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Shape dependence of resonant characteristics in exponentially tapered piezoelectric bimorph

Published online by Cambridge University Press:  27 January 2014

Jungsoon Kim ,
Kanglyeol Ha  and
Moojoon Kim
Jungsoon Kim
Affiliation:
Department of Media Engineering, Tongmyong University, Busan 608-711, Korea
Kanglyeol Ha
Affiliation:
Department of Physics, Pukyong National University, Busan 608-737, Korea
Moojoon Kim*
Affiliation:
Department of Physics, Pukyong National University, Busan 608-737, Korea
*
ae-mail: [email protected]
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Abstract

An analytical method is proposed to address, the effects of geometry variations in piezoelectric bimorph actuators and the theory is applied to an actuator with an exponential tapered shape. Through five different examples, it is demonstrated, through theoretically calculated electric admittance spectra, that for a fixed length, the resonant frequency can be tailored by changing the tapering rate of the actuator. The theoretical predictions were also experimentally verified and excellent agreement was found. Our theoretical model provides a conventional tool for design optimization of such tapered bimorph actuators.

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 65 , Issue 1 , January 2014 , 10102
Copyright
© EDP Sciences, 2014

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