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http://dx.doi.org/10.5139/JKSAS.2004.32.3.037

Performance Analysis of LIPCA Actuator considering Material Non-linearity of embedded PZT wafer  

Lee, Sang-Ki (건국대학교 항공우주공학과 대학원)
Kim, Young-Sung (건국대학교 항공우주공학과 대학원)
Park, Hoon-Cheol (건국대학교 기계항공공학부)
Yoon, Kwang-Joon (건국대학교 기계항공공학부)
Goo, Nam-Seo (건국대학교 기계항공공학부)
Cho, Chahng-Min (국방과학연구소)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.32, no.3, 2004 , pp. 37-44 More about this Journal
Abstract
This paper deals with the performance analysis of LIPCA(Light-weight Piezo-Composite actuator) including the material nun-linearity of the embedded 3203HD PZT wafer. For this analysis, we used a piezo-shell element code based on a nine-node assumed strain shell element formulation. The material non-linearity was implemented in the formulation due to a large observed discrepancy between the measured displacement and the computed actuation displacement based on the linear analysis. An experimentally extracted piezo-strain function of the PZT wafer and incremental formulation were incorporated into the linear finite element code to improve the accuracy of the estimated actuation displacement of the LIPCA. The non-linear piezo-shell program was used to predict the non-linear performance of the LIPCA. The simulated actuation displacement from the non-linear code showed much better agreement with the measured data.
Keywords
Piezo-strain; Material non-linear; LIPCA; Shell element; Finite element method;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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