Finite element analysis of Bi-stable plates for piezoelectric energy harvesting

6th Annual International Conference on Material Science and Engineering

Chen, Lihua^1 ; Chen, Tan^1 ; Zhang, Wei^1

College of Mechanical Engineering, Beijing University of Technology, Beijing

100124, China^1

关键词: Bistables;    Core part;    Mass block;    Output voltages;    Piezoelectric energy harvesting;    Piezoelectric layers;    Piezoelectric technology;    Research focus;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/397/1/012134/pdf
DOI  :  10.1088/1757-899X/397/1/012134

来源: IOP

【 摘 要 】

In order to increase the output voltage of piezoelectric energy harvesting, this paper mainly discusses bi-stable plates for piezoelectric energy harvesting, and its property is analyzed with finite element analysis. The device changes kinetic energy into electrical one, whose core part comprises a substrate, a piezoelectric layer, mass block and the electrode. The research focuses on firstly examining the effect of the area of piezoelectric layer, the temperature and the mass block on the natural frequency of the system, and then analyzing the effect of laying type and area of piezoelectric layer on the output voltage of the system. Eventually a new structure of bi-stable piezoelectric energy harvesting is put forward to improve its harvesting efficiency. This conclusion can be used to provide a theoretical basis for application of piezoelectric technology in engineering.