A PERIODIC SYSTEM OF ELECTRICALLY PERMEABLE CRACKS AT THE INTERFACE BETWEEN TWO PIEZOELECTRIC MATERIALS

摘要

We constructed a closed solution for a bimaterial plane consisting of two dissimilar piezoelectric half-planes with a periodic system of electrically permeable cracks at the interface between these materials. The presence of zones of smooth contact of the crack lips near their tips was taken into account. By rep-resenting the characteristics of electromechanical fields via piecewise analytic functions, we reduced the problem to a Dirichlet-Riemann periodic problem, which was solved exactly. As a result of numerical analysis of the derived solution, we studied the dependence of the relative length of the contact zones and stress intensity factors on the ratio between the crack length and period for different combinations of piezoelectric materials.