On resultant force due to a screw dislocation in an anisotropic twohyphen;phase medium

摘要

It is shown that, for a straight screw dislocation in an anisotropic twohyphen;phase medium, there is no resultant force exerted on any closed curve inside the medium. The resultant force on an infinite plane, if it intersects the interface, can be finite in an anisotropic medium, but it vanishes as isotropy is approached.