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An exact analysis of a rectangular plate piezoelectric generator

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3 Author(s)
Jiashi Yang ; Key Lab. for Adv. Mater. & Rheological Properties of Minist. of Educ., Xiangtan Univ. ; Chen, Ziguang ; Yuantai Hu

We study thickness-twist vibration of a finite, piezoelectric plate of polarized ceramics or 6-mm crystals driven by surface mechanical loads. An exact solution from the three-dimensional equations of piezoelectricity is obtained. The plate is properly electroded and connected to a circuit such that an electric output is generated. The structure analyzed represents a piezoelectric generator for converting mechanical energy to electrical energy. Analytical expressions for the output voltage, current, power, efficiency, and power density are given. The basic behaviors of the generator are shown by numerical results

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Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on  (Volume:54 ,  Issue: 1 )