Solutions for Somigliana ring dislocations in an elastic half space and in 2 perfectly bonded dissimilar half spaces, with the dislocation ring parallel to the interface, were obtained from Papkovich potential solutions by using Aderogba’s theorem. The interaction between a dislocation and a free surface, or a perfectly bonded interface, was considered.
Somigliana Ring Dislocation – II. Solutions for Dislocations in a Half-Space and in One of Two Perfectly Bonded Dissimilar Half-Spaces. A.M.Korsunsky: Journal of Elasticity, 1996, 44[2], 115-29