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research-article

Optimal Locations of Piezoelectric Patch on Wideband Random Point-driven Beam for Energy Harvesting

[+] Author and Article Information
Xiaole Luan

State Key Laboratory of Fluid Power and Mechatronic Systems, Department of Engineering Mechanics, Zhejiang University, #38 Zheda Road, Hangzhou, Zhejiang, China
xiaole.luan@foxmail.com

Yong Wang

State Key Laboratory of Fluid Power and Mechatronic Systems, Department of Engineering Mechanics, Zhejiang University, #38 Zheda Road, Hangzhou, Zhejiang, China
ypwang@zju.edu.cn

Xiao-ling Jin

State Key Laboratory of Fluid Power and Mechatronic Systems, Department of Engineering Mechanics, Zhejiang University, #38 Zheda Road, Hangzhou, Zhejiang, China
xiaolingjin@zju.edu.cn

Z. L. Huang

State Key Laboratory of Fluid Power and Mechatronic Systems, Department of Engineering Mechanics, Zhejiang University, #38 Zheda Road, Hangzhou, Zhejiang, China
zlhuang@zju.edu.cn

1Corresponding author.

ASME doi:10.1115/1.4037508 History: Received October 26, 2016; Revised July 07, 2017

Abstract

Inspired by the phenomenon of localized response intensification in wideband random vibration, a novel procedure is proposed to determine the optimal locations of piezoelectric patch attaching on wideband random point-driven beam for vibration energy harvesting application. The optimization objective is to maximize the mean output voltage, and the optimal locations lie on the vicinities of the excited point and its symmetric point. The optimal locations keep invariable regardless of typical symmetric boundary conditions (such as the clamped, simply-supported, free and torsional spring supports), the lower and upper cut-off frequencies of the band-limited white noise and the external damping, provided that the excited point is not too close to boundaries and the bandwidth of excitation covers enough modes of primary structure. The robustness of optimal locations is illustrated from an electromechanical coupling model and is qualitatively verified through experimental testing on a random-excited Aluminum beam with piezoelectric patches attached on its surface.

Copyright (c) 2017 by ASME
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