Energy trapping in high-frequency vibrations of piezoelectric plates with partial mass layers under lateral electric field excitation

Bo Liu; Qing Jiang; Huimin Xie; Jiashi Yang

doi:10.1016/j.ultras.2010.11.003

Energy trapping in high-frequency vibrations of piezoelectric plates with partial mass layers under lateral electric field excitation

Ultrasonics. 2011 Apr;51(3):376-81. doi: 10.1016/j.ultras.2010.11.003. Epub 2010 Nov 24.

Authors

Bo Liu¹, Qing Jiang, Huimin Xie, Jiashi Yang

Affiliation

¹ Department of Mechanical Engineering, University of California, Riverside, CA 92521, USA.

PMID: 21145572
DOI: 10.1016/j.ultras.2010.11.003

Abstract

We study coupled face-shear (FS) and thickness-twist (TT) motions of a piezoelectric plate of monoclinic crystals with mass layers on the central parts of the plate surfaces. The plate is driven by a lateral electric field. Mindlin's first-order theory of piezoelectric plates is used. An analytical solution is obtained. Numerical results are presented for an AT-cut quartz plate, including the motional capacitance of the plate as a resonator and the vibration modes trapped under the mass layers in the central portion of the plate. The relationship between the dimension of the mass layers and the number of trapped modes is examined.

Publication types

Research Support, Non-U.S. Gov't