ABSTRACT
The boundary layer and the inner electroelastic state are responsible for the three-dimensional boundary conditions at the edge. The internal electroelastic state is not always uniform where variability is concerned. In the presence of distortion lines, the electroelastic state consists of the principal and auxiliary components. In statics, the internal electroelastic state with small variability can be represented as a sum of the principal electroelastic state (membrane or pure moment state) and the simple edge effects localized at the edges and quickly decreasing with the distance from the edge. This chapter represents every quantity in the boundary conditions as a sum of three terms: the first term is found from the equations of the internal electroelastic state, and the second and third terms are found from the antiplane and plane problems, respectively. Then, if the variability index of internal electroelastic state is smaller than 1/2, every quantity of the internal electroelastic state is represented as a sum of two terms.
