The crack tip fields of Mode II stationary growth crack on bimaterial interface

Abstract

A mechanical model is established for mode II interfacial crack static growing along an elastic-elastic power law creeping bimaterial interface. For frictional contact of boundary conditions on crack faces, asymptotic solutions of the stresses and strains of near tip-crack are got. It was shown that in stable creep growing phase, elastic deformation and viscous deformation are equally dominant in the near-tip field, the stress and strain have the same singularity and there is not the oscillatory singularity the field. Through numerical calculation, it is shown that the frictional coefficientη notably influence the crack-tip field.

Keywords

an elastic-elastic power law creeping material / near-tip field of mode II interfacial crack / the frictional effect