A screw dislocation in a piezoelectric bi-material wedge

The electro-elastic stress investigation for a dislocation located near the apex of two bonded wedge-shaped dissimilar piezoelectric materials has been carried based on the complex variable method and perturbation technique. The dislocation has the Burger's vector normal to the isotropic basal plane, with a line force and a line charge being applied at the core of the dislocation. An exact analytical solution has been presented for the stress and electric displacement fields by means of conformal mapping method. Forces on the dislocation have been calculated. Examples for different material property combinations and geometric configurations are given and discussed.