Numerical Simulation of Coalescence of Numerous Microcracks
会议名称：《The Sixth World Congress on Computational Mechanics in Conjunction with the Second Asian-Pacific Congress on Computational Mechanics》
会议日期：2004年
学科分类：08[工学] 080102[工学-固体力学] 0801[工学-力学（可授工学、理学学位）]
摘 要：Many phenomena of deformation and failure of brittle or quasi-brittle solids are closely related to interaction and propagation of stochastically distributed microcracks. In this paper, a numerical method is presented for calculating the effective elastic moduli and the tensile strength and for simulating the failure process of brittle specimens associated with microcracking damage. By introducing two criteria for microerack growth and coalescence in terms of Griffith s energy release rate, the above numerical method is used here to simulate the coalescence process of microcracks that results in a fatal crack and the final rupture of a specimen.