Abstract:
Correspondence principle is widely applied to solve viscoelastic problems, i.e., the solutions in the Laplace field from the correspondent of elastic solutions, and the reversed solutions into time field by inverse transformation. However, the fields near an interface crack tip are so complicated that it is difficult to complete the exact Laplace reverse transformation. The correspondence principle in a simple way, so called "quasi-static processing" was applied,just replacing the material parameters in elastic solutions with viscoelastic parameters. The results are compared with FEM analysis. Meanwhile, an interface crack tip under mixed tensile and shear traction was also analyzed, by adopting Comninou contact model.