathematik und Mechanik , Jg. 94 2014 , Nr. 9 , S. 784 - 790
    DOI, Online Volltext (Open Access)
  • Neff, Patrizio; Pauly, Dirk
    Eine Fusion in der Mathematik : Über das Verschmelzen zweier Kerngebiete der Angewandten Mathematik
    In: Unikate: Berichte aus Forschung und Lehre 2014 , Nr. 45: Fusionen – Was sagen die Fakultäten? , S. 28 - 37
    DOI, Online Volltext (Open Access)
  • Birsan, Mircea; Neff, Patrizio
    Existence of minimizers in the geometrically non-linear 6-parameter resultant shell theory with drilling rotations
    In: Mathematics and Mechanics of Solids (MMS) , Jg. 19 2014 , Nr. 4 , S. 376 - 397
    DOI, Online Volltext (Open Access)
  • Bauer, Sebastian; Neff, Patrizio; Pauly, Dirk; Starke, Gerhard
    New Poincaré-type inequalities
    In: Comptes Rendus Mathématique , Jg. 352 2014 , Nr. 2 , S. 163 - 166
    DOI
  • Neff, Patrizio; Lankeit, Johannes; Madeo, Angela
    On Grioli's minimum property and its relation to Cauchy's polar decomposition
    In: International Journal of Engineering Science , Jg. 80 2014 , S. 209 - 217
    DOI
  • Lehmich, Stephan; Neff, Patrizio; Lankeit, Johannes
    On the convexity of the function C → f(det C) on positive-definite matrices
    In: Mathematics and Mechanics of Solids (MMS) , Jg. 19 2014 , Nr. 4 , S. 369 - 375
    DOI, Online Volltext
  • Neff, Patrizio; Ghiba, Dumitrel; Lankeit, Johannes; Martin, Robert
    Rank-one convexity and polyconvexity of Hencky-type energies
    In: Proceedings in Applied Mathematics and Mechanics (PAMM) , Jg. 14 2014 , Nr. 1, Special Issue: 85th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM), Erlangen 2014 , S. 735 - 736
    DOI
  • Birsan, Mircea; Neff, Patrizio
    Shells without drilling rotations: A representation theorem in the framework of the geometrically nonlinear 6-parameter resultant shell theory
    In: International Journal of Engineering Science , Jg. 80 2014 , S. 32 - 42
    DOI
  • Neff, Patrizio; Chełmiński, Krzysztof; Owczarek, Sebastian
    The Armstrong–Frederick cyclic hardening plasticity model with Cosserat effects
    In: Journal of Differential Equations , Jg. 256 2014 , Nr. 11 , S. 3497 - 3523
    DOI
  • Neff, Patrizio; Lankeit, Johannes; Nakatsukasa, Yuji
    The minimization of matrix logarithms : on a fundamental property of the unitary polar factor
    In: Linear Algebra and Its Applications , Jg. 449 2014 , S. 28 - 42
    DOI
  • Neff, Patrizio; Ghiba, Dumitrel; Madeo, Angela
    The relaxed micromorphic continuum model
    In: Proceedings in Applied Mathematics and Mechanics (PAMM) , Jg. 14 2014 , Nr. 1, Special Issue: 85th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM), Erlangen 2014 , S. 733 - 734
    DOI
  • Birsan, Mircea; Neff, Patrizio
    Existence theorems in the geometrically non-linear 6-parameter theory of elastic plates
    In: Journal of Elasticity , Jg. 112 2013 , Nr. 2 , S. 185 - 198
    DOI
  • Neff, Patrizio; Bauer, Sebastian; Pauly, Dirk; Starke, Gerhard
    Some Poincaré type inequalities for quadratic matrix fields
    84th Annual Meeting of the Gesellschaft für Angewandte Mathematik und Mechanik,18 – 22 March 2013, Novi Sad, Serbia,
    In: Proceedings in Applied Mathematics and Mechanics (PAMM) , Jg. 13 2013 , Nr. 1, 84th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM), Novi Sad 2013 , S. 359 - 360
    DOI
  • Birsan, Mircea; Neff, Patrizio; Lankeit, Johannes
    Sum of squared logarithms : an inequality relating positive definite matrices and their matrix logarithm
    In: Journal of Inequalities and Applications , Jg. 2013 2013 , S. 168
    DOI (Open Access)
  • Neff, Patrizio; Chełmiński, Krzysztof; Owczarek, Sebastian
    The Armstrong-Frederick Plasticity model with Cosserat effects
    In: Proceedings in Applied Mathematics and Mechanics (PAMM) , Jg. 13 2013 , Nr. 1, 84th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM), Novi Sad 2013 , S. 357 - 358
    DOI
  • Neff, Patrizio; Eidel, Bernhard; Osterbrink, Frank; Martin, Robert
    The Hencky strain energy ‖log U‖2 measures the geodesic distance of the deformation gradient to SO(n) in the canonical left-invariant Riemannian metric on GL(n)
    In: Proceedings in Applied Mathematics and Mechanics (PAMM) , Jg. 13 2013 , Nr. 1, Special Issue: 84th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM), Novi Sad 2013 , S. 369 - 370
    DOI
  • Neff, Patrizio; Lankeit, Johannes; Pauly, Dirk
    Uniqueness of integrable solutions to ∇ζ = Gζ, ζ|Γ = 0 for integrable tensor coefficients G and applications to elasticity
    In: Proceedings in Applied Mathematics and Mechanics (PAMM) , Jg. 13 2013 , Nr. 1, 84th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM), Novi Sad 2013 , S. 361 - 362
    DOI
  • Neff, Patrizio; Lankeit, Johannes; Pauly, Dirk
    Uniqueness of integrable solutions to ∇ζ=Gζ,ζ|Γ=0 for integrable tensor coefficients G and applications to elasticity
    In: Zeitschrift für Angewandte Mathematik und Physik (ZAMP) , Jg. 64 2013 , Nr. 6 , S. 1679 - 1688
    DOI
  • Neff, Patrizio; Nesenenko, Sergiy
    Well-posedness for dislocation based gradient viscoplasticity II : General nonassociative monotone plastic flows
    In: Mathematics and Mechanics of Complex Systems , Jg. 1 2013 , Nr. 2 , S. 149 - 176
    DOI (Open Access)
  • Neff, Patrizio; Witsch, Karl-Josef; Pauly, Dirk
    Maxwell meets Korn : a new coercive inequality for tensor fields in in R N×N with square-integrable exterior derivative
    In: Mathematical Methods in the Applied Sciences , Jg. 35 2012 , Nr. 1 , S. 65 - 71
    DOI
  • Neff, Patrizio; Pauly, Dirk; Witsch, Karl-Josef
    On a canonical extension of Korn's first and Poincaré's inequalities to H(CURL)
    In: Journal of Mathematical Sciences , Jg. 185 2012 , Nr. 5 , S. 721 - 727
    DOI
  • Birsan, Mircea; Neff, Patrizio
    On the equations of geometrically nonlinear elastic plates with rotational degrees of freedom
    In: Annals of the Academy of Romanian Scientists: Series on Mathematics and its Applications , Jg. 4 2012 , Nr. 1 , S. 97 - 103
  • Neff, Patrizio; Chełmiński, Krzysztof; Owczarek, Sebastian
    Poroplasticity with Cosserat effects
