Proceedings of the KSME Conference (대한기계학회:학술대회논문집)
- 2003.11a
- /
- Pages.1378-1383
- /
- 2003
One-Dimensional Modeling For Nonlinear Behavior of Ferroelectric Materials
강유전체의 비선형 거동에 대한 1차원 모델링
Abstract
A ferroelectric (called piezoelectric afterwards) wafer has been widely used as a key component of actuators or sensors of a layer type. According to recent researches, the piezoelectric wafer behaves in a nonlinear way under excessive electro-mechanical loadings. In the present paper, one-dimensional constitutive equations for the nonlinear behavior of a piezoelectric wafer are proposed based on the principles of thermodynamics and a simple viscoplasticity theory. The predictions of the developed model are compared with experimental observations.
Keywords