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Homogénéisation du comportement élastoplastique des gainages de crayons combustibles

17 ème Congres Français de mécanique, Troyes, september 2005

Pierre-Guy Vincent(1), Yann Monerie(1) et Stéphane Bourgeois(2).

Document type > *Congrès/colloque

Keywords > safety, elasto-plastic, hydride, micromechanic, zircaloy

Research Unit > IRSN/DPAM/SEMCA

Authors > MONERIE Yann, VINCENT Pierre-Guy

Publication Date > 01/09/2005

Summary

The present work aims at determining a micromechanical model for the anisotropic elastoplastic behavior of Hydrided Zircaloy. The microstructure of the considered material is supposed to be composed of an anisotropic and elasto-plastic matrix containing isotropic elastic inclusions which have the same direction and which centers are randomly distributed. The homogeneous behavior of this non linear two phases material is obtained by a linearization based on the modified secant method and by the estimation of Ponte-Casta ˜neda-Willis [1] for the behavior of the linear comparison composite.

(1) : IRSN, BP3-13115 St. Paul-lez-Durance, France
(2) : Ecole Généraliste d’Ingénieurs de Marseille (EGIM) et Laboratoire de Mécanique et d’Acoustique (LMA)
IMT - Technopole de Chateau Gombert - 13451 Marseille cedex 20

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