    In: ZAMM: Zeitschrift für Angewandte Mathematik und Mechanik , Jg. 92 2012 , Nr. 6 , S. 462 - 478
    DOI
  • Nesenenko, Sergiy; Neff, Patrizio
    Well-Posedness for dislocation based gradient viscoplasticity I : Subdifferential case
    In: SIAM Journal on Mathematical Analysis , Jg. 44 2012 , Nr. 3 , S. 1694 - 1712
    DOI
  • Neff, Patrizio; Witsch, Karl-Josef; Pauly, Dirk
    A Korn's inequality for incompatible tensor fields
    In: Proceedings in Applied Mathematics and Mechanics (PAMM) , Jg. 11 2011 , Nr. 1, Special Issue: 82nd Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM), Graz 2011 , S. 683 - 684
    DOI
  • Neff, Patrizio; Pauly, Dirk; Witsch, Karl-Josef
    A canonical extension of Korn's first inequality to H(Curl) motivated by gradient plasticity with plastic spin
    In: Comptes Rendus Mathématique , Jg. 349 2011 , Nr. 23-24 , S. 1251 - 1254
    DOI
  • Neff, Patrizio; Chełmiński, Krzysztof; Müller, Wolfgang; Wieners, Christian
    A solution method for an infinitesimal elastoplastic Cosserat model
    In: Mathematical Models and Methods in Applied Sciences , Jg. 17 2011 , Nr. 8 , S. 1211 - 1229
    DOI
  • Neff, Patrizio; Beyrouthy, Joelle
    A viscoelastic thin rod model for large deformations : Numerical examples
    In: Mathematics and Mechanics of Solids (MMS) , Jg. 16 2011 , Nr. 8 , S. 887 - 896
    DOI
  • Klawonn, Axel; Neff, Patrizio; Rheinbach, Oliver; Vanis, Stefanie
    FETI-DP domain decomposition methods for elasticity with structural changes: P-elasticity
    In: Mathematical Modelling and Numerical Analysis (ESAIM-M2AN) , Jg. 45 2011 , Nr. 3 , S. 563 - 602
    DOI
  • Neff, Patrizio; Münch, Ingo; Wagner, Werner
    Transversely isotropic material: Nonlinear Cosserat versus classical approach
    In: Continuum Mechanics and Thermodynamics , Jg. 23 2011 , Nr. 1 , S. 27 - 34
    DOI
  • Neff, Patrizio; Ebobisse, Francois
    Existence and Uniqueness for Rate-Independent Infinitesimal Gradient Plasticity with Isotropic Hardening and Plastic Spin
    In: Mathematics and Mechanics of Solids (MMS) , Jg. 15 2010 , Nr. 6 , S. 691 - 703
    DOI
  • Neff, Patrizio; Jeong, Jena
    Existence, uniqueness and stability in linear Cosserat elasticity for weakest curvature conditions
    In: Mathematics and Mechanics of Solids (MMS) , Jg. 15 2010 , Nr. 1 , S. 78 - 95
    DOI
  • Neff, Patrizio; Müller, Wolfgang; Wieners, Christian
    Parallel simulation of an infinitesimal elasto-plastic Cosserat model
    In: GAMM-Mitteilungen , Jg. 33 2010 , Nr. 1 , S. 79 - 94
    DOI
  • Klawonn, Axel; Neff, Patrizio; Rheinbach, Oliver; Vanis, Stefanie
    Solving geometrically exact micromorphic elasticity with a staggered algorithm
    In: GAMM-Mitteilungen , Jg. 33 2010 , Nr. 1 , S. 57 - 72
    DOI
  • Neff, Patrizio; Fischle, Andreas; Jeong, Jena
    Stable identification of linear isotropic Cosserat parameters: bounded stiffness in bending and torsion implies conformal invariance of curvature
    In: Acta Mechanica , Jg. 211 2010 , Nr. 3 , S. 237 - 249
    DOI
  • Neff, Patrizio; Jeong, Jena
    A new paradigm : the linear isotropic Cosserat model with conformally invariant curvature energy
    In: ZAMM: Zeitschrift für Angewandte Mathematik und Mechanik , Jg. 89 2009 , Nr. 2 , S. 107 - 122
    DOI
  • Neff, Patrizio; Jeong, Jena; Münch, Ingo; Ramézani, Hamidréza
    A numerical study for linear isotropic Cosserat elasticity with conformally invariant curvature
    In: ZAMM: Zeitschrift für Angewandte Mathematik und Mechanik , Jg. 89 2009 , Nr. 7 , S. 552 - 569
    DOI
  • Ebbing, Vera; Schröder, Jörg; Neff, Patrizio
    Approximation of anisotropic elasticity tensors at the reference state with polyconvex energies
    In: Archive of Applied Mechanics , Jg. 79 2009 , Nr. 6-7 , S. 651 - 657
    DOI
  • Ebbing, Vera; Balzani, Daniel; Schröder, Jörg; Neff, Patrizio; Gruttmann, Friedrich
    Construction of anisotropic polyconvex energies and applications to thin shells
    In: Computational Materials Science , Jg. 46 2009 , Nr. 3 , S. 639 - 641
    DOI
  • Neff, Patrizio; Chełmiński, Krzysztof
    H1loc-stress and strain regularity in Cosserat plasticity
    In: ZAMM: Zeitschrift für Angewandte Mathematik und Mechanik , Jg. 89 2009 , Nr. 4 , S. 257 - 266
    DOI
  • Neff, Patrizio; Jeong, Jena; Münch, Ingo
    Mean field modeling of isotropic random Cauchy elasticity versus microstretch elasticity
    In: Zeitschrift für Angewandte Mathematik und Physik , Jg. 60 2009 , Nr. 3 , S. 479 - 497
    DOI
  • Ebbing, Vera; Schröder, Jörg; Neff, Patrizio; Gruttmann, Friedrich
    Micromechanical Modeling of Woven Fiber Composites for the Construction of Effective Anisotropic Polyconvex Energies
    In: Proceedings in Applied Mathematics and Mechanics: PAMM / 80th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM), Gdansk 2009 , Jg. 10 2009 , Nr. 1, Special Issue: 80th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM), Gdansk 2009 , S. 333 - 334
    DOI
  • Neff, Patrizio; Sydow, Antje; Wieners, Christian
    Numerical approximation of incremental infinitesimal gradient plasticity
    In: International journal for numerical methods in engineering , Jg. 77 2009 , Nr. 3 , S. 414 - 436
    DOI
  • Neff, Patrizio; Menzel, Andreas; Svendsen, Bob
    On Constitutive and Configurational Aspects of Models for Gradient Continua with Microstructure
    In: ZAMM: Zeitschrift für Angewandte Mathematik und Mechanik , Jg. 89 2009 , Nr. 8 , S. 687 - 697
    DOI
  • Neff, Patrizio; Münch, Ingo
    Simple shear in nonlinear Cosserat elasticity: Bifurcation and induced microstructure
    In: Continuum Mechanics and Thermodynamics , Jg. 21 2009 , Nr. 3 , S. 195 - 221
    DOI
  • Neff, Patrizio; Ramézani, Hamidréza; Jeong, Jena
    Subgrid interaction and micro-randomness : Novel invariance requirements in infinitesimal gradient elasticity
    In: International Journal of Solids and Structures , Jg. 46 2009 , Nr. 25-26 , S. 4261 - 4276
    DOI
  • Neff, Patrizio; Jeong, Jena; Hong, Kwon-Il
    The Reissner-Mindlin plate is the Gamma-limit of Cosserat elasticity
    In: Proceedings in Applied Mathematics and Mechanics (PAMM) , Jg. 9 2009 , Nr. 1, Special Issue: 80th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM), Gdansk 2009 , S. 541 - 542
