Distribution of slip regions on the fiber-matrix interface of ceramic matrix composites under arbitrary loading

摘要

The distribution of slip regions on the fiber-matrix interface of unidirectional fiber-reinforced ceramic matrix composites is described to simulate the constitutive behavior under arbitrary loading and unloading. The appearance and disappearance of forward and reverse slip regions are discussed and the stress distribution when there are any number of forward and reverse slip regions is also provided. The interface slipping and constitutive behavior after closure of matrix cracks under compressive loading are analyzed. Based on the distribution model of slip regions, the stress-strain response of unidirectional fiber-reinforced ceramic matrix composites under arbitrary loading and unloading is calculated.