Screw Dislocations in a Three-Phase Anisotropic Medium.

摘要

The displacement and stress fields of a screw dislocation in a three-phase anisotropic medium with orthotropic symmetry are analyzed. Exact expressions are given in series form. In the limiting case where the two outer phases are rigid, the series expressions converge to simple functions which are identical (apart from the elastic constants) to those for an isotropic medium. This equivalence relation facilitates the analysis of dislocation pileups. The inhomogeneity effect on pileups is examined. (Author)