Abstract
Fracture behaviors of brittle polycrystalline solids such as ceramic materials are deeply related to microcracking. Continuum damage mechanics is considered a powerful theoretical framework to deal with brittle microcracking solids. However, it is fairly difficult to obtain analytically, as well as experimentally, evolution equations for microcracking and reduced elastic compliances of microcracked solids. In the present study, a three-dimensional mesoscopic simulation method using a discontinuum mechanics model is employed to obtain this information. Based on the results of mesoscopic simulations, improved damage mechanics models assuming anisotropy as well as isotropy are proposed. Some numerical studies have been conducted to confirm their validities.
Published Version
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