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Finite element modeling of Piezoelectric Energy Harvesters of cylindrical structure

Abstract

Finite element modeling of Piezoelectric Energy Harvesters of cylindrical structure

Le Van Duong

Incoming article date: 14.04.2015

This paper considers modeling of piezoelectric generator, which is an element of the devices of energy storage. The piezoelectric generator is a cylindrical coordinate with the attached proof mass. The device frame makes the vertical harmonic vibrations with the given amplitude and frequency. By developed models directly calculated in packages ANSYS and ACELAN, the dependence of the natural frequencies and the output voltage on the geometrical dimensions, material combinations. We numerically studied two cases: vibrations at the resonance frequency and vibrations in the low frequency region at the frequency which is much smaller frequency of the first resonance. In addition, we investigate simplified accounting model of the proof mass.

Keywords: