Zobrazeno 1 - 10 of 11 pro vyhledávání: '"Augustin Parret-Fréaud"'
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Akademický článek
Graph Neural Networks for Mesh Generation and Adaptation in Structural and Fluid Mechanics
Autor: Ugo Pelissier, Augustin Parret-Fréaud, Felipe Bordeu, Youssef Mesri
Publikováno v: Mathematics, Vol 12, Iss 18, p 2933 (2024)
The finite element discretization of computational physics problems frequently involves the manual generation of an initial mesh and the application of adaptive mesh refinement (AMR). This approach is employed to selectively enhance the accuracy of r
Externí odkaz: https://doaj.org/article/ac49a10db7254f67a71917fcd7ff89b7
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2
Two-level substructuring and parallel mesh generation for domain decomposition methods
Autor: Christophe Bovet, Augustin Parret-Fréaud, Pierre Gosselet, Y. El Gharbi
Publikováno v: Finite Elements in Analysis and Design
Finite Elements in Analysis and Design, Elsevier, 2021, 192, ⟨10.1016/j.finel.2020.103484⟩
Finite Elements in Analysis and Design, 2021, 192, pp.103484. ⟨10.1016/j.finel.2020.103484⟩
Finite Elements in Analysis and Design, Elsevier, 2021, 192, pp.103484. ⟨10.1016/j.finel.2020.103484⟩
International audience; This paper presents a new parallel mesh generation method leading to subdomains of shape well-suited to Schur based domain decomposition methods such as the FETI and BDD solvers. Starting from a coarse mesh, subdomains meshes
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a4a04445785e85b1076dc29f179b107a
https://hal.archives-ouvertes.fr/hal-02881249v2/file/DMAS21008_preprint.pdf
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5
Adaptive multipreconditioned FETI: Scalability results and robustness assessment
Autor: Christophe Bovet, Augustin Parret-Fréaud, Nicole Spillane, Pierre Gosselet
Publikováno v: Computers and Structures
Computers and Structures, Elsevier, 2017, 193, pp.1-20. ⟨10.1016/j.compstruc.2017.07.010⟩
The purpose of this article is to assess the adaptive multipreconditioned FETI solvers (AMPFETI) on real industrial problems and hardware. The multipreconditioned FETI algorithm (first introduced as Simultaneous FETI (Gosselet et al., 2015) is a non-
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::865fa1561b2d7c1f4d9e39f802ea50dc
https://doi.org/10.1016/j.compstruc.2017.07.010
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6
Improved recovery of admissible stress in domain decomposition methods - application to heterogeneous structures and new error bounds for FETI-DP
Autor: Valentine Rey, Pierre Gosselet, Augustin Parret-Fréaud, Christian Rey
Publikováno v: International Journal for Numerical Methods in Engineering. 111:69-87
This paper investigates the question of the building of admissible stress field in a substruc-tured context. More precisely we analyze the special role played by multiple points. This study leads to (1) an improved recovery of the stress field, (2) a
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::85914f98817631ab479fa9445fa1c365
https://doi.org/10.1002/nme.5462
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7
Parallel preprocessing with subdomain's shape control for domain decomposition methods
Autor: Christophe Bovet, Yannis El Gharbi, Pierre Gosselet, Augustin Parret-Fréaud
Publikováno v: Sixth International Conference on Parallel, Distributed, GPU and Cloud Computing for Engineering
Sixth International Conference on Parallel, Distributed, GPU and Cloud Computing for Engineering, Jun 2019, Pécs, Hungary. ⟨10.4203/ccp.112.21⟩
International audience; Solving highly heterogeneous structural mechanic problems with a large number of degrees of freedom (HPC simulations) is a real issue in engineering work, because of the required time and memory. Non overlapping domain decompo
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2ae54e90533ecb566ac8a5108a366c00
https://hal.science/hal-02151095/file/gharbi.pdf
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9
Two-level adaptation for Adaptive Multipreconditioned FETI
Autor: Christophe Bovet, Augustin Parret-Fréaud, Pierre Gosselet
Publikováno v: Advances in Engineering Software
Advances in Engineering Software, 2021, 152, pp.102952. ⟨10.1016/j.advengsoft.2020.102952⟩
Advances in Engineering Software, Elsevier, 2021, 152, pp.102952. ⟨10.1016/j.advengsoft.2020.102952⟩
International audience; This article introduces two strategies to reduce the memory cost of the Adaptive Multipreconditioned FETI method (AMPFETI) while preserving its capability to solve ill conditioned systems efficiently. Their common principle is
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ea69fced7e5523b92df7400b9512979c
https://doi.org/10.1016/j.advengsoft.2020.102952
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10
Time-domain damping models in structural acoustics using digital filtering
Autor: Antoine Chaigne, Augustin Parret-Fréaud, Benjamin Cotté
Publikováno v: Mechanical Systems and Signal Processing
Mechanical Systems and Signal Processing, 2016, 68-69, pp.587-607. ⟨10.1016/j.ymssp.2015.08.005⟩
Mechanical Systems and Signal Processing, Elsevier, 2016, 68-69, pp.587-607. ⟨10.1016/j.ymssp.2015.08.005⟩
International audience; This paper describes a new approach in order to formulate well-posed time-domain damping models able to represent various frequency domain profiles of damping properties. The novelty of this approach is to represent the behavi
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::631ca8c57e203a964450fdaf4e4f9be9
https://ensta-paris.hal.science/hal-01253180/document
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