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Proceedings Paper

Vibration characteristics of a discal piezoelectric transducer with spiral interdigitated electrodes
Author(s): Chengliang Pan; Wei-Hsin Liao; Yongbin Liu; Zhihua Feng
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Paper Abstract

Torsional vibrations of circular tubes, rods, rings, and disks are widely used as operation modes of acoustic wave transducers in various piezoelectric devices. In this paper, a piezoelectric disk with spiral interdigitated electrodes is proposed to generate in-plane torsion in a simple and effective manner. Design and working principle of the torsional transducer are introduced. Vibration characteristics of the transducer with a constant spiral angle are studied. A simplified model is established to investigate the basic dynamic characteristics of torsional vibration accompanying with radial vibration. Electric admittance, resonant frequencies, and mode shapes with different boundary conditions are calculated. Resonant frequencies as functions of several structural parameters are discussed.

Paper Details

Date Published: 9 March 2014
PDF: 10 pages
Proc. SPIE 9057, Active and Passive Smart Structures and Integrated Systems 2014, 90571A (9 March 2014); doi: 10.1117/12.2046196
Show Author Affiliations
Chengliang Pan, Hefei Univ. of Technology (China)
Wei-Hsin Liao, The Chinese Univ. of Hong Kong (Hong Kong, China)
Yongbin Liu, Univ. of Science and Technology of China (China)
Anhui Univ. (China)
Zhihua Feng, Univ. of Science and Technology of China (China)

Published in SPIE Proceedings Vol. 9057:
Active and Passive Smart Structures and Integrated Systems 2014
Wei-Hsin Liao, Editor(s)

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