Analytical and experimental study of nonlinear bending response and domain wall motion in piezoelectric laminated actuators under ac electric fields
Analytical and experimental study of nonlinear bending response and domain wall motion in piezoelectric laminated actuators under ac electric fields
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DOI：
10.1016/j.actamat.2005.05.044
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发表时间：
2005-10
期刊：
影响因子：
9.4
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
我们研究了压电层合致动器的非线性弯曲行为作为一个功能的振幅和频率的大电场的分析和实验。将层合梁理论扩展到悬臂压电/金属/压电驱动器，并分析了交流电场对尖端偏转的影响。一个简单的唯象模型的振动畴壁在电场中使用，和宏观致动器的响应进行预测。一个非线性三维有限元分析。实验结果验证了预测使用双压电晶片型弯曲致动器与薄软锆钛酸铅（PZT）层和薄金属片。计算结果与实验数据吻合较好，并支持畴壁运动在交流电场下软PZT非线性材料响应中的作用。
We investigate the nonlinear bending behavior of piezoelectric laminated actuators as a function of the amplitude and frequency of large electric fields both analytically and experimentally. Laminated beam theory is expanded to allow for the cantilever piezoelectric/metal/piezoelectric actuator, and the effects of alternating current (ac) electric fields on the tip deflection are analyzed. A simple phenomenological model of a vibrating domain wall in electric fields is used, and the macroscopic actuator response is predicted. A nonlinear three-dimensional finite element analysis is also employed. Experimental results are presented to validate the predictions using bimorph-type bending actuators made with thin soft lead zirconate titanate (PZT) layers and a thin metal sheet. Calculations show reasonable agreement with the experimental data, and support a role for domain wall motion in the nonlinear material response of the soft PZT under ac electric fields.