    DOI
  • Neff, Patrizio; Wagner, W.; Münch, Ingo
    Theory and FE-analysis for structures with large deformation under magnetic loading
    In: Computational Mechanics , Jg. 44 2009 , Nr. 1 , S. 93 - 102
    DOI
  • Neff, Patrizio; Weinberg, Kerstin
    A geometrically exact thin membrane model : Investigation of large deformations and wrinkling
    In: International journal for numerical methods in engineering , Jg. 74 2008 , Nr. 6 , S. 871 - 893
    DOI
  • Neff, Patrizio; Chełmiński, Krzysztof
    A note on approximation of Prandtl-Reuss plasticity through Cosserat plasticity
    In: Quarterly of applied mathematics , Jg. 66 2008 , Nr. 2 , S. 351 - 357
    DOI
  • Schröder, Jörg; Neff, Patrizio; Ebbing, Vera
    Anisotropic Polyconvex Energies on the Basis of Crystallographic Motivated Structural Tensors.
    In: Journal of the Mechanics and Physics of Solids , Jg. 56 2008 , Nr. 12 , S. 3486 - 3506
    DOI
  • Neff, Patrizio; Münch, Ingo
    Curl bounds Grad on SO(3)
    In: ESAIM Control Optimisation and Calculus of Variations , Jg. 14 2008 , Nr. 1 , S. 148 - 159
    DOI
  • Neff, Patrizio; Klawonn, Axel; Vanisy, Stefanie; Rheinbach, Oliver
    FETI-DP Methods for P-Elasticity
    In: Proceedings in Applied Mathematics and Mechanics (PAMM) , Jg. 8 2008 , Nr. 1, Special Issue: 79th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM), Bremen 2008 , S. 10859 - 10860
    DOI
  • Neff, Patrizio; Münch, Ingo; Wagner, Werner
    Microstructural behaviour of transversal isotropic material
    In: Proceedings in Applied Mathematics and Mechanics (PAMM) , Jg. 8 2008 , Nr. 1, Special Issue: 79th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM), Bremen 2008 , S. 10559 - 10560
    DOI
  • Neff, Patrizio; Chełmiński, Krzysztof; Alber, Hans-Dieter
    Notes on strain gradient plasticity: finite strain covariant modeling and global existence in the infinitesimal rate - independent case
    In: Mathematical models and methods in applied sciences , Jg. 19 2008 , Nr. 2 , S. 307 - 346
    DOI
  • Neff, Patrizio; Müller, Wolfgang; Wieners, Christian
    Numerical results for an elasto‐plastic Cosserat model with more than one million dof in 3D
    In: Proceedings in Applied Mathematics and Mechanics (PAMM) , Jg. 8 2008 , Nr. 1, Special Issue: 79th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM), Bremen 2008 , S. 10557 - 10558
    DOI
  • Neff, Patrizio; Ebbing, Vera; Schröder, Jörg
    Polyconvex Models for Arbitrary Anisotropic Materials
    In: Proceedings in Applied Mathematics and Mechanics: PAMM / 79th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM), 31 March - 4 April 2008, Bremen, Germany , Jg. 8 2008 , Nr. 1, Special Issue: 79th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM), Bremen 2008 , S. 10415 - 10416
    DOI
  • Neff, Patrizio; Knees, Dorothee
    Regularity up to the Boundary for Nonlinear Elliptic Systems Arising in Time-Incremental Infinitesimal Elasto-plasticity
    In: SIAM Journal on Mathematical Analysis , Jg. 40 2008 , Nr. 1 , S. 21 - 43
    DOI
  • Neff, Patrizio
    Remarks on invariant modelling in finite strain gradient plasticity
    In: Technische Mechanik: wissenschaftliche Zeitschrift für Anwendungen der technischen Mechanik , Jg. 28 2008 , Nr. 1 , S. 13 - 22
  • Neff, Patrizio; Fischle, Andreas; Münch, Ingo
    Symmetric Cauchy stresses do not imply symmetric Biot strains in weak formulations of isotropic hyperelasticity with rotational degrees of freedom
    In: Proceedings in Applied Mathematics and Mechanics (PAMM) , Jg. 8 2008 , Nr. 1, Special Issue: 79th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM), Bremen 2008 , S. 10419 - 10420
    DOI
  • Neff, Patrizio; Münch, Ingo; Fischle, Andreas
    Symmetric Cauchy stresses do not imply symmetric Biot strains in weak formulations of isotropic hyperelasticity with rotational degrees of freedom
    In: Acta Mechanica , Jg. 197 2008 , Nr. 1 , S. 19 - 30
    DOI
  • Neff, Patrizio; Chełmiński, Krzysztof
    A geometrically exact Cosserat shell-model for defective elastic crystals : Justification via Γ-convergence
    In: Interfaces and free boundaries , Jg. 9 2007 , Nr. 4 , S. 455 - 492
    DOI
  • Neff, Patrizio; Weinberg, Kerstin
    A geometrically exact membrane model for isotropic foils and fabrics
    In: Proceedings in Applied Mathematics and Mechanics (PAMM) , Jg. 7 2007 , Nr. 1, Special Issue: Sixth International Congress on Industrial Applied Mathematics (ICIAM07) and GAMM Annual Meeting, Zürich 2007 , S. 4030007 - 4030008
    DOI
  • Neff, Patrizio; Forest, Samuel
    A geometrically exact micromorphic model for elastic metallic foams accounting for affine microstructure : modelling, existence of minimizers, identification of moduli and computational results
    In: Journal of elasticity: the physical and mathematical science of solids , Jg. 87 2007 , Nr. 2 , S. 239 - 276
    DOI
  • Neff, Patrizio
    A geometrically exact planar Cosserat shell model with microstructure : existence of minimizers for zero Cosserat couple modulus
    In: Mathematical models and methods in applied sciences , Jg. 17 2007 , Nr. 3 , S. 363 - 392
    DOI
  • Neff, Patrizio
    Global existence in rate-independent infinitesimal strain gradient plasticity
    In: Proceedings in Applied Mathematics and Mechanics (PAMM) , Jg. 7 2007 , Nr. 1, Special Issue: Sixth International Congress on Industrial Applied Mathematics (ICIAM07) and GAMM Annual Meeting, Zürich 2007 , S. 4080037 - 4080038
    DOI
  • Ebbing, Vera; Schröder, Jörg; Neff, Patrizio
    On the construction of anisotropic polyconvex energy densities
    In: Proceedings in Applied Mathematics and Mechanics: PAMM / 6th International Congress on Industrial and Applied Mathematics, ICIAM07, and GAMM Annual Meeting , 16–20 July 2007, Zürich , Jg. 7 2007 , Nr. 1, Special Issue: Sixth International Congress on Industrial Applied Mathematics (ICIAM07) and GAMM Annual Meeting, Zürich 2007 , S. 4060009 - 4060010
    DOI
  • Neff, Patrizio; Chełmiński, Krzysztof
    Well-posedness of dynamic Cosserat plasticity
    In: Applied Mathematics & Optimization , Jg. 56 2007 , Nr. 1 , S. 19 - 35
