Neper is a software package for polycrystal generation and meshing. It can deal with 2D and 3D polycrystals with very large numbers of grains. Its main features are:

• Generation of polycrystals from (experimental) morphological properties

  Standard approaches (regular tessellations and Voronoi or Laguerre tessellations) are also available.

• Grain size distribution, grain shape distribution, etc.
• Grain-by-grain data as obtained for example in synchrotron X-ray diffraction (3DXRD, DCT, HEDM, ...) and such as grain centroids/volumes or a full polycrystal image.

• Generation of multiscale microstructures

  Each cell of a primary tessellation is partitioned into a new tessellation, and the process can be repeated an arbitrary number of times. This can be used to mode complex microstructures such as bainitic steel, lamellar Ti-6Al-4V, etc.

• Generation of periodic or semi-periodic microstructures

  The tessellations (and their meshes) can be prescribed periodic or semi-periodic conditions to cancel the effect of free surfaces or reduce the size of the RVE.

• NEW (version 3.3): Generation of uniform orientation distributions

  Orientations can be uniformly distributed (flat ODF) for any number of orientations and any crystal symmetry. Some orientations can even be prescribed.

• Meshing into good-quality elements

  Meshing involves specific methods called regularization, multimeshing and remeshing. The mesh size can be uniform or defined on a per-grain basis.

• Meshing with cohesive elements at interfaces

• Visualization and analysis of the tessellations and meshes

  The scene can be set in great detail and images are generated with publication-quality rendering (see the image on the right). Several metrics are available on the morphological and topological properties.

Neper is built around three modules: generation, meshing and visualization. All the input data are prescribed non-interactively, using command lines and / or ASCII files. Neper can be compiled and run on any Unix-like system.

下面只放效果图了，详细的自己去官网看（包括软件下载）：

   

   

   

   

   

   

网格划分：

   

   

   

   

可视化：

   

   

   

应用：

2019

1. Grabowski, 

   Modelling of thermal expansion of single- and two-phase ceramic polycrystals utilising synthetic 3D microstructures, Computational Materials Science

   , vol. 156, pp. 7–16, 2019.

2018

• D. Zhu, S. Tu, H. Ma, H. Wei, H. Li and C. Wang, 

  Modeling and calculating for the compaction characteristics of waste rock masses, International Journal for Numerical and Analytical Methods in Geomechanics

  , doi:10.1002/nag.2862.
• J.V. Kobylinski, R. Lawitzki, M. Hofmann, C. Krempaszky and E. Werner, 

  Micromechanical behaviour of Ni-based superalloys close to the yield point: a comparative study between neutron diffraction on different polycrystalline microstructures and crystal plasticity finite element modelling, Continuum Mechanics and Thermodynamics

  , doi:10.1007/s00161-018-0720-0.
1. Yang, J. Dirrenberger, E. Monteiro and N. Ranc, 

   Representative volume element size determination for viscoplastic properties in polycrystalline materials, International Journal of Solids and Structures

   , doi:10.1016/j.ijsolstr.2018.09.011.
1. Zhang, Y. Mu, M. Dodaran, S. Shao, D. Moldovan and W.J. Meng, 

   Mechanical failure of CrN/Cu/CrN interfacial regions under tensile loading, Acta Materialia

   , doi:10.1016/j.actamat.2018.08.046.
1. Hu, S. Jiang, J. Tu and Z. Zhou, 

   Subgrain Effect on Grain Scale Plasticity of NiTi Shape Memory Alloy Under Canning Compression: A Crystal Plasticity Finite Element Analysis, Metals and Materials International

   , doi://10.1007/s12540-018-0178-4.
1. Barzdajn, A.T. Paxton, D. Stewart, F.P.E. Dunne, 

   A Crystal Plasticity Assessment of Normally-loaded Sliding Contact in Rough Surfaces and Galling, Journal of the Mechanics and Physics of Solids

   , doi:10.1016/j.jmps.2018.08.004.
1. Chandra, M.K. Samal, R. Kapoor, N. Naveen Kumar, V.M. Chavan and S. Raghunathan, 

   Deformation behavior of Nickel-based superalloy Su-263: Experimental characterization and crystal plasticity finite element modeling, Materials Science and Engineering: A

   , vol. 735, pp. 19-30, 2018.
1. Quey, A. Villani and C. Maurice, 

   Nearly uniform sampling of crystal orientations, Journal of Applied Crystallography

   , vol. 51, pp. 1162-1173, 2018.
1. Chatterjee, M.P. Echlin, M. Kasemer, P.G. Callahan, T.M. Pollock and P. Dawson, 

   Prediction of tensile stiffness and strength of Ti-6Al-4V using instantiated volume elements and crystal plasticity, Acta Materialia

   , doi:10.1016/j.actamat.2018.07.011.
1. Abdelaziz, Q. Zhao and G. Grasselli, 

   Grain based modelling of rocks using the combined finite-discrete element method, Computers and Geotechnics

   , vol. 103, pp. 73-81, 2018.
• M. Marvi-Mashhadi, C.S. Lopez and J. LLorca, 

  Effect polyurethane foams: an experimental and numerical study, Mechanics of Materials

  , doi:10.1016/j.mechmat.2018.06.006.
1. Zhao, W. Wang and Y. Liu, 

   Intergranular mechanical behavior in a blade groove-like component by crystal plasticity model with cohesive zone model, Engineering Fracture Mechanics

   , doi:10.1016/j.engfracmech.2018.06.031.
• B. Hudobivnik, F. Aldakheel and P. Wriggers, 

