Nonlinear Dynamic Bending and Domain Wall Motion in Functionally Graded Piezoelectric Actuators under AC Electric Fields: Simulation and Experiment
Nonlinear Dynamic Bending and Domain Wall Motion in Functionally Graded Piezoelectric Actuators under AC Electric Fields: Simulation and Experiment
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DOI：
10.1299/jsmea.49.188
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发表时间：
2006-04
期刊：
影响因子：
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通讯作者：
Y. Shindo;F. Narita;M. Mikami;Fumitoshi Saito
中科院分区：
文献类型：
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作者：
Y. Shindo;F. Narita;M. Mikami;Fumitoshi Saito
本文介绍了我们的数值计算和实验研究的结果，由于畴壁运动的功能梯度压电致动器在交变电场下的非线性弯曲行为。采用三维非线性有限元法对悬臂梁式功能梯度压电驱动器的动态响应进行了数值模拟。采用畴壁运动的唯象模型进行计算，考察了交流电场幅值、频率、层数和性能梯度对功能梯度双晶片的挠度和内应力的影响。结果表明，由数值模型得到的挠度预测结果与相应的实验结果吻合良好。
This paper describes the results of our numerical and experimental studies of the nonlinear bending behavior due to domain wall motion in functionally graded piezoelectric actuator under alternating current electric fields. A nonlinear three-dimensional finite element method is employed to simulate the dynamic response of cantilever functionally graded piezoelectric actuator. A phenomenological model of domain wall motion is used in computation, and the effects of ac electric field amplitude and frequency, number of layers, and property gradation on the deflection and internal stresses of the functionally graded bimorphs are examined. It is shown that the predicted deflection results, obtained from the numerical model, agree well with the corresponding experimental results.