    DOI
  • Neff, Patrizio
    A finite-strain elastic–plastic Cosserat theory for polycrystals with grain rotations
    In: International Journal of engineering science , Jg. 44 2006 , Nr. 8-9 , S. 574 - 594
    DOI
  • Neff, Patrizio; Merodio, J.
    A note on tensile instabilities and loss of ellipticity for a fiber-reinforced nonlinearly elastic solid
    In: Archives of mechanics: (=Archiwum mechaniki stosowanej) , Jg. 58 2006 , Nr. 3 , S. 293 - 303
  • Balzani, Daniel; Neff, Patrizio; Schröder, Jörg; Holzapfel, Gerhard A.
    A polyconvex framework for soft biological tissues : Adjustment to experimental data
    In: International Journal of Solids and Structures , Jg. 43 2006 , Nr. 20 , S. 6052 - 6070
    DOI
  • Neff, Patrizio; Münch, Ingo; Wagner, W.
    Constitutive modeling and FEM for a nonlinear Cosserat continuum
    In: Proceedings in Applied Mathematics and Mechanics (PAMM) , Jg. 6 2006 , Nr. 1, Special Issue: GAMM Annual Meeting 2006 – Berlin , S. 499 - 500
    DOI
  • Neff, Patrizio
    Existence of minimizers for a finite-strain micromorphic elastic solid
    In: Proceedings of the Royal Society of Edinburgh: Section A: Mathematics , Jg. 136 2006 , Nr. 5 , S. 997 - 1012
    DOI
  • Neff, Patrizio; Balzani, Daniel; Schröder, Joachim; Holzapfel, Gerhard
    Materially stable constitutive equations for arterial walls based on polyconvex energies : application to damage modeling and residual stresses
    In: Journal of Biomechanics / 5th World Congress of Biomechanics, Munich, July 29th - August 4th 2006 , Jg. 39 2006 , Nr. Supplement 1: Abstracts of the 5th World Congress of Biomechanics , S. 409
    DOI
  • Neff, Patrizio
    The Cosserat couple modulus for continuous solids is zero viz the linearized Cauchy‐stress tensor is symmetric
    In: ZAMM: Zeitschrift für Angewandte Mathematik und Mechanik , Jg. 86 2006 , Nr. 11 , S. 892 - 912
    DOI
  • Neff, Patrizio
    A geometrically exact viscoplastic membrane-shell with viscoelastic transverse shear resistance avoiding degeneracy in the thin-shell limit : Part I: The viscoelastic membrane-plate
    In: Zeitschrift für Angewandte Mathematik und Physik , Jg. 56 2005 , Nr. 1 , S. 148 - 182
    DOI
  • Schröder, Jörg; Neff, Patrizio; Balzani, Daniel
    A variational approach for materially stable anisotropic hyperelasticity
    In: International Journal of Solids and Structures , Jg. 42 2005 , Nr. 15 , S. 4352 - 4371
    DOI
  • Neff, Patrizio
    Critique of "Two-dimensional examples of rank-one convex functions that are not quasiconvex" by M. K. Benaouda and J. J. Telega
    In: Annales Polonici Mathematici , Jg. 86 2005 , Nr. 2 , S. 193 - 195
    DOI
  • Neff, Patrizio; Chełmiński, Krzysztof
    Infinitesimal elastic–plastic Cosserat micropolar theory : modelling and global existence in the rate-independent case
    In: Proceedings of the Royal Society of Edinburgh: Section A: Mathematics , Jg. 135 2005 , Nr. 5 , S. 1017 - 1039
    DOI
  • Neff, Patrizio
    Local existence and uniqueness for a geometrically exact membrane‐plate with viscoelastic transverse shear resistance
    In: Mathematical Methods in the Applied Sciences , Jg. 28 2005 , Nr. 9 , S. 1031 - 1060
    DOI
  • Neff, Patrizio
    Local existence and uniqueness for quasistatic finite plasticity with grain boundary relaxation
    In: Quarterly of applied mathematics , Jg. 63 2005 , Nr. 1 , S. 88 - 116
    DOI
  • Neff, Patrizio
    The Γ-limit of a finite strain Cosserat model for asymptotycally thin domains and a consequence for the Cosserat couple modulus
    In: Proceedings in Applied Mathematics and Mechanics (PAMM) , Jg. 5 2005 , Nr. 1, Special Issue: GAMM Annual Meeting 2005 – Luxembourg , S. 629 - 630
    DOI
  • Neff, Patrizio
    A geometrically exact Cosserat shell-model including size effects, avoiding degeneracy in the thin shell limit : Part I: Formal dimensional reduction for elastic plates and existence of minimizers for positive Cosserat couple modulus
    In: Continuum Mechanics and Thermodynamics , Jg. 16 2004 , Nr. 6 , S. 577 - 628
    DOI
  • Neff, Patrizio
    Existence of minimizers for a geometrically exact Cosserat solid
    In: Proceedings in Applied Mathematics and Mechanics (PAMM) , Jg. 4 2004 , Nr. 1 , S. 548 - 549
    DOI
  • Neff, Patrizio
    Optimal BV estimates for a discontinuous Galerkin method in linear elasticity
    In: Applied mathematics research eXpress , Jg. 3 2004 , S. 73 - 106
    DOI
  • Neff, Patrizio; Wieners, Christian
    Comparison of models for finite plasticity : a numerical study
    In: Computing and Visualization in Science , Jg. 6 2003 , Nr. 1 , Seiten 23 - 35
    DOI
  • Schröder, Jörg; Neff, Patrizio
    Construction of polyconvex, anisotropic free-energy functions
    In: Proceedings in Applied Mathematics and Mechanics: PAMM , Jg. 2 2003 , Nr. 1 , S. 172 - 173
    DOI
  • Neff, Patrizio
    Finite multiplicative plasticity for small elastic strains with linear balance equations and grain boundary relaxation
    In: Continuum Mechanics and Thermodynamics , Jg. 15 2003 , Nr. 2 , Seiten 161-195
    DOI
  • Schröder, Jörg; Neff, Patrizio
    Invariant formulation of hyperelastic transverse isotropy based on polyconvex free energy functions
    In: International Journal of Solids and Structures , Jg. 40 2003 , S. 401 - 445
    DOI
  • Neff, Patrizio
    Polyconvexity of generalized polynomial-type hyperelastic strain energy funtions for near-incompressibility
    In: International Journal of Solids and Structures , Jg. 40 2003 , Nr. 11 , S. 2767 - 2791
    DOI
  • Neff, Patrizio
    On Korn's first inequality with non-constant coefficients
    In: Proceedings of the Royal Society of Edinburgh: Section A: Mathematics , Jg. 132 2002 , Nr. 1 , S. 221 - 243
    DOI
  • Neff, Patrizio
    On a viscoplastic approximation in finite plasticity
    In: Proceedings in Applied Mathematics and Mechanics (PAMM) , Jg. 1 2002 , Nr. 1 , S. 403 - 404
    DOI
  • Neff, Patrizio
    A model describing small elastic deformations and Korn's inequality with nonconstant coefficients
    In: ZAMM: Zeitschrift für Angewandte Mathematik und Mechanik , Jg. 81 2001 , Nr. S3 , S. 607 - 608
    DOI

