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Model refinements and experimental testing of highly flexible piezoelectric energy harvesters

Patel, R.; Tanaka, Y.; McWilliam, Stewart; Mutsuda, H.; Popov, Atanas A.

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Authors

R. Patel

Y. Tanaka

H. Mutsuda

Atanas A. Popov



Abstract

This paper addresses limitations to existing analytical models for piezoelectric energy harvesters. The presented model is targeted at predicting behaviours of highly flexible piezoelectric devices (FPEDs) and includes high orders of substrate and piezoelectric material nonlinearity, geometric nonlinearity, and additionally the effects of both self-weight and pre-stress. Validation through experimental testing is provided.

The influence of self-weight on vibratory dynamics becomes important in FPEDs due to both material composition and dimension. The developed model facilitates the simulation of FPED performance mounted at specified angles to the horizontal. In one study, for a FPED of 120 mm in length, the resonant frequency changed by over 30 percent with mounting angle. Consideration of mounting orientation is advised as self-weight increases damping and significantly lowers FPED performance – over a 50 percent reduction in one presented case.

Citation

Patel, R., Tanaka, Y., McWilliam, S., Mutsuda, H., & Popov, A. A. (2016). Model refinements and experimental testing of highly flexible piezoelectric energy harvesters. Journal of Sound and Vibration, 368, https://doi.org/10.1016/j.jsv.2016.01.005

Journal Article Type Article
Acceptance Date Jan 6, 2016
Online Publication Date Jan 29, 2016
Publication Date Apr 28, 2016
Deposit Date Feb 26, 2018
Publicly Available Date Mar 28, 2024
Journal Journal of Sound and Vibration
Print ISSN 0022-460X
Electronic ISSN 0022-460X
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 368
DOI https://doi.org/10.1016/j.jsv.2016.01.005
Keywords Energy harvesting; Flexible device; Piezoelectric beam;
Self-weight; Pre-stress; Initial curvature
Public URL https://nottingham-repository.worktribe.com/output/783401
Publisher URL https://www.sciencedirect.com/science/article/pii/S0022460X1600033X

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