  A low order 3D virtual element formulation for finite elasto–plastic deformations, Computational Mechanics

  , doi:10.1007/s00466-018-1593-6.
• A.A. El-Aty, Y. Xu, S. Ha and S.-H. Zhang, 

  Computational homogenization of tensile deformation behaviors of a third generation Al-Li alloy 2060-T8 using crystal plasticity finite element method, Materials Science and Engineering: A

  , doi:10.1016/j.msea.2018.06.088.
1. Feng, H. Li, J. Yang, H. Huang, G. Li and D. Huang, 

   Macro-meso scale modeling and simulation of surface roughening: Aluminum alloy tube bending, International Journal of Mechanical Sciences

   , doi:10.1016/j.ijmecsci.2018.06.032.
• I. Benedetti and V. Gulizzi, 

  A grain-scale model for high-cycle fatigue degradation in polycrystalline materials, International Journal of Fatigue

  , pp. 90-105, vol. 116, 2018.
1. Wang and M. Cai, 

   Modeling of brittle rock failure considering inter- and intra-grain contact failures, Computers and Geotechnics

   , vol. 101, pp. 224-244, 2018.
1. de Bortoli, F. Adziman, E.A. de Souza Neto and F.M. Andrade Pires, 

   Constitutive modelling of mechanically induced martensitic transformations: Prediction of transformation surfaces, Engineering Computations

   , vol. 35, pp. 772-799, doi:10.1108/EC-03-2017-0087.
1. Benedetti, 

   A Cohesive-frictional Grain-boundary Technique for Microstructural Analysis of Polycrystalline Materials, Advances in Computational Coupling and Contact Mechanics

   , doi:10.1142/9781786344786_0009.
1. Gribanov, R. Taylor and R. Sarracino, 

   Cohesive zone micromechanical model for compressive and tensile failure of polycrystalline ice, Engineering Fracture Mechanics

   , doi:10.1016/j.engfracmech.2018.04.023.
1. Ghodrati, M. Ahmadian and R. Mirzaeifar, 

   Modeling of Rolling Contact Fatigue in Rails at the Microstructural Level, Wear

   , doi:10.1016/j.wear.2018.04.016.
1. Van Pamel, G. Sha, M.J.S. Lowe and S.I. Rokhin, 

   Numerical and analytic modelling of elastodynamic scattering within polycrystalline materials, The Journal of the Acoustical Society of America

   , vol. 143, pp. 2394, 2018.
1. Gribanov, R. Taylor and R. Sarracino, 

   Parallel implementation of implicit finite element model with cohesive zones and collision response using CUDA, International Journal for Numerical Methods in Engineering

   , doi:10.1002/nme.5825.
1. Bouchedjra, T. Kanit, C. Boulemia, A. Amrouche and M.E.A. Belouchrani, 

   Determination of the RVE size for polycrystal metals to predict monotonic and cyclic elastoplastic behavior: Statistical and numerical approach with new criteria, European Journal of Mechanics - A/Solids

   , doi:10.1016/j.euromechsol.2018.04.011.
1. Alabort, D. Barba, S. Sulzer, M. Libner, N. Petrinic and R.C. Reed, 

   Grain boundary properties of a nickel-based superalloy: characterisation and modelling, Acta Materialia

   , doi:10.1016/j.actamat.2018.03.059.
1. Yuan, W. Zhang, G.M. Castelluccio, J. Kim and Y. Liu, 

   Microstructure-sensitive Estimation of Small Fatigue Crack Growth in Bridge Steel Welds, International Journal of Fatigue

   , doi:10.1016/j.ijfatigue.2018.03.015.
1. Liu, Y. Zhu, C. Oskay, P. Hu, L. Ying and D. Wang, 

   Experimental and Computational Study of Microstructural Effect on Ductile Fracture of Hot-Forming Materials, Materials Science and Engineering: A

   , doi:10.1016/j.msea.2018.03.049.
1. Fischbacher, A. Kovacs, M. Gusenbauer, H. Oezelt, L. Exl, S. Bance and T. Schrefl, 

   Micromagnetics of rare-earth efficient permanent magnets, Journal of Physics D: Applied Physics

   , doi:10.1088/1361-6463/aab7d1.
• S.I. Ranganathan, M.R. Murshed and L. Costa, 

  Heterogeneous Anisotropy Index and scaling in two-phase random polycrystals, Acta Mechanica

  , doi:10.1007/s00707-018-2114-6.
1. Vidyasagar, A.D. Tutcuoglu and D.M. Kochmann, 

   Deformation patterning in finite-strain crystal plasticity by spectral homogenization with application to magnesium, Computer Methods in Applied Mechanics and Engineering

   , accepted.
1. Madivala, A. Schwedt, S.L. Wong, F. Roters, U. Prahl and W. Bleck, 

   Temperature dependent strain hardening and fracture behavior of TWIP steel, International Journal of Plasticity

   , doi:10.1016/j.ijplas.2018.02.001.
1. Johnson and C. Kurniawan, 

   An efficient algorithm for generating diverse microstructure sets and delineating properties closures, Acta Materialia

   , vol. 147, pp. 313-321, 2018.
1. Müller, T. Frühwirt, D. Haase, R. Schlegel and H. Konietzky, 

   Modeling deformation and damage of rock salt using the discrete element method, International Journal of Rock Mechanics and Mining Sciences

