INTERFACE BEHAVIOR OF GRANULAR MATERIALS: DISCRETE NUMERICAL SIMULATION OF A RING SIMPLE SHEAR TEST

Abstract eng:
The paper aims at analyzing the interface behavior of granular material with a particular interest on the grain size distribution and the contact law (linear or non-linear elastic). The effect of these parameters on the initial state (density and arrangement) and the global behavior is studied by the simulation of a ring simple shear test using the Discrete Element Method and compared with theoretical developments. The global behavior characterized by the initial shear modulus is compared with the results of an homogenization approach explicitly accounting for the particle size distribution and the linear or non linear elasticity of the contact law.

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