Author(s)

S.S. Lee, J.G. Kim & J.K. Hwang

Abstract

Boundary element analysis of stress intensity factor for interface crack in elastic and viscoelastic bimaterials S.S. Lee, J.G. Kim, J.K. Hwang Reactor Mechanical Engineering Department, Korea Atomic Energy Research Institute, Taejon, South Korea ABSTRACT The stress intensity factor for an interface crack in dissimilar elastic and viscoelastic materials is derived and the time-domain boundary element analysis is performed. Numerical results show that the proposed method is very useful for the analysis of the interface crack in elastic and viscoelastic materials. 1. Introduction The mechanics of cracks at a hi material interface has been studied by several authors[1-7]. The oscillation of stresses or the overlapping of crack surfaces near the interface crack-tip occurs although the boundary condition of crack surfaces is taken as traction free. As several investigators indicated, however, the oscillation region can be ignored, since such region is confined to

Keywords