Model of anisotropic micromechanical damage applied to ceramics

This paper deals with an anisotropic modelisation of ceramic damage under dynamic loading. It's a generalisation of Rajendran's micromechanical model. The damage is represented by three orthogonal cracks systems, allowing the loading - induced anisotropy to be taken into account. A nucleation and a growth kinetic law, implying material pulverisation, are adjusted to a new statistical microcrack description. The model is implanted in the code DYNA3D and applied with success to the simulation of compressive Hopkinson's Bar Tests.