Proceedings of the KSME Conference (대한기계학회:학술대회논문집)
- 2001.06a
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- Pages.435-440
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- 2001
Finite element modeling for nonlinear behavior of piezoelectric solids
압전체의 비선형 거동에 대한 유한요소 모델링
- Kim, Sang-Joo (Univ. of Seoul, Dept. of Mech. and Info. Eng.) ;
- Kwak, Moon-Kyu (Dongguk University, Dept of Mech. Eng.)
- Published : 2001.06.27
Abstract
Piezoelectric solids such as PZT and PLZT have been widely used as sensors and actuators for various smart systems. One of the problems arising in actuator applications is that a larger actuation force needs to be produced from a small system. This naturally leads to local electric field or stress concentration and thereby resulting in a nonlinear behavior inside the system, Hence, it becomes more important to predict the nonlinear behavior of piezoelectric solids. In this paper we investigate the mechanism of nonlinear behavior in those materials and suggest a constitutive and finite element model. The calculation results obtained from the model seem to be qualitatively consistent with experiments.
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