复合材料界面对其断裂过程影响的有限元研究

1.北京航空航天大学材料科学与工程学院,北京,100083

2.北京航空航天大学材料科学与工程学院,北京,100083

3.北京航空航天大学材料科学与工程学院,北京,100083

4.航天材料及工艺研究所先进功能复合材料技术国防科技重点实验室,北京,100076

5.航天材料及工艺研究所先进功能复合材料技术国防科技重点实验室,北京,100076

Finite Element Research on Interface of Composites During Fracturing

采用了有限元方法研究了裂纹在陶瓷基复合材料中扩展和偏转过程,探讨了界面对陶瓷基复合材料失效模式的影响.采用的界面模型考虑界面的分离势和基体与纤维间的摩擦.结果表明,在界面结合强度一定的条件下,随着基体弹性模量的不断增大,材料的断裂功也随之增大,材料的韧性和抗热震性能也就随之提高.

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