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A STUDY ON THE ELASTOPLASTIC DYNAMIC CONSTITUTIVE LAW OF GRANULAR MEDIUM

Wang Mingyang;Qian Qihu (Nanjing Engineering Institure,Nanjing,210007)  
In this paper, taking the topo structure and local nonlinear interaction of interparticles into account and intruducing coefficient of restitution,an elastoplastic law with sliding and seperation of patricles under large deformation for granular material is derived based on mutiply rigid dynamics and micro-mechanics approach.
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