Analytical Study of the Effect of Interfacial Slip on Stress Singularity on Interface of Bonded Material

Abstract

The effects of plastic deformation and interfacial slip on stress singularity near an interfacial crack and the end of bonded joint were studied by FEM with bond elements which had a feature of stress field on an interfacial plane. The results obtained are as follows: The solutions obtained by FEM coincided with the analytical ones using an image stress function proposed by other investigators. In the case that plastic deformation was induced near the interfacial crack tip, the singularity term decreased with work hardening coefficients. In addition, when a slip deformation occurred at the bonded interface, the analytical solutions by FEM approached to those of a homogeneous body. On the other hand, the stress singularity field near the end of bonded material disappeared by slip deformation.