Mesoscopic simulation of microcracking behaviors of brittle polycrystalline solids (2nd Report, study of anisotropic theory in continuum damage mechanics)

The mesoscopic simulation method proposed in the first report of the present study has been applied to the analysis of a brittle polycrystalline solid under proportional loading of biaxial stresses. The validity and limitations of the anisotropic theory of continuum damage mechanics using a second order tensor as damage variables have been studied through comparisons of simulational results and theoretical predictions. It has been shown that the existing anisotropic theory is inapplicable to the compression-predominant stress state because of an associated type of damage evolution equation, although it is effective in the tensile stress field.