采用IOSIPESCU纯剪切试件,考虑纤维的编织结构和失效机理,研究了三维机织碳/碳化硅(C/SiC)复合材料在面内剪切载荷作用下的力学性能和损伤过程.材料具有明显的非线性应力-应变行为和残余变形等特性.材料主要的损伤机制为基体微裂纹开裂,界面脱粘和纤维断裂,其中界面裂纹是材料应力-应变等力学行为的主要影响因素.基于连续介质损伤力学分析方法,提出了简单的损伤演化模型并对损伤演化过程进行了描述.
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