Description of stress fields and displacements at the tip of a rigid, flat inclusion located at interface using modified stress intensity factors
Keywords:fracture, bimaterial, rigid inclusion, singular stress fields, stress intensity factors
This paper presents the results of investigating a flat element of two-phase structure with sharp linear inclusion located at the interface. Analytical description of fields of stresses and displacements at the tip of a sharp rigid inclusion was obtained as an asymptotic. It was presented as a function of modified stress intensity factors. Relationship between the classically defined stress intensity factors KI and KII has been identified and analytical description of the modified coefficients and has been adopted. Possibility of using different methods (e.g. the FEM) set on determining coefficients has been discussed, and thus these values have been calculated numerically and compared with the exact solution.