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Modelling and optimisation of a bimorph piezoelectric cantilever beam in an energy harvesting application

Gilbert, James; Liu, Jing-Sheng; Ooi, Beng Lee; Thein, Chung Ket

Authors

Jing-Sheng Liu

Beng Lee Ooi

Chung Ket Thein

Abstract

Piezoelectric materials are excellent transducers in converting vibrational energy into electrical energy, and vibration-based piezoelectric generators are seen as an enabling technology for wireless sensor networks, especially in self-powered devices. This paper proposes an alternative method for predicting the power output of a bimorph cantilever beam using a finite element method for both static and dynamic frequency analyses. Experiments are performed to validate the model and the simulation results. In addition, a novel approach is presented for optimising the structure of the bimorph cantilever beam, by which the power output is maximised and the structural volume is minimised simultaneously. Finally, the results of the optimised design are presented and compared with other designs.

Journal Article Type Article
Publication Date 2016-02
Journal Journal of engineering science & technology
Print ISSN 1823-4690
Peer Reviewed Peer Reviewed
Volume 11
Issue 2
Pages 212-227
Institution Citation Gilbert, J., Liu, J., Ooi, B. L., & Thein, C. K. (2016). Modelling and optimisation of a bimorph piezoelectric cantilever beam in an energy harvesting application. Journal of Engineering Science and Technology, 11(2), 212-227
Keywords Piezoelectric, Multi-disciplinary optimisation, Shape optimisation, Energy harvesting, Bimorph cantilever beam
Publisher URL http://jestec.taylors.edu.my/Vol%2011%20issue%202%20February%202016/Volume%20(11)%20Issue%20(2)%20212-%20227.pdf
Additional Information Copy of article first published in: Journal of engineering science & technology , 2016, v.11, issue 2

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