    • Aufsätze

  • Neff, Patrizio; Mihai, L Angela
    Injectivity of the Cauchy-stress tensor along rank-one connected lines under strict rank-one convexity condition
    2016
  • Neff, Patrizio; Madeo, Angela; Collet, Manuel; Miniaci, Marco; Billon, Kévin; Ouisse, Morvan
    Modeling real phononic crystals via the weighted relaxed micromorphic model with free and gradient micro-inertia
    2016
  • Neff, Patrizio; Münch, Ingo
    On isotropy conditions in second gradient materials
    87th Annual Meeting of the International Association of Applied Mathematics and Mechanics, GAMM 2016, March 7.-11.2016, Braunschweig, Germany,
    2016
  • Neff, Patrizio; Fischle, Andreas; Borisov, Lev
    Optimality of the relaxed polar factors by a characterization of the set of real square roots of real symmetric matrices
    2016
  • Neff, Patrizio; Fischle, Andreas; Raabe, Dierk
    The relaxed-polar mechanism of locally optimal Cosserat rotations for an idealized nanoindentation and comparison with 3D-EBSD experiments
    Emerging trends in applied mathematics and mechanics, ETAMM 2016, May 30 - June 3, 2016, Perpignan, France,
    2016
  • Neff, Patrizio
    A generalization of Korn’s first inequality to incompatible tensor fields with applications in gradient plasticity
    2015
    DOI
  • Neff, Patrizio; Ghiba, Dumitrel; Münch, Ingo; Madeo, Angela
    Correct traction boundary conditions in the indeterminate couple stress model
    2015
  • Neff, Patrizio; Ebobisse, Francois; Reddy, B. Daya
    Existence results in dislocation based rate-independent isotropic gradient plasticity with kinematical hardening and plastic spin: The case with symmetric local backstress
    2015
  • Neff, Patrizio
    The sum of squared logarithms conjecture
    2015
    DOI
  • Neff, Patrizio; Ghiba, Dumitrel; Lankeit, Johannes
    Rank one convexity of the exponentiated Hencky-logarithmic strain energy in finite elastostatics
    2014
  • Neff, Patrizio; Klawonn, Axel; Vanis, Stefanie; Rheinbach, Oliver
    Notes on FETI-DP domain decomposition methods for P-elasticity
    2010
  • Neff, Patrizio; Münch, Ingo; Wagner, W.
    Experiment and modelling of the microstructural behaviour for transversaly isotropic materials under tension loading
    2008
  • Neff, Patrizio
    Reconsidering the linear isotropic indeterminate couple stress model (Koiter-Mindlin-Toupin-model)
    2008
  • Neff, Patrizio
    Relations of constants for isotropic linear Cosserat elasticity
    2008
  • Neff, Patrizio
    Bella Figura in Udine : Report zum CISM-Kurs in Udine
    CISM-Kurs "Poly-, Quasi-, and Rank-One Convexity in applied mechanics", 24.09. bis 28.09.2007 in Udine, Italien.,
    2007
    DOI

    • Vorworte / Nachworte

  • Neff, Patrizio; Alber, Hans-Dieter
    Preface of the guest-editors Authors
    In: GAMM-Mitteilungen , Jg. 34 2011 , Nr. 1 , S. 8 - 9
    DOI
  • Schröder, Jörg; Neff, Patrizio
    Preface
    In: Poly-, Quasi- and Rank-One Convexity in Applied Mechanics / Schröder, Jörg; Neff, Patrizio (Hrsg.) 2010

    • Abstracts

  • Lankeit, Johannes; Neff, Patrizio; Pauly, Dirk
    Unique continuation for first-order systems with integrable coefficients and applications to elasticity and plasticity
    In: Comptes Rendus Mathématique , Jg. 351 2013 , Nr. 5/6 , S. 247 - 250
    DOI

    • Preprints

  • Neff, Patrizio; Martin, Robert; Eidel, Bernhard
    The axiomatic deduction of the quadratic Hencky strain energy by Heinrich Hencky
    2014
    Online Volltext (Open Access)

