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Méthode de couplage entre expérimentations et simulations numériques en vue de l'identification de lois de comportement intracristallin. Application aux alliages de zirconium

Abstract : This thesis presents a methodology for multiscale coupling between the morphology and texture of a microstructure as has been characterised experimentally, and the results of mechanical strain field analysis. This methodology is based on a coupling between experimental characterisation of the microstructure, ex-situ mechanical tests, local strain field measurements performed at the grain scale, and finite element simulations. Then, a definition of a cost function is proposed in order to optimise the parameters of the crystallographic constitutive law.

This method is applied to the studies of zirconium alloys in order to improve the understanding of their mechanical behaviour in relation with their microstructures, which is a key requirement for their use in the nuclear industrie.
This work was funded by the joint research program SMIRN between EDF, CEA and CNRS.
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Submitted on : Wednesday, November 22, 2006 - 4:15:14 PM
Last modification on : Thursday, September 24, 2020 - 4:00:21 PM
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  • HAL Id : tel-00115684, version 1

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Marie Dexet. Méthode de couplage entre expérimentations et simulations numériques en vue de l'identification de lois de comportement intracristallin. Application aux alliages de zirconium. Mécanique [physics.med-ph]. Ecole Polytechnique X, 2006. Français. ⟨tel-00115684⟩

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