Singular stress analysis in a viscoelastic thin layer bonded to an elastic substrate using realistic relaxation function

This paper deals with the stress singularity induced at the interface corner between the perfectly bonded thin layer and elastic substrate subjected to a uniform temperature change and a shear loading using realistic relaxation function. The thin layer is assumed to be a linear viscoelastic material. The time-domain boundary element method is used to investigate the behavior of stresses for the whole interface. Within the context of a linear viscoelastic theory, a stress singularity exists at the point where the interface between one of the elastic substrate and the viscoelastic thin layer intersects the free surface