COMPUTER SIMULATION METHOD FOR CRACK GROWTH USING INTERFACE ELEMENT EMPLOYING LENNARD-JONES TYPE POTENTIAL FUNCTION

Abstract

The phenomena of crack propagation and interface debonding can be regarded as formation of new surface. Thus, it is quite natural to model these problems by introducing the mechanism of surface formation. The authors proposed a method in which the formation of new surface is represented by interface element based on the interface potential energy. The general idea of the interface element and its application to peeling test of bonded plates, push-out test of fiber in matrix, dynamic crack propagation and ductile tearing of steel plate are presented.