   , vol. 103, pp. 230-241, 2018.
1. Barba, E. Alabort, D. Garcia-Gonzalez, J.J. Moverare, R.C. Reed and A. Jérusalem, 

   A thermodynamically consistent constitutive model for diffusion-assisted plasticity in Ni-based superalloys, International Journal of Plasticity

   , doi:10.1016/j.ijplas.2017.12.007.
1. Ryzy, T. Grabec, P. Sedlak and I.A. Veres, 

   Influence of grain morphology on ultrasonic wave attenuation in polycrystalline media with statistically equiaxed grains, The Journal of the Acoustical Society of America

   , vol. 143, pp. 219-229, 2018.
1. Quey and L. Renversade, 

   Optimal polyhedral description of 3D polycrystals: method and application to statistical and synchrotron X-ray diffraction data, Computer Methods in Applied Mechanics and Engineering

   , vol. 330, pp. 308-333, 2018.
1. Liu, H. Xu, D. Wang, C. Wang, C. Schulze and M. Oeser, 

   Comparison of mechanical responses of asphalt mixtures manufactured by different compaction methods, Construction and Building Materials

   , vol. 162, pp. 765-780, 2018.
1. Benedetti, V. Gulizzi and A. Milazzo, 

   Grain-boundary modelling of hydrogen assisted intergranular stress corrosion cracking, Mechanics of Materials

   , doi:10.1016/j.mechmat.2017.11.001.
1. Ekh, N. Larijani, E. Dartfeldt, M. Kapp and R. Pippan, 

   Prediction of the mechanical behaviour of pearlitic steel based on microcompression tests, micromechanical models and homogenization approaches, European Journal of Mechanics - A/Solids

   , vol. 67, pp. 272-279, 2018.
1. Liu, L. Li, G. Dirras, K. Ameyama, F. Cazes and M. Ota, 

   A three-dimensional multi-scale polycrystalline plasticity model coupled with damage for pure Ti with harmonic structure design, International Journal of Plasticity

   , vol. 100, 192-207, 2018.
1. Zhang, G.A. Gazonas and F. Bobaru, 

   Supershear damage propagation and sub-Rayleigh crack growth from edge-on impact: a peridynamic analysis, International Journal of Impact Engineering

   , doi://10.1016/j.ijimpeng.2017.11.010.

2017

1. Zhang and C. Oskay, 

   Material and morphology parameter sensitivity analysis in particulate composite materials, Computational Mechanics

   , doi://10.1007/s00466-017-1512-2.
1. Xi, G. Fang and S. Xu, 

   Multiscale mechanical behavior and microstructure evolution of extruded magnesium alloy sheets: Experimental and crystal plasticity analysis, Materials Characterization

   , doi:10.1016/j.matchar.2017.11.034.
1. Hu, S. Jiang, Y. Zhang and D. Sun, 

   Crystal Plasticity Finite Element Simulation of NiTi Shape Memory Alloy Based on Representative Volume Element, Metals and Materials International

   , vol. 23, pp. 1075-1086, 2017.
1. Fischbacher, A. Kovacs, H. Oezelt, M. Gusenbauer, D. Suess and T. Schrefl, 

   Effective uniaxial anisotropy in easy-plane materials through nanostructuring, Applied Physics Letters

   , doi:10.1063/1.4997816.
1. Chandra, M.K. Samal, V.M. Chavan and S. Raghunathan, 

   Hierarchical multiscale modeling of plasticity in copper: From single crystals to polycrystalline aggregates, International Journal of Plasticity

   , doi://10.1016/j.ijplas.2017.10.014.
1. Rescka, L. Munk, P. Wriggers and H.J. Maier, 

   An EBSD Evaluation of the Microstructure of Crept Nimonic 101 for the Validation of a Polycrystal-Plasticity Model, Journal of Materials Eigineering and Performance

   , doi:10.1007/s11665-017-3046-3.
1. Morris Wang, T. Voisin, J.T. McKeown, J. Ye, N.P. Calta, Z. Li, Z. Zeng, Y. Zhang, W. Chen, T. Tran Roehling, R.T. Ott, M.K. Santala, P.J. Depond, M.J. Matthews, A.V. Hamza and T. Zhun, 

   Additively manufactured hierarchical stainless steels with high strength and ductility, Nature Materials

   , doi:10.1038/NMAT5021.
1. Li, J. Li, B. Tang, J. Fan and H. Yuan, 

   Simulation of intergranular ductile cracking in beta titanium alloys based on a micro-mechanical damage model, Materials

   , vol. 10, pp. 1250, 2017.
1. Hu, S. Jiang, T. Zhou, J. Ti, L. Shi, Q. Chen and M. Yang, 

   Multiscale Modeling of Polycrystalline NiTi Shape Memory Alloy under Various Plastic Deformation Conditions by Coupling Microstructure Evolution and Macroscopic Mechanical Response, Materials

   , vol. 10, pp. 1172, 2017.
1. Hu, S. Jiang, Y. Zhang, X. Zhu and D. Sun, 

   Influence of slip system combination models on crystal plasticity finite element simulation of NiTi shape memory alloy undergoing uniaxial compression, Progress in Natural Science: Materials International

   , doi:10.1016/j.pnsc.2017.08.017.
1. Khadyko, C.D. Marioara, S. Dumoulin, T. Borvik and O.S. Hopperstad, 

   Effects of heat-treatment on the plastic anisotropy of extruded aluminium AA6063, Materials Science and Engineering A

