各向异性复合材料界面裂纹与界面下平行微裂纹干涉

利用伪力－位错法对各向异性复合材料中界面裂纹与界面下平行于界面的微裂纹的干涉问题进行了研究，推导出了界面裂纹及界面下裂纹的基本解，将裂纹间的干涉问题化为一奇异分方程组，并借助Ｃｈｅｂｙｓｈｅｖ多项式及Ｃｈｅｂｙｓｈｅｖ数值积分法进行了求解。

Interface Crack Interacting with Parallel Subinterface Crack in Dissimilar Anisotropic Composite Materials

The pseudo traction method is combined with the edge dislocation method to solve the interactive problem of an interface crack with subinterface cracks in dissimilar anisotropic composite materials. First, the fundamental solutions for an interface crack loaded by normal or tangential tractions on both crack surfaces and the fundamental solutions for an edge dislocation beneath the interface in dissimilar anisotropic composite body are derived. Then, the interactive problem is reduced to a system of singular integral equations, which can be solved numerically with the aid of the Chebyshev numerical integration and Chebyshev polynomial technique. It is found that the material mismatch has a remarkable influence on the cracks interaction and the model I stress intensity factor plays a dominant role in the energy release rate.