Strength analysis of a bimaterial with an internal crack and sliding interface contact

For analyzing the stress-strain state of an infinite bimaterial composed of two half-spaces containing a circular internal crack under static tensile loading, a boundary-integral approach is considered. Smooth contact conditions with slip are imposed on the interface surface of the body. The problem is reduced to solving a two-dimensional boundary integral equation of the Newtonian potential type concerning the unknown crack opening displacement function on the defect surfaces. Using the obtained solutions, stress intensity factors for mode I are computed, and their dependencies on the stiffness ratio of the bimaterial components, the distance between the defect and interface, and on the angular coordinate of the crack contour point are analyzed