    • Beiträge in Sammelwerken und Tagungsbänden

  • Birsan, Mircea; Neff, Patrizio
    On the Coercivity of Strain Energy Functions in Generalized Models of 6-Parameter Shells
    In: Sixty Shades of Generalized Continua: Dedicated to the 60th Birthday of Prof. Victor A. Eremeyev / Altenbach, Holm; Berezovski, Arkadi; dell'Isola, Francesco; Porubov, Alexey (Hrsg.) 2023 , S. 63 - 90
    DOI
  • Madeo, Angela; Neff, Patrizio
    Dispersion of waves in micromorphic media and metamaterials
    In: Handbook of nonlocal continuum mechanics for materials and structures / Voyiadjis, George Z. (Hrsg.) 2019 , S. 713 - 739
    DOI
  • Madeo, Angela; Neff, Patrizio; Barbagallo, Gabriele; D’Agostino, Marco Valerio; Ghiba, Ionel-Dumitrel
    A review on wave propagation modeling in band-gap metamaterials via enriched continuum models
    In: Mathematical modelling in solid mechanics / dell'Isola, Francesco; Sofonea, Mircea; Steigmann, David (Hrsg.) 2017 , S. 89 - 105
    DOI
  • Birsan, Mircea; Neff, Patrizio
    Analysis of the deformation of cosserat elastic shells using the dislocation density tensor
    In: Mathematical Modelling in Solid Mechanics / International conference on Emerging Trends in Applied Mathematics and Mechanics, ETAMM 2016; Perpignan; France; 30 May 2016 through 3 June 2016 / dell'Isola, Francesco; Sofonea, Mircea; Steigmann, David (Hrsg.) 2017 , S. 13 - 30
    DOI
  • Baaser, Herbert; Nedjar, Boumedienne; Martin, Robert; Neff, Patrizio
    Eversion of tubes : Comparison of material models
    In: Constitutive Models for Rubber X: Proceedings of the 10th European Conference on Constitutive Models for Rubbers X / ECCMR X 2017; Munich; Germany; 28 - 31 August 2017 2017 , S. 109 - 113
    DOI
  • Neff, Patrizio; Martin, Robert; Eidel, Bernhard
    New thoughts in nonlinear elasticity theory via Hencky’s logarithmic strain tensor
    In: Mathematical Modelling in Solid Mechanics / International Conference on Emerging Trends in Applied Mathematics and Mechanics, ETAMM 2016; Perpignan; France; 30 May 2016 through 3 June 2016 / dell'Isola, Francesco; Sofonea, Mircea; Steigmann, David (Hrsg.) 2017 , S. 165 - 180
    DOI
  • Neff, Patrizio; Ghiba, Dumitrel
    Comparison of isotropic elasto-plastic models for the plastic metric tensor C_p=F_p^T F_p
    In: Innovative Numerical Approaches for Multi-Field and Multi-Scale Problems: in Honor of Michael Ortiz's 60th Birthday / Weinberg, Kerstin; Pandolfi, Anna (Hrsg.) 2016
    DOI
  • Birsan, Mircea; Neff, Patrizio
    On the dislocation density tensor in the Cosserat theory of elastic shells
    In: Advanced methods of continuum mechanics for materials and structures / Naumenko, Konstantin; Aßmus, Marcus (Hrsg.) 2016 , S. 391 - 413
    DOI (Open Access)
  • Neff, Patrizio
    Existence of Minimizers in Nonlinear Elastostatics of Micromorphic Solids
    In: Encyclopedia of Thermal Stresses / Hetnarski, Richard B. (Hrsg.) 2014 , S. 1475 - 1485
    DOI
  • Neff, Patrizio; Pauly, Dirk; Witsch, Karl-Josef
    On an extension of Korn's first inequality to incompatible tensor fields on domains of arbitrary dimensions
    In: Modeling, Simulation and Optimization for Science and Technology / Fitzgibbon, William (Hrsg.) 2014 , S. 139 - 159
    DOI
  • Birsan, Mircea; Neff, Patrizio
    On the characterization of drilling rotation in the 6-parameter resultant shell theory
    In: Shell Structures: Theory and Applications: Proceedings of the 10th SSTA 2013 Conference / 10th SSTA Conference, Gdansk, Poland 16. - 18. October 2013 / Pietraszkiewicz, Wojciech (Hrsg.) , Jg. 3 2014 , S. 61 - 64
    DOI, Online Volltext (Open Access)
  • Neff, Patrizio; Münch, Ingo; Wagner, Werner
    A micropolar continuum model for large deformation caused by magnetic or electric fields
    In: Behavior and Mechanics of Multifunctional Materials and Composites / Behavior and Mechanics of Multifunctional Materials and Composites 20011, 7–9 March 2011 San Diego, California, United States / Ounaies, Zoubeida (Hrsg.) 2011 , S. 24
    DOI
  • Münch, Ingo; Neff, Patrizio
    A nonlinear micropolar continuum theory for initial plasticity
    In: Advances and Trends in Structural Engineering, Mechanics and Computation / Fourth International Conference on Structural Engineering, Mechanics and Computation, SEMC 2010, Cape Town, South Africa, 6-8 September 2010 / Zingoni, Alphose (Hrsg.) 2010 , S. 65 - 66
  • Balzani, Daniel; Schröder, Jörg; Neff, Patrizio
    Applications of anisotropic polyconvex energies : thin shells and biomechanics of arterial walls
    In: Poly-, Quasi- and Rank-One Convexity in Applied Mechanics / Schröder, Jörg; Neff, Patrizio (Hrsg.) 2010 , S. 131 - 176
    DOI
  • Ebbing, Vera; Schröder, Jörg; Neff, Patrizio
    Construction of polyconvex energies for non-trivial anisotropy classes
    In: Poly-, quasi- and rank-one convexity in applied mechanics / Schröder, Jörg (Hrsg.) 2010 , S. 107 - 130
    DOI
  • Neff, Patrizio; Jeong, Jena; Münch, Ingo; Ramézani, Hamidréza
    Linear Cosserat Elasticity, Conformal Curvature and Bounded Stiffness
    In: Mechanics of Generalized Continua: One Hundred Years After the Cosserats / Maugin, Gérard A. (Hrsg.) 2010 , S. 55 - 63
    DOI
  • Schröder, Jörg; Neff, Patrizio; Ebbing, Vera
    Polyconvex energies for trigonal, tetragonal and cubic symmetry groups
    In: IUTAM Symposium on Variational Concepts with Applications to the Mechanics of Materials: Proceedings of the IUTAM Symposium on Variational Concepts with Applications to the Mechanics of Materials / IUTAM Symposium on Variational Concepts with Applications to the Mechanics of Materials, 22-26 September 2008, Bochum, Germany / Hackl, Klaus (Hrsg.) 2010 , S. 221 - 232
    DOI
  • Neff, Patrizio; Hong, K.-I.
    The Reissner-Mindlin plate is the Γ-limit of linear Cosserat elasticity
    In: Shell Structures: Theory and Applications: Volume 2 : Proceedings of the 9th SSTA Conference / Pietraszkiewicz, Wojciech; Kreja, Ireneusz; SSTA Conference, Gdańsk - Jurata, Poland, 14 - 16 October 2009 2010 , S. 91 - 94
  • Neff, Patrizio
    Γ-convergence for a geometrically exact Cosserat shell-model of defective elastic crystals
    In: Poly-, Quasi- and Rank-One Convexity in Applied Mechanics / Schröder, Jörg; Neff, Patrizio (Hrsg.) 2010 , S. 301 - 361
    DOI
  • Ebbing, Vera; Schröder, Jörg; Steinmann, Paul; Neff, Patrizio
    On the computation of configurational forces in anisotropic hyperelastic solids
    In: IUTAM Symposium on Progress in the Theory and Numerics of Configurational Mechanics: Proceedings of the IUTAM Symposium held in Erlangen, Germany, October 20-24, 2008 / IUTAM Symposium on Progress in the Theory and Numerics of Configurational Mechanics, 20-24 October 2008, Erlangen, Germany / Steinmann, Paul (Hrsg.) 2009 , S. 261 - 270
    DOI
  • Neff, Patrizio; Hong, K.-I.
    The Reissner-Mindlin plate is the Gamma-limit of linear Cosserat elasticity
    In: Shell Structures: Theory and Applications: Proceedings of the 9th SSTA Conference, Jurata, Poland, 14-16 October 2009. - Band 2 / 9th SSTA Conference, Jurata, Poland, 14-16 October 2009 / Pietraszkiewicz, Wojciech (Hrsg.) 2009 , S. 91 - 94
    DOI
  • Neff, Patrizio; Münch, Ingo; Wagner, Werner
    3D Modeling of Thin-Walled Structures : Physical applications for a nonlinear micropolar formulation on shells
    In: Proceedings of the 6th International Conference on Computation of Shell & Spatial Structures: Spanning Nano to Mega / 6th International Conference on Computation of Shell & Spatial Structures: IASS-IACM 2008 - "Spanning Nano to Mega" 28-31 May 2008, Cornell University, Ithaca, New York, USA / Abel, J. (Hrsg.) 2008 , S. 17 - 21
  • Neff, Patrizio
    Uniqueness of Strong Solutions in Infinitesimal Perfect Gradient-Plasticity with Plastic Spin
    In: UTAM Symposium on Theoretical, Computational and Modelling Aspects of Inelastic Media: Proceedings of the IUTAM Symposium held at Cape Town, South Africa, January 14–18, 2008 / IUTAM Symposium Cape Town, South Africa, January 14–18, 2008 / Reddy, B. Daya (Hrsg.) 2008 , S. 129 - 140
    DOI
  • Schröder, Jörg; Neff, Patrizio
    Polyconvex anisotropic hyperelastic energies
    In: III European Conference on Computational Mechanics (ECCM III): Solids, Structures and Coupled Problems in Engineering: Book of Abstracts / III European Conference on Computational Mechanics (ECCM III), Solids, Structures and Coupled Problems in Engineering, 5.-8-. Juni 2006, Lissabon, Portugal 2006 , S. 272
    DOI
  • Balzani, Daniel; Schröder, Jörg; Gross, Dietmar; Neff, Patrizio
    Modeling of anisotropic damage in arterial walls based on polyconvex stored energy functions
    In: Computational plasticity: fundamentals and applications : proceedings of the Eighth International Conference on Computational Plasticity held in Barcelona, Spain, 5th - 7th September 2005 / VIII International Conference on Computational Plasticity, COMPLAS VIII, 5. - 7. September 2005, Barcelona / Owen, D. R. J. (Hrsg.) 2005 , S. 802 - 805
  • Neff, Patrizio
    On material constants for micromorphic continua
    In: Trends in applications of mathematics to mechanics: proceedings of the XIVth International Symposium on Trends in Applications of Mathematics to Mechanics (STAMM2004) Seeheim, Germany, 22, 28 August 2004 / XIVth International Symposium on Trends in Applications of Mathematics to Mechanics (STAMM2004) Seeheim, Germany, 22, 28 August 2004 / Wang, Yongqi (Hrsg.) 2005 , S. 337 - 348
  • Neff, Patrizio
    Local existence and uniqueness for a model of finite multiplicative visco-plasticity and the role of an extended Korn's first inequality
    In: Progress in Analysis: Proceedings of the 3rd ISAAC Congress Berlin, Germany, 20 – 25 August 2001 , Band 2 / 3rd ISAAC Congress Berlin, Germany, 20 – 25 August 2001 / Begehr, Heinrich (Hrsg.) 2003 , S. 1311 - 1315
    DOI
  • Schröder, Jörg; Neff, Patrizio
    On the construction of polyconvex anisotropic free energy functions
    In: IUTAM-symposium on computational mechanics of solid materials at large strains / IUTAM Symposium, 20–24 August 2001, Stuttgart, Germany / Miehe, Christian (Hrsg.) 2003 , S. 171 - 180
    DOI
  • Neff, Patrizio
    Some results concerning the mathematical treatment of finite plasticity
    In: Deformation and failure in metallic materials / Hutter, Kolumban (Hrsg.) 2003 , S. 251 - 274
  • Schröder, Jörg; Neff, Patrizio
    Application of polyconvex anisotropic free energies to soft tissues
    In: Proceedings of the Fifth World Congress on Computational Mechanics / Fifth World Congress on Computational Mechanics, 7-12 July 2002, Vienna, Austria 2002

