تحلیل همزمان گسترش دینامیکی ترک و تماس سطوح آن در روش المان مرزی یکدامنه

Abstract

The formulation of simultaneous analysis of dynamic crack growth and contact of its faces in two-dimensional domain is introduced. Displacement and traction boundary integral equations and additional contact equations are used simultaneously in one region in the time domain. The proposed method has the capability of automatic modelling of crack propagation and contact of crack faces in mixed mode fractures by adding only new elements in front of crack tips. This automatic capability of simultaneous analysis of dynamic discrete crack propagation and contact problem is not enhanced in any of available commercial softwares. In order to verify the proposed method and so as to show the versatile features and capabilities of the method, dynamic crack growth of edge cracks and contact of crack faces in a T shaped plate is analysed