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http://dx.doi.org/10.5139/JKSAS.2004.32.4.018

Finite element analysis of the PZT 3203HD bimorph beam actuator based on material non-linear characteristics  

Jang, Sung-Hoon (건국대학교 항공우주공학과 대학원)
Kim, Young-Sung (건국대학교 항공우주공학과 대학원)
Lee, Sang-Ki (건국대학교 항공우주공학과 대학원)
Park, Hoon-Cheol (건국대학교 항공우주공학과)
Yoon, Kwang-Joon (건국대학교 항공우주공학과)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.32, no.4, 2004 , pp. 18-23 More about this Journal
Abstract
In this paper, material non-linear behavior of PZT wafer(3203HD, CTS) under high electric field and stress is experimentally investigated and the non-linearity of the PZT wafer is numerically simulated. Empirical functions that can represent the non-linear behavior of the PZT wafer have been extracted based on the measured piezo-strain under stress. The functions are implemented in an incremental finite element formulation for material non-linear analysis. New definition of the piezoelectric constant and the incremental strain are incorporated into the finite element formulation for a better reproduction of the non-linear behavior. With the new definition of the in incremental piero-strain the measured non-linear behavior of the PZT wafer has been accurately reproduced even for high electric field. For validation of the measured non-linear characteristics and the proposed approach, a PZT bimorph beam actuator has been numerically and experimentally tested. The predicted actuation displacement, based on the material nonlinear finite element analysis, showed a good agreement with the measured one.
Keywords
Material non-linear; PZT wafer; Piezoelectric constant; Incremental finite element analysis;
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Times Cited By KSCI : 1  (Citation Analysis)
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