Výsledky vyhledávání - "Guylaine Boittin"

Numerical simulations and modeling of the effective plastic flow surface of a biporous material with pressurizedintergranular voids

Autor: Pierre-Guy Vincent, Guylaine Boittin, Mihail Garajeu, Hervé Moulinec

Publikováno v: Computer Methods in Applied Mechanics and Engineering
Computer Methods in Applied Mechanics and Engineering, Elsevier, 2017, 323, pp.174-201. ⟨10.1016/j.cma.2017.05.004⟩
Computer Methods in Applied Mechanics and Engineering, 2017, 323, pp.174-201. ⟨10.1016/j.cma.2017.05.004⟩

International audience; This study is devoted to the effective plastic flow surface of a biporous polycrystalline material, with an intragranular porosity consisting of spherical voids, and an intergranular porosity consisting of larger elongated voi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::69c5046d9a42c3e89282cb2891f81236
https://doi.org/10.1016/j.cma.2017.05.004

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A micromechanical model for the secondary creep of elasto-viscoplastic porous materials with two rate-sensitivity exponents: Application to a mixed oxide fuel

Autor: Kajetan Wojtacki, Guylaine Boittin, Pierre Suquet, Pierre-Guy Vincent, Hervé Moulinec

Publikováno v: International Journal of Solids and Structures
International Journal of Solids and Structures, Elsevier, 2018, ⟨10.1016/j.ijsolstr.2018.12.026⟩
International Journal of Solids and Structures, Elsevier, 2020, 184, pp.99-113. ⟨10.1016/j.ijsolstr.2018.12.026⟩
International Journal of Solids and Structures, 2018, 184, pp.99-113. ⟨10.1016/j.ijsolstr.2018.12.026⟩

International audience; This study deals with the secondary creep of a porous nuclear fuel. This material is composed of an isotropic matrix, weakened by randomly distributed clusters of pores. The viscous strain in the matrix is described by two pow

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8c09c35a85f0b54904f12d6f23ece823
https://hal.archives-ouvertes.fr/hal-01997756/document

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Numerical simulations and modeling of the effective plastic flow surface of a biporous material with pressurized intergranular bubbles: application to irradiated uranium dioxide

Autor: Guylaine Boittin, Pierre-Guy Vincent, Hervé Moulinec, Mihail Garajeu

Publikováno v: NuMat2016: The Nuclear Materials Conference
NuMat2016: The Nuclear Materials Conference, Nov 2016, Montpellier, France
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International audience; In this work, the specific microstructure of the irradiated uranium dioxide (UO2) is modeled as a biporous material with 2 populations of bubbles: intragranular bubbles of spherical shape, and an intergranular population of bu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::3b5a1205b8ad4ac25c260841cf45a334
https://hal.archives-ouvertes.fr/hal-01409668

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Étude du comportement mécanique de microstructures à porosité bimodale pressurisée par transformées de Fourier rapides

Autor: Guylaine Boittin, Hervé Moulinec, Mihail Garajeu, Pierre-Guy Vincent

Publikováno v: Deuxièmes Journées Matériaux Numériques
Deuxièmes Journées Matériaux Numériques, Feb 2015, St-Aignan-sur-Cher, France
www.jmatnum.org
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National audience; Le comportement des matériaux poreux est étudié depuis longtemps car la présence des cavités peut mener à l'endommagement voire à la rupture du matériau. Des développements récents tendent à préciser l'effet de taille,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::501717799adca1776a24a71556875587
https://hal.science/hal-01399879/document

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Influence of γ′ Precipitate Size and Distribution on LCF Behavior of a PM Disk Superalloy

Autor: P. Caron, Guylaine Boittin, Pascale Kanouté, F. Gallerneau, A. Rafray, Georges Cailletaud, D. Locq

Publikováno v: Superalloys 2012

The influence of γ' precipitate distribution on tensile and low cycle fatigue (LCF) behaviors of a powder metallurgy (PM) disk superalloy was investigated at 450°C. Four γ' particle distributions were obtained through various cooling paths and/or

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::87c2efc2de67f9c476be4a7860918e61
https://doi.org/10.1002/9781118516430.ch19

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