Ocean wave energy harvest using multi-piezoelectric cantilever beams

Journal article

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Publication Details

Author list: Tuma, Chuttipong; Phaoharuhansa, Danai

Publication year: 2020

Journal: International Journal of Mechanical Engineering and Robotics Research (2278-0149)

Volume number: 9

Issue number: 6

Start page: 911

End page: 916

Number of pages: 6

ISSN: 2278-0149

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85088874577&doi=10.18178%2fijmerr.9.6.911-916&partnerID=40&md5=a79b0b46e8bf6dfc672dc133fc6f05ce

Languages: English-Great Britain (EN-GB)

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Abstract

This study introduces finite element analysis to design multiple cantilever beams for ocean wave energy harvest. The ocean wave energy is transformed to vibration, and it will be converted to electricity by piezoelectric. The natural frequencies of the beams should be tuned as low frequency relative to ocean wave energy in Thailand. ?The natural frequencies of the beams are designed by finite element analysis such as 4.461, 8.479, 13.802, and 25.105 Hz, which are the frequencies of swaying and bending motions. The experiment result presents that power harvest from piezoelectric is related to the desired frequency. The suitable range of energy harvest is from 11 to 24 Hz. The error occurs about 3.4-5.8%, cause of which depends on stiffness of piezoelectric plate Then, the stiffness and the natural frequency of the beams may be slightly increased. © 2020 Int. J. Mech. Eng. Rob. Res.

Keywords

Multi-cantilever beams, Ocean wave energy