Abstract:
This paper discusses the analysis of a crack along an interface between two dissimilar elastic quarter planes for cases where the crack breaks the free surface. A dislocation density method of analysis is employed and the appropriate dislocation solution and far-field stress expressions are highlighted. Models for crack tip behaviour are discussed and it is shown that a simplified quadrature can be used to extract the crack extension force. Sample results for an interface crack loaded by constant crack face pressure are given.