Thickness-shear and thickness-twist modes in an oblate elliptical ceramic cylinder and energy trapping in contoured acoustic wave resonators

Author

Hui-jing He ; Jia-shi Yang ; Yi-Hua Huang

Author_Institution

Dept. of Mech. & Mater. Eng., Univ. of Nebraska-Lincoln, Lincoln, NE, USA

fYear

2012

fDate

23-25 Nov. 2012

Firstpage

365

Lastpage

368

Abstract

We study shear-horizontal motions of a piezoelectric ceramic cylinder with an oblate elliptical cross section and axial poling. Exact thickness-shear and thickness-twist vibration modes are obtained. These modes show energy trapping, i.e., the vibration is mainly confined near the thick, central region and decays to almost nothing near the edges. The results are useful for the understanding and design of contoured piezoelectric resonators for strong energy trapping.

Keywords

acoustic resonators; crystal resonators; piezoceramics; vibrations; axial poling; contoured acoustic wave resonators; contoured piezoelectric resonator design; energy trapping; oblate elliptical ceramic cylinder; oblate elliptical cross-section; piezoelectric ceramic cylinder; shear-horizontal motions; thickness-shear vibration modes; thickness-twist vibration modes; Acoustic waves; Ceramics; Charge carrier processes; Electric fields; Equations; Strain; Vibrations; Elliptic; Energy trapping; Resonator;

fLanguage

English

Publisher

ieee

Conference_Titel

Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA), 2012 Symposium on

Conference_Location

Shanghai

Print_ISBN

978-1-4673-4814-0

Type

conf

DOI

10.1109/SPAWDA.2012.6464110

Filename

6464110