Mesoscopic Simulation of Microcracking Behaviors of Brittle Polycrystalline Solids (1st Report, Study of Isotropic Theory in Continuum Damage Mechanics)

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 materials, however, it is fairly difficult to obtain analytically as well as experimentally evolution equations for microcracking and reduced elastic compliances of micro-cracked solids. In the present study, a mesoscopic (grain level) simulation method using a discontiuum mechanics model is proposed to solve these problems. The validity and limitations of the isotropic theory of continuum damage mechanics are studied in the first report. © 1993, The Japan Society of Mechanical Engineers. All rights reserved.