An investigation was made of the stress fields caused by a dislocation in an anisotropic 3-layer system. Based upon the image method, the original 3-layer system was firstly decomposed into three infinite homogenous systems. The image dislocation densities used as unknowns were then strategically distributed in order to satisfy the boundary conditions. The resulting governing equations were singular Cauchy integral ones. Removing the singular terms yields non-linear Fredholm integral equations of the second kind. The obtained stress fields satisfy the boundary conditions, i.e., the traction free condition on the free surface and continuous conditions across the interfaces. Also, a comparison with previous results was made and good agreement was achieved. Numerical investigations showed that under the plain strain condition, layer thickness and dislocation position played stronger roles in the stress fields than crystallographic orientation, and these effects more significantly affect the stress fields caused by an edge dislocation than by a screw dislocation.

Stress Fields Caused by a Dislocation in an Anisotropic 3-Layer System. H.Y.Wang, Y.H.Yin, S.R.Yu: Science China - Physics, Mechanics & Astronomy, 2011, 54[3], 542-51