Calculation of stress intensities at the interface corner of anisotropic/isotropic bonded joints with a wedge

Abstract

The behavior of bonded joints is of interest in many engineering fields. In order to analyze the failure at the interface of a bi-material structure, it is important to investigate stress intensities at the interface corner. In this paper, the expanded Stroh formalism is used to determine asymptotic stress and displacement fields near the interface corner between anisotropic and isotropic adherends. This simple procedure makes it possible to obtain stress singularities more easily than before. Three examples are presented to help understand the method. To obtain stress intensities at the interface corner, a path-independent conservative line integral, derived from Betti's reciprocal principle, is used. Finally the method to calculate stress intensities at the interface corner of bonded joints is presented in detail.