Electroelastic field concentrations and polarization switching induced by circular electrode at the interface of piezoelectric disk composites
Electroelastic field concentrations and polarization switching induced by circular electrode at the interface of piezoelectric disk composites
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DOI：
10.1016/j.euromechsol.2006.07.001
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发表时间：
2007-05
影响因子：
4.1
通讯作者：
F. Narita;Y. Shindo;M. Mikami
中科院分区：
文献类型：
--
作者：
F. Narita;Y. Shindo;M. Mikami
讨论了圆形电极在压电片复合材料界面处引起的机电场集中。本文由两部分组成。在第一部分中，利用汉克尔变换，提出了两种不同类型半无限压电固体的界面内嵌电极问题，并对其进行了精确求解。在第二部分中，通过引入局部电场集中区域的极化开关模型，对界面处含有圆形电极的压电片复合材料的机电响应进行了有限元分析。在电极上施加的电压和应变之间观察到局域极化开关引起的非线性行为。
The electromechanical field concentrations due to circular electrode at the interface of piezoelectric disk composites have been discussed. This paper consists of two parts. In the first part, the problem of an internal electrode embedded at the interface of two dissimilar semi-infinite piezoelectric solids was formulated by means of Hankel transforms, and the solution was solved exactly. In the second part, finite element analysis was carried out to study electromechanical response in piezoelectric disk composites containing a circular electrode at the interface by introducing a model for polarization switching in local areas of field concentrations. A nonlinear behavior induced by localized polarization switching was observed between the strain and the voltage applied to the electrode.