STRESS-ANALYSIS AROUND A CIRCULAR INTERFACE CRACK BETWEEN DISSIMILAR MEDIA LOADED BY UNIFORM TENSION AT INFINITY

The analytic solutions for stress concentration around a circular inte rface crack between two dissimilar elastic planes under uniform tensio n are given and discussed. A process zone with both stresses and displ acements at a crack tip and along the interface is assumed, and then s ome new weight functions are determined which can relax the stress osc illation zone for a special circular interface. It is shown that the s tress distribution and displacements have smoothed shapes. Although th e solutions are the elastic ones, the violent oscillations found in pa st studies do not occur.