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Enhancing Nuclear Safety


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Fracture of Heterogeneous Materials : From Microstructure to Structure

Euromech - Mecamat - Emmc9, Moret sur Loing, 9-12 may 2006

F. Perales(1), Y. Monerie(1), A. Chrysochoos(2).

Document type > *Congrès/colloque

Keywords > safety, finite elements, hydride, zircaloy

Research Unit > IRSN/DPAM/SEMCA/LEC

Authors > MONERIE Yann, PERALES Frédéric

Publication Date > 09/05/2006

Summary

The paper is devoted to the dynamic fracture of heterogeneous material. The micromechanical method used consists in a multibody approach based both on the concept of Frictional Cohesive Zone Model and on the Non Smooth Contact Dynamics. A multiscale method based on numerical periodic homogenization leads to a two field Finite Element formulation and an appropriate extension of the NSCD is proposed. The ability of this framework is illustrated by the dynamic fracture of hydrided Zircaloy-4.

(1) : Institut de Radioprotection et de Sûreté Nucléaire, DPAM, SEMCA, LEC
(2) : Laboratoire de Mécanique et Génie Civil, CC048, Place E. Bataillon, 34095 Montpellier cedex 5


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