期刊
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
卷 25, 期 12, 页码 2467-2470出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2005.03.083
关键词
ATILA; actuators; PZT; piezoelectric properties
In this paper, the correspondence between ATILA-simutated and measured values of two piezoelectric ceramic structures, bulk and RAINBOW actuators, was determined. Modelling was started by creating a 2D wire model of the structures, after which a 3D model was created and simulation parameters were introduced (electric potentials, polarizations and boundary conditions). Harmonic type analysis was used in the simulations. The results obtained from the simulations contained information about displacements in the z-axis direction. Displacements of the measured structures behaved nonlinearly as a function of the electric field. Accordingly, effective piezoelectric coefficients (i.e. d(31), d(33)) calculated front the electric field and the displacement also changed nonlinearly. However, the displacement results acquired from simulations are linear, since the ATILA program uses a linear approach for in the calculation. This causes the modelling results to differ from the measurement results, especially when large voltages are used. The problem was solved by modifying the constant parameters used in the simulations. In-the study reported here, relative permittivity K(33), piezoelectric coefficient d33 and approximated piezoelectric coefficient d(31) were used to obtain more accurate modelling results corresponding to the measurement results. The differences in the z-axis displacements between the modelling (using the original material parameters) and measurement results obtained with bulk and RAINBOW actuators were 6.5-17.7% and 6.0-27.9%, respectively. With modified material parameters, the differences were 1.1-1.6% and 3.1-8.5%, respectively. (c) 2005 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据