De la décomposition de domaine à la réduction de modèle pour les grandes structures non linéaires

Autor: Bertrand Leturcq, Patrick Le Tallec

Publikováno v: Comptes Rendus. Mécanique
Comptes Rendus. Mécanique, 2023, 351 (S1), pp.1-17. ⟨10.5802/crmeca.168⟩

International audience; The numerical simulation of multiscale and multiphysics problems requires efficient tools for spatial localization and model reduction. A general strategy combining Domain Decomposition and Nonuniform Transformation Field Anal

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ebeed952fad3acb7b7573bfa285fa651
https://cea.hal.science/cea-04149398

Multipatch isogeometric mortar methods for thick shells

Autor: Malek Zarroug, Nicolas Adam, Patrick Le Tallec

Publikováno v: Computer Methods in Applied Mechanics and Engineering
Computer Methods in Applied Mechanics and Engineering, Elsevier, 2020, 372, pp.113403. ⟨10.1016/j.cma.2020.113403⟩
Computer Methods in Applied Mechanics and Engineering, 2020, 372, pp.113403. ⟨10.1016/j.cma.2020.113403⟩

International audience; This paper introduces, analyzes and validates isogeometric mortar methods for the solution of thick shells problems which are set on a multipatch geometry. A particular attention will be devoted to the introduction of a proper

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::203399af4c752e83a6a7ea9c1e6c162f
https://hal.archives-ouvertes.fr/hal-03088221/file/Article_Multi-patch_V7.pdf

A Statistical Framework for Generating Microstructures of Two-Phase Random Materials: Application to Fatigue Analysis

Autor: Barbara Wohlmuth, Andrei Constantinescu, J. Tinsley Oden, Patrick Le Tallec, Ustim Khristenko

Publikováno v: Multiscale Modeling and Simulation: A SIAM Interdisciplinary Journal
Multiscale Modeling and Simulation: A SIAM Interdisciplinary Journal, 2020, 18 (1), pp.21-43. ⟨10.1137/19M1259286⟩
Multiscale Modeling and Simulation: A SIAM Interdisciplinary Journal, Society for Industrial and Applied Mathematics, 2020, 18 (1), pp.21-43. ⟨10.1137/19M1259286⟩

International audience; Random microstructures of heterogeneous materials play a crucial role in the material macroscopic behavior and in predictions of its effective properties. A common approach to modeling random multiphase materials is to develop

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::48cce574b998734635a2ade95cdb042d
https://hal.science/hal-02447357/document

Conservative and entropy controlled remap for multi-material ALE simulations with space-staggered schemes

Autor: Alexandra Claisse, Patrick Le Tallec, Alexis Marbœuf

Publikováno v: Journal of Computational Physics
Journal of Computational Physics, Elsevier, 2019, 390, pp.66-92. ⟨10.1016/j.jcp.2019.04.017⟩
Journal of Computational Physics, 2019, 390, pp.66-92. ⟨10.1016/j.jcp.2019.04.017⟩

International audience; The remapping strategy is crucial in any Arbitrary Lagrangian-Eulerian (ALE) algorithm based on a Lagrange-plus-remap paradigm. This step is particularly challenging for space-staggered schemes since inconsistencies may appear

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::621416d415683ed039a8ea5a9e26a533
https://hal.archives-ouvertes.fr/hal-02421917/file/S0021999119302505.pdf

Delayed feedback control method for computing the cyclic steady states of evolution problems

Autor: Patrick Le Tallec, Ustim Khristenko

Publikováno v: Computer Methods in Applied Mechanics and Engineering
Computer Methods in Applied Mechanics and Engineering, Elsevier, 2018, 338, pp.241-274. ⟨10.1016/j.cma.2018.04.015⟩
Computer Methods in Applied Mechanics and Engineering, 2018, 338, pp.241-274. ⟨10.1016/j.cma.2018.04.015⟩

This work is focused on fast techniques for computing the cyclic steady states of evolution problems in non-linear mechanics with space–time periodicity conditions. In industrial applications, in order to avoid the inversion of very large matrices,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::504fe0f6437f602751761cbcd1fe2997
https://hal.archives-ouvertes.fr/hal-01819125