   , vol. 708, pp. 208-221, 2017.
1. Ayed, C. Robert, G. Germain and A. Ammar, 

   Orthogonal micro-cutting modeling of the Ti17 titanium alloy using the crystal plasticity theory, Finite Elements in Analysis and Design

   , vol. 137, pp. 43-55, 2017.
1. Vijay, N. Paulson and F. Sadeghi, 

   A 3D Finite Element Modelling of Crystalline Anisotropy in Rolling Contact Fatigue, International Journal of Fatigue

   , doi:10.1016/j.ijfatigue.2017.09.016.
1. Sledzinska, R. Quey, B. Mortazavi, B. Graczykowski, M. Placidi, D. Saleta Reig, D. Navarro Urrios, F. Alzina, L. Colombo, S. Roche and C.M. Sotomayor Torres, 

   Record Low Thermal Conductivity of Polycrystalline MoS2 films: Tuning the Thermal Conductivity by Grain Orientation, ACS Applied Materials & Interfaces

   , vol. 9, pp. 37905-37911, 2017.
• N.Y. Juul, J. Oddershede, A. Beaudoin, K. Chatterjee, M.K.A. Koker, D. Dale, P. Shade and G. Winther, 

  Measured resolved shear stresses and Bishop-Hill stress states in individual grains of austenitic stainless steel, Acta Materialia

  , doi:10.1016/j.actamat.2017.09.021.
1. Guo, C. Sun, M. Fu and M. Han, 

   Misorientation-Dependent Twinning Induced Hardening and Texture Evolution of TWIP Steel Sheet in Plastic Deformation Process, Metals

   , pp. 348, vol. 7, 2017.
1. Zhao, L. Lv, G. Liu and K. Wang, 

   Analysis of deformation inhomogeneity and slip mode of TA15 titanium alloy sheets during the hot tensile process based on crystal plasticity model, Materials Science and Engineering A

   , doi:10.1016/j.msea.2017.08.094, 2017.
1. Barrera, A. Cocks and A. Ponter, 

   Advances in Direct Methods for Materials and Structures, Springer

   , ISBN : 3319598104, 9783319598109, 217 pages, 2017.
1. Magisano, E. Charkaluk, G. de Saxcé and T. Kanit, 

   Shakedown Within Polycrystals: A Direct Numerical Assessment, Advances in Direct Methods for Materials and Structure

   , pp. 29-50, 2017.
1. Chatterjee, J.Y.P. Ko, J.T. Weiss, H.T. Philipp, J. Becker, P. Purohit, S.M. Gruner and A.J. Beaudoin, 

   Study of residual stresses in Ti-7Al using theory and experiments, Journal of the Mechanics and Physics of Solids

   , vol. 109, pp. 95-116, 2017.
1. Yuan, W. Zhang, J. Kim and Y. Liu, 

   A Nonlinear Grain-based Fatigue Damage Model for Civil Infrastructure under Variable Amplitude Loads, International Journal of Fatigue

   , doi:10.1016/j.ijfatigue.2017.07.026, 2017.
1. Guyon, J.Y. Delenne and F. Radjai, 

   Matière en grains, book edited by Odile Jacob

   , ISBN : 978-2-7381-3709-8, 2017.
1. Kasemer, M.P. Echlin, J.C. Stinville, T.M. Pollock and P. Dawson, 

   On slip initiation in equiaxed alpha/beta Ti-6Al-4V, Acta Materialia

   , doi:10.1016/j.actamat.2017.06.059, 2017.
1. Charles, H.T. Nguyen and M. Gaspérini, 

   Comparison of hydrogen transport through pre-deformed synthetic polycrystals and homogeneous samples by finite element analysis, International Journal of Hydrogen Energy

   , doi:10.1016/j.ijhydene.2017.06.016, 2017.
1. El Shawish and L. Cizelj, 

   Combining Single- and Poly-Crystalline Measurements for Identification of Crystal Plasticity Parameters: Application to Austenitic Stainless Steel, Crystals

   , vol. 7, doi:10.3390/cryst7060181, 2017.
• P.J. Zhao, Z.H. Chen and C.F. Dong, 

  Investigation and prediction of tearing failure during extrusion based on a modified shear damage model, Mechanics of Materials

  , doi:10.1016/j.mechmat.2017.05.008, 2017.
1. Natarajan, E.T. Ooi, A. Saputra and C. Song, 

   A scaled boundary finite element formulation over arbitrary faceted star convex polyhedra, Engineering Analysis with Boundary Elements

   , pp. 218-229, vol. 80, 2017.
1. Carson, M. Obstalecki, M. Miller and P. Dawson, 

   Characterizing Heterogeneous Intragranular Deformations in Polycrystalline Solids Using Diffraction-Based and Mechanics-Based Metrics, Modelling and Simulation in Materials Science and Engineering

   , vol. 25, pp. 055008, 2017. 

   made cover of the Journal

1. Fischbacher, A. Kovacs, H. Oezelt, T. Schrefl, L. Exl, J. Fidler, D. Suess, N. Sakuma, M. Yano, A. Kato, T. Shoji, and A. Manabe, 

   Nonlinear conjugate gradient methods in micromagnetics, AIP Advances

   , vol. 7, pp. 045310, 2017.
1. Petersmann, T. Antretter, T. Waitz and F.D. Fischer, 

   A new approach predicting the evolution of laminated nanostructures–martensite in NiTi as an example, Modelling and Simulation in Materials Science and Engineering

   , vol. 25, pp. 035004, 2017.
1. Ma and T. Zhu, 

   Towards strength–ductility synergy through the design of heterogeneous nanostructures in metals, Materials Today

