EFFECT OF THE TYPE OF A PLANE PROBLEM FOR A THIN ELASTOPLASTIC ADHESIVE LAYER ON \(J\) INTEGRAL VALUES

Abstract

This paper describes a study of deformation of an ideal elastoplastic adhesive layer of a sample in the form of an elastic double-cantilever beam. The \(J\) integral values are determined for a number of adhesives with account for all diagonal stress tensor components in the layer. It is shown that the \(J\) integral value is significantly affected by the plane problem type in the case where an elastic-plastic model of layer deformation is applied. As demonstrated in the study, compressive stresses may be present during normal fracture in the irreversible deformation region of the adhesive in a plane stressed state.