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Proceedings Paper

Behavior of unimorph rectangular piezoelectric diaphragm actuators
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Paper Abstract

This paper presents a study in which clamped unimorph rectangular piezoelectric diaphragms are analyzed to determine the importance of electrode patterning. There has been a great deal of interest in getting increased deflection out of smaller piezoelectric devices with lower input power. In previous work, it has been shown that a clamped circular diaphragm can generate much increased deflection in response to an electric loading when the electrode has a "regrouped" pattern. Regrouping refers to the process of segmenting the electrodes into regions that are electrically disconnected so that the corresponding polarity can be set in opposite directions. The rectangular diaphragm actuator is studied in this paper to determine the effects of electrode patterns and the shape of the piezoelectric layer on the actuator's static displacement. From the analytical results, it is shown that regrouping the electrode pattern on a rectangular actuator can increase deflection, and subsequently volumetric displacement, by many times.

Paper Details

Date Published: 5 April 2006
PDF: 11 pages
Proc. SPIE 6173, Smart Structures and Materials 2006: Smart Structures and Integrated Systems, 617302 (5 April 2006); doi: 10.1117/12.657524
Show Author Affiliations
Brad Boyerinas, Univ. of Pittsburgh (United States)
Changki Mo, SangJu National Univ. (South Korea)
William W. Clark, Univ. of Pittsburgh (United States)

Published in SPIE Proceedings Vol. 6173:
Smart Structures and Materials 2006: Smart Structures and Integrated Systems
Yuji Matsuzaki, Editor(s)

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