   , vol. 7, pp. 67–76, 2017.
1. Kasemer, R. Quey and P. Dawson, 

   The Influence of Mechanical Constraints Introduced by beta Annealed Microstructures on the Yield Strength and Ductility of Ti-6Al-4V, Journal of the Mechanics and Physics of Solids

   , accepted.
• V.P. Nguyen, C.T. Nguyen, T. Rabczuk and S. Natarajan, 

  On a family of convected particle domain interpolations in the material point method, Finite Elements in Analysis and Design

  , vol. 126, pp. 50-64, 2017.
1. Zhang, W. Xu, C. Liu, X. Ma and J. Long, 

   Quantitative analysis of surface roughness evolution in FCC polycrystalline metal during uniaxial tension, Computational Materials Science

   , vol. 132, pp. 19-29, 2017.
1. Wang and P. Li, 

   Voronoi cell finite element modelling of the intergranular fracture mechanism in polycrystalline alumina, Ceramics International

   , doi:10.1016/j.ceramint.2017.02.121, 2017.
• M.R. Kabir and H. Richter, 

  Modeling of Processing-Induced Pore Morphology in an Additively-Manufactured Ti-6Al-4V Alloy, Materials

  , vol. 10, p. 35, 2017.
1. Mortazavi, R. Quey, H. Ostadhossein, A. Villani, N. Moulin, A.C.T. Van Duin, and T. Rabczuk, 

   Strong thermal transport along polycrystalline transition metal dichalcogenides revealed by multiscale modelling for MoS2, Applied Materials Today

   , vol. 7, pp. 67-76, 2017.
• M.R. Murshed and S.I. Ranganathan, 

  Hill-Mandel condition and bounds on lower symmetry elastic crystals, Mechanics Research Communications

  , vol. 81, pp. 7-10, 2017.
1. Wielewski, D.E. Boyce, J.-S. Park, M.P. Miller and P.R. Dawson, 

   A methodology to determine the elastic moduli of crystals by matching experimental and simulated lattice strain pole figures using discrete harmonics, Acta Materialia

   , vol. 126, pp. 469-480, 2017.
• M.R. Murshed and S.I. Ranganathan, 

  Scaling laws in elastic polycrystals with individual grains belonging to any crystal class, Acta Mechanica

  , doi:10.1007/s00707-016-1774-3.
1. Oezelt, E. Kirk, P. Wohlhuter, E. Muller, L.J. Heyderman, A. Kovacs and T. Schrefl, 

   Vortex motion in amorphous ferrimagnetic thin film elements, AIP Advances

   , vol. 7, 056001, 2017.
1. Gupta, A.J. Beaudoin and J. Chevy, 

   Strain rate jump induced negative strain rate sensitivity (NSRS) in aluminum alloy 2024: Experiments and constitutive modeling, Materials Science and Engineering A

   , vol. 683, pp. 143-152, 2017.
1. Lv, H. Li, X. Zhu and W. Liu, 

   Discrete element method simulation of random grain-based models, Cluster Computing

   , doi:10.1007/s10586-016-0705-3.
• C.H. Pham, S. Thuillier and P.-Y. Manach, 

  Prediction of flow stress and surface roughness of stainless steel sheets considering an inhomogeneous microstructure, Materials Science & Engineering A

  , vol. 678, pp. 377-388, 2017.
1. Toifl, P. Hartlieb, R. Meisels, T. Antretter and F. Kuchar, 

   Numerical study of the influence of irradiation parameters on the microwave-induced stresses in granite, Minerals Engineering

   , vol. 103-104, pp. 78-92, 2017.
1. Adzima, T. Balan, P.Y. Manach, N. Bonnet and L. Tabourot, 

   Crystal plasticity and phenomenological approaches for the simulation of deformation behavior in thin copper alloy sheets, International Journal of Plasticity

   , doi:10.1016/j.ijplas.2016.06.003.

2016

1. Van Pamel, G. Sha, S.I. Rokhlin and M.J.S. Lowe, 

   Finite element modelling of elastic wave propagation and scaterring within heterogeneous media, Mathematical, Physical and Engineering Sciences

   , vol. 473, 20160738, 2016.
1. Lhoutellier, D. Ledue, R. Patte and V. Baltz, 

   Monte Carlo investigation of how interfacial magnetic couplings affect blocking temperature distributions in exchange bias bilayers, Jounal of Applied Physics

   , vol. 120, pp. 193902, 2016.
1. Zouaghi, V. Velay, A. Soveja, T. Pottier, M. Cheikh and F. Rézai-Aria, 

   A multi-scale approach to investigate the non linear subsurface behavior and strain localization of X38CrMoV5-1 martensitic tool steel: experiment and numerical analysis, International Journal of Plasticity

   , vol. 87, pp. 130-153, 2016.
1. Beese, S. Loehnert and P. Wriggers, 

   Modeling of Fracture in Polycrystalline Materials

   , Chapter in 

   Advances in Discretization Methods

   , SEMA SIMAI Springer Series.
1. Sledzinska, B. Graczykowski, M. Placidi, D. Saleta Reig, A. El Sachat, J.S. Reparaz, F. Alzina, B. Mortazavi, R. Quey, L. Colombo, S. Roche and C.M. Sotomayor Torres, 

   Thermal conductivity of MoS2 polycrystalline nanomembranes, 2D Materials

   , vol. 3, p. 035016, 2016.
1. Cantor, E. Azéma, P. Sonnay and F. Radjai, 

   Three-dimensional bonded-cell model for grain fragmentation, Computational Particle Mechanics

   , doi:10.1007/s40571-016-0129-0.
1. Khadyko, S. Dumoulin and O.S. Hopperstad, 

   Texture gradients and strain localisation in extruded aluminium profile, International Journal of Solids and Structures

   , vol. 97-98, pp. 239-255, 2016.
1. Liu, Y. Shen, J. Ma, P. Zheng and L. Zhang, 

   Grain Size Dependence of Uniform Elongation in Single-Phase FCC/BCC Metals, Journal of Materials Engineering and Performance, 25: 3599, 2016.

