Abstract
Stress analysis is accomplished for an infinite isotropic wedge weakened by a screw dislocation. Two different cases of boundary conditions, i.e., traction–displacement and traction–traction, is considered for the wedge. The Mellin transform is utilized to solve the governing differential equation. The dislocation solution is employed for the analysis of wedges containing multiple cracks under antiplane deformation. The resultant system of singular integral equations is solved numerically to determine dislocation density on the cracks surfaces. This allows the calculation of crack opening displacements and stress intensity factors. The effects of wedge angle and cracks location and orientation on the stress intensity factors of straight cracks are investigated.
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