XFEM with high-order material-dependent enrichment functions for stress intensity factors calculation of interface cracks using Irwin’s crack closure integral

This paper presents a high-order extended finite element method (XFEM) with a novel set of material-dependent enrichment functions for the linear elastic analysis of bimaterial interface cracks. With the proposed material-dependent high-order enrichment functions, highly accurate near-tip displacement and stress fields can be obtained for arbitrary material combinations. The aim of this contribution is the direct evaluation of the complex stress...