    • Bücher/Sammelwerke/Tagungsbände

  • Neff, Patrizio
    The geometrically nonlinear Cosserat micropolar shear-stretch energy : Part I: A general parameter reduction formula and energy-minimizing microrotations in 2D
    2016
    (Schriftenreihe der Fakultät für Mathematik / Universität Duisburg-Essen ; 795)
  • Neff, Patrizio; Ghiba, Dumitrel; Madeo, Angela; Münch, Ingo
    The modifed indeterminate couple stress model : Why Yang et al.'s arguments motivating a symmetric couple stress tensor contain a gap and why the couple stress tensor may be chosen symmetric nevertheless
    2016
    (Schriftenreihe der Fakultät für Mathematik / Universität Duisburg-Essen ; 796)
  • Neff, Patrizio; Pompe, Waldemar
    Counterexamples in the theory of coerciveness for linear elliptic systems related to generalizations of Korn's second inequality
    2013
    (Schriftenreihe der Fakultät für Mathematik / Universität Duisburg-Essen ; 765)
  • Birsan, Mircea; Neff, Patrizio
    Existence of minimizers in the geometrically non-linear 6-parameter resultant shell theory with drilling rotations
    2013
    (Schriftenreihe der Fakultät für Mathematik / Universität Duisburg-Essen ; 761)
  • Neff, Patrizio; Pauly, Dirk; Witsch, Karl-Josef
    On an extension of Korn's first inequality to incompatible tensor fields on domains of arbitrary dimensions
    2013
    (Schriftenreihe der Fakultät für Mathematik / Universität Duisburg-Essen ; 763)
  • Neff, Patrizio; Pauly, Dirk; Witsch, Karl-Josef
    Poincaré meets Korn via Maxwell : extending Korn's first inequality to incompatible tensor fields
    2013
    (Schriftenreihe der Fakultät für Mathematik / Universität Duisburg-Essen ; 753)
  • Birsan, Mircea; Neff, Patrizio; Lankeit, Johannes
    Sum of squared logarithms : an inequality relating positive definite matrices and their matrix logarithm
    2013
    (Schriftenreihe der Fakultät für Mathematik / Universität Duisburg-Essen ; 762)
  • Neff, Patrizio; Nakatsukasa, Yuji; Fischle, Andreas
    The unitary polarv factor Q = U p minimizes Log (Q Z) 2 and sym Log(Q Z) 2 in the spectral norm in any dimension and the Frobenius matrix norm in three dimensions
    2013
    (Schriftenreihe der Fakultät für Mathematik / Universität Duisburg-Essen ; 764)
  • Birsan, Mircea; Neff, Patrizio
    Existence theorems in the geometrically non-linear 6-parametric theory of elastic plates
    2012
    (Schriftenreihe der Fakultät für Mathematik / Universität Duisburg-Essen ; 754)
  • Lankeit, Johannes; Neff, Patrizio; Pauly, Dirk
    Uniqueness of integrable solutions to nabla zeta = G zeta zeta gamma = 0 or integrable tensor
    2012
    (Schriftenreihe der Fakultät für Mathematik, Universität Duisburg-Essen ; 756)
  • Schröder, Jörg; Neff, Patrizio
    Poly-, quasi- and rank-one convexity in applied mechanics
    Wien 2010
    (CISM courses and lectures ; 516)
    DOI
  • Neff, Patrizio
    Geometrically exact Cosserat theory for bulk behaviour and thin structures : modelling and mathematical analysis
    2004

    • Dissertation

  • Neff, Patrizio
    Mathematische Analyse multiplikativer Viskoplastizität
    Aachen 2000 (Berichte aus der Mathematik)

    • Poster / Posterbeiträge

  • Neff, Patrizio; Eidel, Bernhard; Martin, Robert; Münch, Ingo
    A brief history of logarithmic strain measures in nonlinear elasticity
    2016
    DOI
  • Neff, Patrizio; Ghiba, Dumitrel; Madeo, Angela; Placidi, Luca; Rosi, Giuseppe; Abreu, Rafael; d'Agostino, Marco Valerio; Barbagallo, Gabriele
    Complete frequency band-gaps in the relaxed micromorphic model
    2016
  • Neff, Patrizio; Martin, Robert; Münch, Ingo
    Geometry of logarithmic strain measures
    2016
    DOI
  • Neff, Patrizio; Madeo, Angela; Riße, Anne-Sophie; Thomas, Christine; Ferreira, A.; Kamm, Jochen; Abreu, Rafael
    Modelling rotational waves in seismology
    2016
    DOI
  • Neff, Patrizio; Martin, Robert; Ghiba, Dumitrel
    Rank-one convexity implies polyconvexity for isotropic energies on SL(2)
    2016
    DOI
  • Neff, Patrizio; Ghiba, Dumitrel; Martin, Robert
    Rank-one convexity vs. polyconvexity for isochoric energies on GL^+(2)
    2016
  • Neff, Patrizio; Ghiba, Dumitrel; Madeo, Angela; Barbagallo, Gabriele; d'Agostino, Marco Valerio; Abreu, Rafael
    Real wave propagation in the isotropic relaxed micromorphic model
    2016
    DOI
  • Neff, Patrizio; Ghiba, Dumitrel; Madeo, Angela; Barbagallo, Gabriele; Rosi, Giuseppe; d'Agostino, Marco Valerio
    Reflection and transmission of elastic waves in non-local band-gap metamaterials
    2016
    DOI
  • Neff, Patrizio; Martin, Robert; Eidel, Bernhard
    Strain tensors and strain measures in nonlinear elasticity
    2016
    DOI
  • Neff, Patrizio; Birsan, Mircea
    The 6-parameter Cosserat-shell model
    2016
    DOI
  • Neff, Patrizio; Montella, Giuseppe; Govindjee, Sanjay
    The exponentiated Hencky strain energy in modeling tire derived material
    2016
    DOI
  • Neff, Patrizio; Thiel, Christian; Borisov, Lev; Sra, Suvrit
    The sum of squared logarithms inequality
    2016
  • Neff, Patrizio; Ghiba, Dumitrel; Madeo, Angela; Barbagallo, Gabriele; d'Agostino, Marco Valerio; Abreu, Rafael
    Transparent anisotropy for the relaxed micromorphic model
    2016
    DOI
  • Neff, Patrizio; Eidel, Bernhard; Martin, Robert
    Minimal geodesics on GL(n) for left-invariant, right-O(n)-invariant Riemannian metrics
    2015
  • Neff, Patrizio; Ebbing, Vera; Schröder, Jörg
    Construction of anisotropic polyconvex energies on the basis of crystallographic motivated structural tensors
    2008

