Grégory Legrain
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gregory-legrain
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0000-0002-1780-6655
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119066238
- ResearcherID : C-1959-2008
Présentation
Thèmes de recherche - Partition of Unity Methods / X-FEM Formation
- High Order Finite Element Methods
- Fictitious Domain Methods
- Nonlinear Fracture Mechanics
- Damage Mechanics
- Image-Based Analysis
- Numerical Homogenization
- Model Order Reduction
- Habilitation à Diriger des Recherches, 2017
- Docteur de l'Ecole Centrale de Nantes, 2006
- DEA Génie Mécanique option calcul de structures, Ecole Centrale de Nantes, 2003
- Agrégé de mécanique, 2002
- Ancien élève de l'Ecole Normale Supérieure de Paris Saclay, 1999-2003
Publications
Publications
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Approches numériques innovantes pour l’endommagement, la rupture et les structures à géométrie complexeMécanique des structures [physics.class-ph]. Université de Nantes, 2017 |
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Extension de l'approche X-FEM aux grandes transformations pour la fissuration des milieux hyperélastiquesMatériaux. Ecole Centrale de Nantes (ECN); Université de Nantes, 2006. Français. ⟨NNT : ⟩ |
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Nitsche-XFEM for pressure jump interface condition in vibro-acoustic problems in presence of porous materials15e colloque national en calcul des structures, Université Polytechnique Hauts-de-France [UPHF], May 2022, Hyères-les-Palmiers, France |
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Règles de quadrature "moment-fitting" positives pour les approches de domaines fictifs15ème colloque national en calcul des structures, Université Polytechnique Hauts-de-France [UPHF], May 2022, 83400 Hyères-les-Palmiers, France |
On performances of the Thick Level Set method in 3D quasi-static fracture simulation of quasi-brittle materialCFRAC2017, Fifth International Conference on Computational Modeling of Fracture and Failure of Materials and Structures, Jun 2017, Nantes, France. pp.37-38 |
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Numerical simulation of large strain fracture problems using X-FEMFourth European Conference on Constitutive Models for Rubber, ECCMR 2005, Jun 2005, Stockholm, Sweden. pp.59-64, ⟨10.1201/9781315140216-10⟩ |
Contributions académiques à l'ANR ICAREConférence NAFEMS, Jun 2016, Paris, France |
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An efficient and accurate integration scheme for fictitious domain methods based on level-sets and anisotropic meshing13th U.S. National Congress on Computational Mechanics (USNCCM13), Jul 2015, San Diego, United States |
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Couplage plasticité, endommagement et rupture avec un modèle Thick Level SetCFM 2015 - 22e Congrès Français de Mécanique, Aug 2015, Lyon, France |
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Résolution de problèmes quasi-singuliers avec la méthode X-FEM12e Colloque national en calcul des structures, CSMA, May 2015, Giens, France |
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Modélisation et simulation numérique des structures en béton arméCFM 2015 - 22ème Congrès Français de Mécanique, Aug 2015, Lyon, France |
Resolution strategies for nearly singular solutions using non-conforming high-order gridsSixth International Workshop on High-Order Finite Element and Isogeometric Methods (HOFEIM 2014), Jul 2014, Frauenchiemsee Island, Germany |
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High-order X-FEM to handle geometrical details : Improved convergence for quasi-singular solutions11th World congress on computational mechanics, Jul 2014, Barcelona, Spain |
Estimation of effective thermal properties within heterogeneous periodic media according to a multi-scale approach. Edge effect analysisInternational Conference on Inverse Problems in Engineering, Nov 2014, Kyoto, Japan. ⟨10.1016/j.ijheatmasstransfer.2013.03.036⟩ |
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Approximation de faible rang de l'inverse d'un opérateur pour le pré-conditionnement de systèmes linéaires sur un espace produit tensoriel11e colloque national en calcul des structures, CSMA, May 2013, Giens, France |
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Hierarchical low-rank approximation of tensors by successive rank one corrections for preconditioning and solving high dimensional linear systems2nd ECCOMAS Young Investigators Conference (YIC 2013), Sep 2013, Bordeaux, France |
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Simulation non-conforme à partir de CAO : X-FEM et Nurbs11e colloque national en calcul des structures, CSMA, May 2013, Giens, France |
Characterization of the thermal properties of composite materials : a space-time homogenization approach16th annual ESAFORM Conference on Material Forming, Apr 2013, Aveiro, Portugal |
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Treatment of blunt corners with the X-FEMXFEM 2013, 2013, Lyon, France |
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An integrated approach for image-based computation based on the X-FEM: Accuracy and high-order approximationEuropean Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS 2012), Sep 2012, Vienne, Austria |
