Mesures de champs et identification de modèles de plasticité cristalline

Abstract : The study deals with experimental aspects and model development for crystal plasticity.
The constitutive equations introduce a new interaction matrix, stopping colinear slip, that is validated
by means of tests on OFHC copper involving complex loading paths.
The strain localisation is analysed thanks to field measurements obtained under scanning electron microscope during complex loading path experiment. A 3D synthetic representative microstructure is developped from EBSD map for a comparison between experimental fields and FE computations.
Finally, several mean fields models are numerically evaluated by a comparison with periodic FE computations at a mesoscopic scale and on the level of the phases. The representative volume element is defined at macro and micro scales.
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https://tel.archives-ouvertes.fr/tel-00315792
Contributor : Céline Gérard <>
Submitted on : Monday, September 1, 2008 - 8:37:06 AM
Last modification on : Tuesday, November 5, 2019 - 5:40:54 PM
Long-term archiving on: Thursday, June 3, 2010 - 5:49:12 PM

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  • HAL Id : tel-00315792, version 1

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Céline Gérard. Mesures de champs et identification de modèles de plasticité cristalline. Mécanique [physics.med-ph]. Université Paris-Nord - Paris XIII, 2008. Français. ⟨tel-00315792⟩

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