The interaction of a generalized screw dislocation, which was located inside either the inclusion or the matrix, with circular-arc interfacial rigid lines under remote antiplane shear stresses, in-plane electric and magnetic loads in linear magneto-electro-elastic materials was dealt with. By using the complex variable method, the general solutions of the physical problem were presented here. The closed-form solutions for stresses, electric displacement fields and magnetic induction fields were derived explicitly for the interface with a finite rigid line. The image forces acting on the generalized screw dislocation were then calculated by using the generalized Peach–Koehler formula. The influence of the length and the location of the rigid line as well as the material mismatch on the image force was evaluated. Numerical computations and discussions show that, when the length or the position of the interfacial rigid line achieves a critical value, the image force on the dislocation changes its direction due to the existence of the rigid line. In addition, the soft inclusion could repel the dislocation in magneto-electro-elastic materials owing to their intrinsic magneto-electromechanical coupling behavior.

On the Interaction Between a Generalized Screw Dislocation and Circular-Arc Interfacial Rigid Lines in Magneto-Electro-Elastic Solids. Q.H.Fang, Y.W.Liu, C.P.Jiang: International Journal of Engineering Science, 2005, 43[11-12], 1011-31