The magneto-electroelastic solution of a generalized screw dislocation interacting with a wedge-shaped magneto-electroelastic bi-material interface was derived in this paper. The screw dislocation was assumed to be straight and infinitely long in the z-direction and suffers a finite discontinuity in the displacement, electric potential and magnetic potential across the slip plane. The explicit closed-form analytical solution for the generalized stress field was derived by means of the complex variable and conformal mapping methods. The generalized stress intensity factors of the wedge tip induced by the dislocation and the image force acting on the dislocation were formulated and calculated. The influence of the wedge angle and the different bi-material constant combinations on the image force was discussed. Numerical examples for three particular wedge angles were calculated and compared with other available results.

A Generalized Screw Dislocation Near a Wedge-Shaped Magnetoelectroelastic Bi-Material Interface. Z.M.Xiao, B.J.Chen, J.Luo: Acta Mechanica, 2010, 214[3-4], 261-73