Interface Crack Interacting with Parallel Subinterface Crack in   Dissimilar Anisotropic Composite Materials
Tian Wenye¹£¬Chen Yiheng¹£¬Yan Yongping²
(1.Xi'an Jiaotong University, Xi'an 710049,China£»2.Shanxi Hydropower Engineering Bureau)

Abstract: The pseudoª²traction 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 anedge 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.
Keywords:  anisotropic;interface crack;interactive problem

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