Stress singularities in a dissimilar materials joint with edge tractions under mechanical and thermal loadings

Abstract

In a two dissimilar materials joint the stresses at the intersection of the edges and the interface are singular for elastic material behaviour. For a joint with edge tractions the stresses near the singular point are the sum of singular terms and regular terms. Earlier investigations have shown that the singular stress exponents are the same for a joint with free edge and edges with tractions. In the literatures only the singular term has been studied. The emphasis in this paper is placed on giving an explicit form of the regular stress terms as a function of the edge tractions, the material properties and the geometry of the joint. It is shown that the regular terms are important also for the stress distribution near the singular point.