不同截面形状悬臂梁双晶压电振子发电能力建模与实验研究

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振动与冲击 ›› 2010, Vol. 29 ›› Issue (4) : 177-180.

论文

不同截面形状悬臂梁双晶压电振子发电能力建模与实验研究

单小彪;袁江波;谢涛;陈维山

作者信息 +

Modeling and experiment of different shape piezoelectric cantilevergenerators

Shan Xiao biao;Yuan Jiang bo; Xie Tao;Chen weishan

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文章历史 +

摘要

为了研究截面形状对悬臂梁双晶压电振子发电能力的影响，本文根据压电方程和热平衡原理分别建立了截面形状为矩形、梯形和三角形悬臂梁双晶压电振子压电发电的数学模型，对截面形状对压电梁发电能力的影响进行了数值模拟与有限元仿真分析，并进行了实验验证。研究结果表明，在相同压电材料体积下，三角形压电振子最大输出功率为4.5mW，约为矩形压电振子的3.3倍，三角形压电振子相比于矩形和梯形压电振子具有更大的发电能力，可有效提高有限体积下压电振子的输出特性。

Abstract

In order to enhance the energy-generating capability of a piezoelectric cantilever generator with given dimensions, the analysis models of the different shapes piezoelectric cantilevers were established. The effect of structural parameters as well as material properties of the piezoelectric cantilevers on energy generation was analyzed by finite element analysis. The research results show that the triangular piezoelectric cantilever has the largest output voltage and improves output characteristic.

导出引用

单小彪;袁江波;谢涛;陈维山. 不同截面形状悬臂梁双晶压电振子发电能力建模与实验研究[J]. 振动与冲击, 2010, 29(4): 177-180

Shan Xiao biao;Yuan Jiang bo;Xie Tao;Chen weishan. Modeling and experiment of different shape piezoelectric cantilevergenerators[J]. Journal of Vibration and Shock, 2010, 29(4): 177-180