    • Vorträge

  • Neff, Patrizio; Madeo, Angela; Martin, Robert
    Presentation: Grioli’s legacy in nonlinear elasticity : strain measures and geodesics on GL(3)
    New frontiers in continuum mechanics - dedicated to Prof. Guiseppe Grioli, 21.-22. June 2016, Rome, Italy,
    2016
    DOI
  • Neff, Patrizio; Ghiba, Dumitrel; Martin, Robert
    Presentation: Loss of ellipticity for non-coaxial plastic deformations in additive logarithmic strain plasticity
    15th GAMM-Seminar on Microstructures, Institut Henri Poincaré, Paris, January 22 - 23, 2016,
    2016
  • Neff, Patrizio; Birsan, Mircea
    Presentation: On the dislocation density tensor in the Cosserat theory of elastic shells
    Emerging trends in applied mathematics and mechanics, ETAMM 2016, May 30 - June 3, 2016, Perpignan, France,
    2016
    DOI
  • Neff, Patrizio; Montella, Giuseppe; Govindjee, Sanjay
    Modeling Tire Derived Material for Moderately Large Deformations
    4th International Conference on Material Modeling, May 27.-29., 2015, Berkeley, California,
    2015
  • Neff, Patrizio; Fischle, Andreas
    Presentation: Energy-minimizing Cosserat Microrotations and 3D-EBSD vs. Synthetic Reproduction for Nanoindentation in Copper
    Generalized Continua as Models for Materials with Multi-scale-Effects or under Multi-field-Actions, 21-26 September 2015, Magdeburg,
    2015
  • Neff, Patrizio; Eidel, Bernhard; Martin, Robert
    Presentation: Geometry of logarithmic strain measures in solid mechanics
    9th European Solid Mechanics Conference, ESMC15, July 6-10, 2015, Madrid,
    2015
  • Neff, Patrizio; Ghiba, Dumitrel; Madeo, Angela; Münch, Ingo
    Presentation: Old and new thoughts on the indeterminate couple stress model
    2nd International Symposium on Multiscale Material Mechanics in the 21st Century (Symposium in honor of the 65th birthday of Elias C. Aifantis), 4-9 October, 2015, Antalya/Turkey,
    2015
  • Neff, Patrizio; Böhmer, Christian Gerhard; Seymenoğlu, Belgin
    Presentation: Soliton-like solutions based on geometrically nonlinear Cosserat micropolar elasticity
    Generalized Continua as Models for Materials with Multi-scale-Effects or under Multi-field-Actions, 21-26 September 2015, Magdeburg,
    2015
  • Madeo, Angela; Neff, Patrizio; Ghiba, Dumitrel; Placidi, Luca; Rosi, Giuseppe
    Presentation: The relaxed micromorphic model for the description of band-gaps in metamaterials
    2015
    DOI
  • Ghiba, Dumitrel; Neff, Patrizio; Madeo, Angela; Placidi, Luca; Rosi, Giuseppe
    Presentation: A primer on the relaxed micromorphic continuum model
    85th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM), 10 – 14 March 2014, Erlangen, Germany,
    2014
  • Neff, Patrizio; Witsch, Karl-Josef; Pauly, Dirk
    Presentation: A canonical extension of Korn's first inequality to H(Curl) motivated by gradient plasticity with plastic spin
    8th European Solid Mechanics Conference Graz, Austria July 9-13, 2012,
    2012
  • Neff, Patrizio
    Presentation: Finite Strain Gradient Plasticity
    2011
    DOI
  • Neff, Patrizio; Jeong, Jena; Ramézani, Hamidréza
    Presentation: Subgrid interaction and micro-randomness - novel invariances in infinitesimal gradient elasticity
    First German-French-Russian Symposium on Generalized Continua, 09.08. to 11.08. 2010, Wittenberg,
    2010
  • Neff, Patrizio; Jeong, Jena
    Presentation: Linear Cosserat elasticity, conformal curvature and bounded stiffness
    Euromech 510: Mechanics of Generalized Continua: A hundred years after the Cosserats, May 13-16, 2009, Paris,
    2009
  • Neff, Patrizio; Jeong, Jena; Hong, Kwon-Il
    Presentation: The Reissner-Mindlin plate is the Gamma-limit of Cosserat elasticity
    9th SSTA Conference, Jurata, Poland, 14-16 October 2009,
    2009
  • Neff, Patrizio; Ebbing, Vera; Schröder, Jörg
    Polyconvex models for arbitrary anisotropic materials
    79th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM), 31 March - 4 April 2008, Bremen, Germany,
    Bremen 2008
  • Neff, Patrizio; Chełmiński, Krzysztof; Wieners, Christian; Müller, Wolfgang
    Presentation: A numerical solution method for an infinitesimal elasto-plastic Cosserat model
    7th GAMM-Seminar on Microstructures, January 25-26, Bochum, Germany, 2008,
    2008
  • Neff, Patrizio; Münch, Ingo; Wagner, Werner
    Presentation: Microstructural behavior of transversal isotropic material
    79th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM), 31 March - 4 April 2008, Bremen, Germany,
    2008
  • Neff, Patrizio; Fischle, Andreas; Münch, Ingo
    Presentation: Symmetric Cauchy stresses do not imply symmetric Biot strains in weak formulations of isotropic hyperelasticity with rotational degrees of freedom
    79th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM), 31 March - 4 April 2008, Bremen, Germany,
    2008
  • Neff, Patrizio
    Presentation: The thin-shell Γ-limit for defective elastic crystals
    2007
    DOI
  • Neff, Patrizio; Balzani, Daniel; Gross, Dietmar; Schröder, Jörg
    Modelling of anisotropic damage in arterial walls based on polyconvex stored energy functions
    VIII International Conference on Computational Plasticity, COMPLAS VIII, 5. - 7. September 2005, Barcelona,
    2005
  • Neff, Patrizio
    Presentation: A novel dimensionally reduced finite viscoelastic-plastic shell theory
    2005
    DOI
  • Neff, Patrizio
    Presentation: Constitutive parameters for a nonlinear Cosserat theory : (Oberwolfach 2005)
    2005
    DOI
  • Balzani, Daniel; Schröder, Jörg; Gross, Dietmar; Neff, Patrizio
    Modellierung von Hyperelastizität und Anisotroper Diskontinuierlicher Schädigung in Biologischen Geweben
    Symposium 2004 der Austrian Society of Biomedical Engineering mit dem Thema: Biomedizinische Technik,
    2004
  • Neff, Patrizio
    Presentation: A geometrically exact Cosserat model including sharp interfaces and fracture : mathematical analysis
    2003
    DOI
  • Neff, Patrizio; Wieners, Christian
    Presentation: Comparison of models for finite plasticity : a numerical study
    WCCM V, Fifth World Congress on Computational Mechanics, July 7–12, 2002, Vienna, Austria,
    2002
  • Neff, Patrizio; Lew, Adrian; Sulsky, Deborah; Oritz, Michael
    Presentation: Optimal BV-estimates for a discontinuous Galerkin method in linear elasticity
    2002
    DOI
  • Neff, Patrizio; Lew, Adrian; Sulsky, Deborah; Oritz, Michael
    Presentation: Optimal BV-estimates for a discontinuous Galerkin method in linear elasticity : presented by Adrian Lew
    WCCM V, Fifth World Congress on Computational Mechanics, July 7–12, 2002, Vienna, Austria,
    2002