1. Benedetti, V. Gulizzi and V. Mallardo, 

   A grain boundary formulation for crystal plasticity, International Journal of Plasticity

   , vol. 83, pp. 202-224, 2016.
1. Wei, C. Dong, Z. Chen K. Xiao and X. Li, 

   The effect of hydrogen on the evolution of intergranular cracking: a cross-scale study using first-principles and cohesive finite element methods, RSC Advances

   , vol. 6, pp. 27282-27292, 2016.
1. Sadowski and B. Pankowski, 

   Numerical Modelling of Two-phase Ceramic Composite Response under Uniaxial Loading, Composite Structures

   , vol. 143, pp/ 388-394, 2016.
1. Baudoin, V. Magnier, A. El Bartali, J.-F. Witz, Ph. Dufrenoy, F. Demilly and E. Charkaluk, 

   Numerical investigation of fatigue strength of grain size gradient materials under heterogeneous stress states in a notched specimen, International Journal of Fatigue

   , vol. 87, pp. 132-142, 2016.
1. Svenning, M. Fagerström and F. Larsson, 

   On computational homogenization of microscale crack propagation, International Journal for Numerical Methods in Engineering

   , vol. 108, pp. 76-90, 2016.
1. Toifl, R. Meisels, P. Hartlieb, F. Kuchar and Th. Antretter, 

   3D numerical study on microwave induced stresses in inhomogeneous hard rocks, Minerals Engineering

   , vol. 90, pp. 29-42, 2016.
1. Brommesson, M. Ekh and C. Joseph, 

   3D grain structure modelling of intragranular fracture in forged Haynes 282, Engineering Fracture Mechanics

   , vol. 154, pp. 57-71, 2016.
1. Auger, S. Hémery, M. Bourcier, C. Berdin, M. Martin and I. Robertson, 

   Crack path in liquid metal embrittlement: experiments with steels and modeling, Fracture and Structural Integrity

   , vol. 35, pp. 250-259, 2016.
1. El Shawish and L. Cizelj, 

   Numerical investigation of grain misorientations at and close to the free surface of FCC polycrystalline metals, Computational Materials Science

   , vol. 113, pp. 133-142, 2016.
1. Renner, Y. Gaillard, F. Richard, F. Amiot and P. Delobelle, 

   Sensitivity of the residual topography to single crystal plasticity parameters in Berkovich nanoindentation on FCC nickel, International Journal of Plasticity

   , vol. 77, pp. 118-140, 2016.
• J.V. Beeck, F. Maresca, T.W.J. de Geus, P.J.G. Schreurs and M.G.D. Geers, 

  Predicting deformation-induced polymer-steel interface roughening and failure, European Journal of Mechanics / A Solids

  , vol. 55, pp. 1-11, 2016.

2015

1. Quey, J.H. Driver and P.R. Dawson. 

   Intra-grain orientation distributions in hot-deformed aluminium: Orientation dependence and relation to deformation mechanisms, Journal of the Mechanics and Physics of Solids

   , vol. 84, pp. 506-527, 2015.
1. Zhang, Z.H. Chen and C.F. Dong, 

   Simulating Intergranular Stress Corrosion Cracking in AZ31 Using Three-Dimensional Cohesive Elements for Grain Structure, Journal of Materials Engineering and Performance

   , vol. 24, pp. 4908-4918, 2015
1. Van Pamel, C.R. Brett, P. Huthwaite and M.J.S. Lowe, 

   Finite element modelling of elastic wave scattering within a polycrystalline material in two and three dimensions, Journal of the Acoustical Society of America

   , vol. 138, pp. 2326-2336, 2015.
1. Gulizzi, A. Milazzo and I. Benedetti, 

   An enhanced grain-boundary framework for computational homogenization and micro-cracking simulations of polycrystalline materials, Computational Mechanics

   , DOI 10.1007/s00466-015-1192-8.
1. Cruzadoa, B. Gana, M. Jiméneza, D. Barbaa, K. Ostolazab, A. Linazab, J.M. Molina-Aldareguiaa, J. Llorcaa and J. Segurado, 

   Multiscale modeling of the mechanical behavior of IN718 superalloy based on micropillar compression and computational homogenization , Acta Materialia

   , vol. 98, pp. 242-253, 2015.
1. Svenning, 

   On computational homogenization of fracturing continua , Licentiate Thesis

   , Chalmers Univeristy of Technology, 2015.
1. Zhang, W. Xu, J. Long and Z. Lei, 

   Surface Roughening Analysis of Cold Drawn Tube Based on Macro-micro Coupling Finite Element Method, Journal of Materials Processing Technology

   , vol. 224, pp. 189-199, 2015.
• S.L. Wong, M. Obstalecki, M.P. Miller and P.R. Dawson, 

  Stress and deformation heterogeneity in individual grains within polycrystals subjected to fully reversed cyclic loading, Journal of the Mechanics and Physics of Solids

  , vol. 79, pp. 157-185, 2015.
1. Oezelt, A. Kovacs, F. Reichel, J. Fischbacher, S. Bance, M. Gusenbauer, C. Schubert, M. Albrecht and T. Schrefl, 

   Micromagnetic simulation of exchange coupled ferri-/ferromagnetic heterostructures, Journal of Magnetism and Magnetic Materials

   , vol. 381, pp. 28-33, 2015.
1. Lhoutellier, D. Ledue, R. Patte, F. Barbe, B. Dierny and V. Baltz, 

   Bimodal distribution of blocking temperature for exchange-bias ferromagnetic/antiferromagnetic bilayers: a granular Monte Carlo study with less stable magnetic regions spread over the interface, Journal of Physics D: Applied Physics, 2015.

