Elastic Interaction of a Hole with Radial Surface Cracks of Different Length in the Isotropic Plate

摘要

We consider the interaction of four surface cracks and a circular hole located in a thin isotropic plate. To solve this problem, we apply the method of boundary integral equations and the line-spring model. The system of boundary integral equations of this problem is solved numerically by the method of mechanical quadratures. The interaction of defects is revealed in the case of their location at small distances. We also compute the stress intensity factors at the crack tips and the stress concentration factors at the contour of the hole.