界面主裂纹和微裂纹之间的干涉

INTERACTION MBETWEEN INTERFACE MACROCRACK AND MICROCRACKS

采用复势函数的位错解方法，通过对奇异积分方程的建立和数值求解，研究了界面主裂纹同界面及基体微裂纹之间的干涉．结果表明远场载荷角ψ同Ｄｕｎｄｅｒ’ｓ参数α对界面微裂纹及基体中水平微裂纹同主裂纹干涉的影响都很显著。

With the use of the dislocation method of complex potential function, this paper studies the interaction between the interface macrocrack and the interface or beneath-interface microcracks by the construction and numerical solution of singular integral equations. The results show that the remote field phase angle ψ and Dunder′s parameter α have great influnce on the interaction between interface macrocrack and microcracks, while the effect of ψ on the shielding zone is far less than that of α.