• L.-T. Li, Y.C. Lin, L. Li, L.-M. Shen and D.-X. Wen, 

  Three-Dimensional Crystal Plasticity Finite Element Simulation of Hot Compressive Deformation Behaviors of 7075 Al Alloy, Journal of Materials Engineering and Performance

  , vol. 24, pp. 1294-1304, 2015.
1. Oezelt, A. Kovacs, P. Wohlhüter, E. Kirk, D. Nissen, P. Matthes, L.J. Heyderman, M. Albrecht and T. Schrefl, 

   Micromagnetic simulation of exchange coupled ferri-/ferromagnetic composite in bit patterned media, Journal of Applied Physics

   , vol. 117, 17E501, 2015.

2014

• M.P. Miller and P.R. Dawson, 

  Understanding local deformation in metallic polycrystals using high energy X-rays and finite elements, Current Opinion in Solid State and Materials Science

  , vol. 18, pp. 286-299, 2014.
1. Acerboa, M. Miller and J. Ruffc, 

   2014 CHESS Users’ Meeting and Workshops, Synchrotron Radiation News

   , vol. 27, pp. 21-24, 2014.
1. Ghazvinian, M.S. Diederichs and R. Quey, 

   3D random Voronoi grain-based models for simulation of brittle rock damage and fabric-guided micro-fracturing, Journal of Rock Mechanics and Geotechnical Engineering

   , vol. 6, pp. 506-521, 2014.
1. Zhang, B. Holmedal, O.S. Hopperstad and S. Dumoulin, 

   Modelling the plastic anisotropy of aluminum alloy 3103 sheets by polycrystal plasticity, Modelling and Simulation in Materials Science and Engineering

   , vol. 22, pp. 75015-75034, 2014.
1. Falco, P. Siegkas, E. Barbieri and N. Petrinic, 

   A new method for the generation of arbitrarily shaped 3D random polycrystalline domains, Computational Mechanics

   , vol. 54, pp. 1447-1460, 2014.
1. Lacaille, C. Morel, E. Feulvarch and G. Kermouche, 

   Finite element analysis of the grain size effect on diffusion in polycrystalline materials, Computational Materials Science

   , vol. 95, pp. 187-191, 2014.
• D.L. Cortie, A.G. Biternas, R.W. Chantrell, X.L. Wang and F. Klose, 

  Microscopic model for exchange bias from grain-boundary disorder in a ferromagnet/antiferromagnet thin film with a nanocrystalline microstructure, Applied Physics Letters

  , vol. 105, 032402, 2014.
1. Ledue, A. Maitre, F. Barbe and L. Lechevallier, 

   Temperature dependence of the exchange bias properties of ferromagnetic/antiferromagnetic polycrystalline bilayers,Journal of Magnetism and Magnetic Materials

   , vol. 372, pp. 134-140, 2014.
1. Deng, D. Morgan and I. Szlufarska, 

   Kinetic Monte Carlo simulation of the effective diffusivity in grain boundary networks, Computational Materials Science

   , vol 93, pp. 36-45, 2014.
1. Obstalecki, S.L. Wong, P.R. Dawson and M.P. Miller, 

   Quantitative analysis of crystal scale deformation heterogeneity during cyclic plasticity using high-energy X-ray diffraction and finite-element simulation, Acta Materialia

   , vol. 75, pp. 259-272, 2014.
1. Li, L. Shen and G. Proust, 

   A texture-based representative volume element crystal plasticity model for predicting Bauschinger effect during cyclic loading, Materials Science and Engineering A

   , vol. 608, pp. 174-183, 2014.
1. Zang, B. Holmedal, O.S. Hopperstad, S. Dumoulin, J. Gawad, A. Van Bael and P. Van Houtte, 

   Multi-level Modelling of Mechanical Anisotropy of Commercial Pure Aluminium Plate: Crystal Plasticity Models, Advanced Yield Functions and Parameter Identification, International Journal of Plasticity

   , vol. 66, pp. 3-30, 2015.
1. Gonzalez, I. Simonovski, P.J. Withers and J. Quinta da Fonseca, 

   Modelling the effect of elastic and plastic anisotropies on stresses at grain boundaries, International Journal of Plasticity

   , vol. 61, pp. 49-63, 2014.

2013

1. Fernández, A. Jérusalem, I. Gutiérrez-Urrutia and M.T. Pérez-Prado, 

   Three-dimensional investigation of grain boundary-twin interactions in a Mg AZ31 alloy by electron backscatter diffraction and continuum modeling, Acta Materialia

   , vol. 61, pp. 7679-7692, 2013
• S.L. Wong, J.-S. Park, M. P. Miller and P. R. Dawson, 

  A framework for generating synthetic diffraction images from deforming polycrystals using crystal-based finite element formulations, Computational Materials Science

  , vol. 77, pp. 456-466, 2013.
1. Li, L. Shen, G. Proust, Ch. K.S. Moy and G. Ranzi, 

   Three-dimensional crystal plasticity finite element simulation of nanoindentation on aluminium alloy 2024, Materials Science and Engineering: A

   , vol. 579, pp. 41-49, 2013.

