Abstract

In this paper, by use of test combined with numerical simulation, the out-of-plane loading-bearing failure process of CFRP and C/C joints were studied, while Hashin failure criterion was selected to predict the damage and the failure morphologies were observed. Results show that the failure process of CFRP joint is characterized by a three-peak mechanical response and bending failure accompanied the failure mechanism of interface debonding and cracking of fiber and matrix, and that of C/C joint is characterized by pseudoplasticity and shearing failure accompanied a large number of matrix cracks, local interface debonding and fiber kink and buckling.

中文翻译：

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CFRP和C/C复合材料接头在面外加载下的失效模式和损伤机制比较

摘要

本文采用试验结合数值模拟的方法，研究了CFRP和C/C接头的面外承载破坏过程，同时选择Hashin破坏准则对破坏进行预测并观察破坏形态。 . 结果表明，CFRP接头的失效过程以三峰力学响应和弯曲失效为特征，并伴有纤维与基体界面剥离和开裂的失效机理，C/C接头的失效过程以假塑性和剪切失效为特征。大量基体裂纹、局部界面脱粘和纤维扭结屈曲。