Tensor approximation methods for image-based computations.ECCOMAS, 2012, Vienne, Austria |
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High-order X-FEM for image-based computations6th EUROPEAN CONGRESS ON COMPUTATIONAL METHODS IN APPLIED SCIENCES AND ENGINEERING (ECCOMAS 2012), 2012, Vienna, Austria |
An X-FEM and level set approach for image-based computational homogenizationEuromech 537 - Multi-scale Computational Homogenization of Heterogeneous Structures and Materials, 2012, Marne-la-Vallée, France |
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Tensor approximation methods for multiscale stochastic analysis of materialsEuromech Colloquium 537, 2012, MArne-La-Vallée, France |
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Simulations de géométries complexes avec X-FEM et Level-Sets : Séparation de l'approximation et de la géométrie10e colloque national en calcul des structures, May 2011, Giens, France. pp.Clé USB |
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Méthode PGD pour l'homogénéisation numérique à partir d'images de haute résolution.10e colloque national en calcul des structures, May 2011, Giens, France. pp.Clé USB |
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Homogénéisation et prise en compte des effets de bords : Application à la thermiqueCFM 2011 - 20e Congrès Français de Mécanique, Aug 2011, Besançon, France |
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High order eXtended Finite Element Method and Level Sets: Uncoupling geometry and approximationInternational Conference on Extended Finite Element Methods - XFEM 2011, 2011, Cardiff, United Kingdom |
Comparison of two approaches for error estimation with X-FEMIV European Congress on Computational Mechanics (ECCM IV), 2010, Paris, France |
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Recent Advances in Material Homogenization13th ESAFORM Conference on Material Forming, 2010, Brechia, Italy. ⟨10.1007/s12289-010-0913-y⟩ |
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Nonlocal damage based failure models, extraction of crack opening and transition to fractureEURO-C 2010 - Computational Modelling of Concrete Structures, Mar 2010, Schladming, Austria. pp.301-308 |
Advanced Non-Linear Homogenization: Speeding-up Concurrent Simulations4th European Conference on Computational Mechanics, 2010, Paris, France |
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Nonlocal damage based failure models, extraction of crack opening and transition to fractureFraMCoS - 7, Jun 2010, Seogwipo, South Korea. pp.1-8 |
Comparison of two Computational Approaches for Image-Based Micromechanical ModelingIV European Congress on Computational Mechanics (ECCM IV), 2010, Paris, France |
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Application of the PGD to the Recursive Homogenization of Materials with random MicrostructuresJournées Annuelles de la Société Française de Métallurgie et de Matériaux, 2010, Paris, France |
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Modélisation numérique par une approche micromécanique du comportement de mousses solides alimentaires9e Colloque national en calcul des structures, CSMA, LMT, May 2009, Giens, France |
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Maillage adaptatif octree dans l'environnement X-FEM et level-sets - Application à la thermique9e Colloque national en calcul des structures, CSMA, LMT, May 2009, Giens, France |
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Robust and Direct Evaluation of J2 in Linear Elastic Fracture Mechanics with the X-FEMWCCM - Eccomas 2008, Jun 2008, Venice, Italy |
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Image-Based Computational Homogenization using Level Sets and X-FEM2nd International Fraunhofer Workshop -3D Imaging, Analysis, Modelling and Simulation of Macroscopic Properties, 2008, Kaiserslautern, Germany |
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Image-Based Computational Homogenization of Random Materials using Level Sets and X-FEM8th World Congress on Computational Mechanics (WCCM8), 5th European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS 2008), 2008, Venice, Italy |
Extraction of a crack opening from a non local damage field.Int. Conf. Comput. Plasticity, Sep 2007, Barcelone, Spain |
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Crack propagation in hyperelastic media using X-FEMCFRAC 2007 International Conference on Computational Fracture and Failure of Materials and Structures, 2007, Nantes, France |
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Mixed X-FEM formulation for incompressible problems10th ESAFORM conference on material forming, 2007, Zaragoza, Spain |
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Crack propagation with X-FEM using material forces6th European Solid Mechanics Conference (ESMC2006), 2006, Budapest, Hungary |
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Fissuration en grandes transformations avec X-FEM7e colloque national en calcul des structures, CSMA, May 2005, Giens, France |
Fracture with large deformation using X-FEMFourth European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS), 2004, Jyväskylä, Finland |
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Etude des forts gradients de contraintes en pointe de fissure dans un élastomèreJournée Thématique SF2M Ouest 2004, 2004, Ecole Centrale de Nantes, France |