2012

1. Montalvo-Urquizo, P. Bobrov, A. Schmidt and W. Wosniok, 

   Elastic responses of texturized microscale materials using FEM simulations and stochastic material properties, Mechanics of Materials

   , vol. 47, pp. 1-10, 2012.
• C.N. N’Guyen , F. Barbe, N. Osipov, G. Cailletaud, B. Marini and C. Petry, 

  Micromechanical local approach to brittle failure in bainite high resolution polycrystals: a short presentation, Computational Material Science

  , vol. 64, pp. 62-65, 2012.
1. Maitre, D. Ledue, F. Barbe, R. Patte, 

   Temperature effect in polycrystalline exchange-biased bilayers: A Monte Carlo study, Journal of Applied Physics

   , vol. 111, 07D105, 2012.
1. Quey, P.R. Dawson and J.H. Driver, 

   Orientation fragmentation in hot-deformed polycrystalline aluminium: Experiment and simulation, Journal of the Mechanics and Physics of Solids

   , vol. 60, pp. 509-524, 2012.
1. Tahimi, F. Barbe, L. Taleb, R. Quey and A. Guillet, 

   Evaluation of microstructure-based transformation plasticity models from experiments on 100C6 steel, Computational Materials Science

   , vol. 52, pp. 55-60, 2012.

2011

1. Quey, P.R. Dawson and F. Barbe, 

   Large-scale 3D random polycrystals for the finite element method: Generation, meshing and remeshing, Computer Methods in Applied Mechanics and Engineering

   , vol. 200, pp. 1729-1745, 2011.
1. Barbe and R. Quey, 

   A numerical modelling of 3D polycrystal-to-polycrystal diffusive phase transformations involving crystal plasticity, International Journal of Plasticity

   , vol. 27, pp. 823-840, 2011.

2009

1. Barbe, R. Quey, A. Musienko and G. Cailletaud, 

   Three-dimensional characterization of strain localization bands in high-resolution elastoplastic polycrystals, Mechanics Research Communications

   , vol. 39, pp. 762-768, 2009.

2008

1. Hoang, F. Barbe, R. Quey and L. Taleb, 

   FE determination of the plasticity induced during diffusive transformation in the case of nucleation at random locations and instants, Computational Materials Science

   , vol. 43, pp. 101-107, 2008.
1. Barbe, R. Quey, L. Taleb and E. Souza de Cursi, 

   Numerical modelling of the plasticity induced during diffusive transformation. An ensemble averaging approach for the case of random arrays of nuclei, European Journal of Mechanics, A/Solids

   , vol. 27, pp. 1121-1139, 2008.

2007

1. Barbe, R. Quey and L. Taleb. 

   Numerical modelling of the plasticity induced during diffusive transformation. Case of a cubic array of nuclei, European Journal of Mechanics, A/Solids

   , vol. 26, pp. 611-625, 2007.

下载：

Downloads

Neper is distributed as a free / open-source software, under the terms of the  GNU General Public License (GPL)     . In short, this means that everyone is free to use Neper and to redistribute it on a free basis. Neper is not in the public domain; it is copyrighted and there are restrictions on its distribution (see the  license      and the related  FAQ).

It you use Neper, please cite the Neper reference paper in your work (books, papers, talks, ...): R. Quey, P.R. Dawson and F. Barbe, Large-scale 3D random polycrystals for the finite element method: Generation, meshing and remeshing, Computer Methods in Applied Mechanics and Engineering, vol. 200, pp. 1729-1745, 2011. The paper is available for download below.

Current stable release

• neper-3.3.0.tgz (25 Jul 2018)

  : source code and documentation

• neper.pdf

  : documentation

Development repository

A development repository is hosted on GitHub:  http://github.com/rquey/neper     . It provides the development version. Code contributions to be included in the official (public) version of Neper should be submitted as pull requests.

Supplementary software

• Dependencies: 

  GSL, libmatheval, Gmsh, libScotch, POV-Ray

• All versions of Neper can be accessed 

  here.

References

• Romain Quey, Paul Dawson and Fabrice Barbe, Large-scale 3D random polycrystals for the finite element method: Generation, meshing and remeshing, Comput. Methods Appl. Mech. Engrg., vol. 200, pp. 1729-1745, 2011: 

  paper

• Romain Quey and Loïc Renversade, Optimal polyhedral description of 3D polycrystals: Method and application to statistical and synchrotron X-ray diffraction data, Comput. Methods Appl. Mech. Engrg., vol. 330, pp. 308-333, 2018: 

  postprint link

• Romain Quey, Aurelien Villani and Claire Maurice, Nearly uniform sampling of crystal orientations. J. Appl. Crystallogr., vol. 51, pp. 1162-1173, 2018. 

  reprint link

Mailing lists

There are two mailing lists for Neper, which you may find useful to subscribe to:

• neper-announce

  : the “read-only” list for important news: new releases, bug fixes, etc. (low traffic, highly recommended!).

• neper-users

  : the “read-write” list for users. Please send all questions, bug reports, requests or any errors or omissions in this manual to this list.