QSH WAVE PROPAGATION STUDY IN INFINITE FLEXOELECTRIC PIEZOELECTRIC MEDIUM

Abstract

The quasi-SH (QSH) wave propagating through a flexoelectric piezoelectric infinite space is investigated in this paper. With the consideration of the microstructure effects (i.e., the flexoelectric effects, strain gradient effects, and micro-inertial effects), the frequency dispersive equations of the QSH wave propagation in infinite flexoelectric piezoelectric materials are derived. The impacts of the flexoelectric coefficient, static characteristic length, and inertial characteristic length of the microstructure upon the dispersion curves of the QSH wave are discussed numerically. We obtained that these microstructure effects have distinct impacts upon the QSH wave velocity. In particular, the micro-inertia effects have different impacts on the dispersion characteristics of the QSH wave. The results can provide very promising theoretical support for future applications of flexoelectric composites.