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Nonsmooth fracture dynamics of functionally graded materials


Congress title :EURODYMAT 2006 8th International Conference on Mechanical and Physical Behaviour of Material under Dynamic Loading
Congress town :Dijon
Congress date :11/09/2006

Document type > *Congrès/colloque

Keywords > cohesive zone, zircaloy

Research Unit > IRSN/DPAM/SEMCA/LEC

Authors > CHRYSOCHOOS André, MONERIE Yann, PERALES Frédéric

Publication Date > 11/09/2006

Summary

This paper presents a numerical framework for the simulation of dynamic fracture of heterogeneous material. It consists in a multibody approach based both on the concept of Frictional Cohesive Zone Model and on NonSmooth Contact Dynamics. The heterogeneities of the material are taken into account using a multiscale method. The microscopic scale corresponds to the scale of heterogeneities. The macroscopic scale corresponds to the structure where gradients of properties could be invoked. The ability of the framework is illustrated on the fracture of hydrided Zircaloy-4, constituting nuclear cladding tube, under transient loading.

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