Stress Analysis for Multi-layered Materials with Misfit Dislocation Networks

Abstract

In the present paper, misfit dislocation networks are introduced to coherent interfaces in order to express the stress and displacement distributions in incoherent interfaces. The interface zone, in which only traction transfers from one atomic layer in a layer to the opposite atomic layer, is introduced, then these regions slip against each other due to the misfit dislocation. The tractions in the interface zone depend on the displacements and the interface properties. Expressions for stress and displacement considering the interface properties are deduced using a three-dimensional Stroh's formalism. Bulk stress around the misfit dislocation increase due to the interface stress and the interface elastic moduli.