Nonlinear dynamic deflection and sound level in functionally graded piezoelectric actuators under AC electric fields

摘要：

We examine the nonlinear bending behavior of functionally graded piezoelectric actuators under AC electric fields in a combined numerical and experimental investigation. The functionally graded piezoelectric actuators consist of many thin soft PZT layers. The contribution of domain wall motion to the elastic compliance, piezoelectric coefficient and dielectric permittivity in PZT layers is evaluated, and a nonlinear finite element analysis is done to examine the effects of the amplitude and frequency of electric fields, number of layers, and property gradation on the deflection, sound level and internal stresses for actuators. In order to confirm the numerical results, bending tests on various functionally graded piezoelectric actuators are performed, and the deflection and sound level are measured.

作者: Yasuhide Shindo Fumio Narita Jun Nakagawa

作者单位: Department of Materials Processing, Graduate School of Engineering,Tohoku University, Sendai 980-8579, Japan

会议类型: 国际会议

会议名称: The 5th International Conference on Nonlinear Mechanics(第五届国际非线性力学会议)

会议地点: 上海

会议语种:英文

页码: 1628-1632

在线出版日期: 2007-06-11（万方平台首次上网日期，不代表论文的发表时间）