1 引言 纤维增强复合材料的断裂,一般包括三个过程:①基体与纤维界面的脱粘,②纤维断裂;③基体中的裂纹扩展。从复合材料承载能力的观点来看,纤维断裂最为重要,所以根据内应力在纤维中的重新分布对复合材料的破坏进行了某些分析。但这些研究局限于静态分析,而高强度脆性纤维的断裂实际上是一个动态过程,它伴随着有能量的突 1 Introduction Fiber-reinforced composite material fracture, generally includes three processes: ① matrix and fiber interface debonding, ② fiber fracture; ③ crack propagation in the matrix. From the point of view of the bearing capacity of the composite material, the fracture of the fiber is of the utmost importance. Therefore, some analyzes on the failure of the composite material are made based on the redistribution of the internal stress in the fiber. However, these studies are limited to static analysis, and the fracture of high-strength brittle fibers is actually a dynamic process accompanied by energy bursts