Dynamic Propagation Characteristics of a Mode-III Interfacial Crack in Piezoelectric Bimaterials

This article presents the dynamic behavior of a semi-infinite interfacial crack in piezoelectric bimaterials under impact loading. With help transform methods (the Laplace transforms and Fourier transforms), problem is studied with Wiener–Hopf technique. strict proof guarantees feasibility this approach. The stress intensity factor electric displacement propagation characteristics are expressed. Finally, several classic numerical examples mentioned discussed to demonstrate that theoretical deduction highly accurate for analysis bimaterials. results show affected by electromechanical coupling coefficient. In addition, if velocity reaches generalized Raleigh wave speed, will disappear. Furthermore, given time, ratio load increases coefficient decreasing. Numerical presented highlight result.