Design, modeling and experiments of broadband tristable galloping piezoelectric energy harvester

• 作者: Daniil Yurchenko Junlei Wang Linfeng Geng Shengxi Zhou Zhien Zhang Zhihui Lai
• 来源期刊: 力学学报（英文版）
• 年，卷（期）: 2020,（3）
• 页码范围: 592-605
• 页数: 14页
• 语种: 英文

摘要

Galloping based piezoelectric energy harvester is a kind of micro-environmental energy harvesting device based on flowinduced vibrations.A novel tristable galloping-based piezoelectric energy harvester is constructed by introducing a nonlinear magnetic force on the traditional galloping-based piezoelectric energy harvester.Based on Euler-Bernoulli beam theory and Kirchhoff's law,the corresponding aero-electromechanical model is proposed and validated by a series of wind tunnel experiments.The parametric study is performed to analyse the response of the tristable galloping-based piezoelectric energy harvester.Numerical results show that comparing with the galloping-based piezoelectric energy harvester,the mechanism of the tristable galloping-based piezoelectric energy harvester is more complex.With the increase of a wind speed,the vibration of the bluff body passes through three branches: intra-well oscillations,chaotic oscillations,and inter-well oscillations.The threshold wind speed of the presented harvester for efficiently harvesting energy is 1.0 m/s,which is decreased by 33％ compared with the galloping-based piezoelectric energy harvester.The maximum output power of the presented harvester is 0.73 mW at 7.0 m/s wind speed,which is increased by 35.3％.Compared with the traditional galloping-based piezoelectric energy harvester,the presented tristable galloping-based piezoelectric energy harvester has a better energy harvesting performance from flow-induced vibrations.

作者信息

序号	姓名	单位	发文数	被引次数	H指数	G指数
1	Junlei Wang		1	0	0.0	0.0
2	Linfeng Geng		1	0	0.0	0.0
3	Shengxi Zhou		1	0	0.0	0.0
4	Zhien Zhang		1	0	0.0	0.0
5	Zhihui Lai		1	0	0.0	0.0
6	Daniil Yurchenko		1	0	0.0	0.0