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Shape optimization of joined cantilever beams as aeroelastic flutter energy harvester:

Shape optimization of joined cantilever beams as aeroelastic flutter energy harvester: In this study, flutter frequency of two joined cantilever beams used for energy harvesting has been investigated and optimized. Since there is a strong connection between the output power of the harvester and the system flutter frequency, maximizing flutter frequency increases the output energy significantly. The governing equations are developed using Euler–Bernoulli beam theory, and series method as an analytical approach is used for the solution. The obtained results were compared with the previous investigations, and effects of change in geometrical parameters are studied. The maximum flutter frequency is obtained using shape optimization for the tail beam. It is concluded that the optimized shape of the tail beam with constant length and volume causes significant increase in the flutter frequency, which improves the output power. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Wind Engineering SAGE

Shape optimization of joined cantilever beams as aeroelastic flutter energy harvester:

Shakouri, M; Outokesh, M
Wind Engineering , Volume OnlineFirst: 1 – Dec 9, 2019
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Publisher
SAGE
Copyright
Copyright © 2019 by SAGE Publications
ISSN
0309-524X
eISSN
2048-402X
DOI
10.1177/0309524X19891674
Publisher site
See Article on Publisher Site

Abstract

In this study, flutter frequency of two joined cantilever beams used for energy harvesting has been investigated and optimized. Since there is a strong connection between the output power of the harvester and the system flutter frequency, maximizing flutter frequency increases the output energy significantly. The governing equations are developed using Euler–Bernoulli beam theory, and series method as an analytical approach is used for the solution. The obtained results were compared with the previous investigations, and effects of change in geometrical parameters are studied. The maximum flutter frequency is obtained using shape optimization for the tail beam. It is concluded that the optimized shape of the tail beam with constant length and volume causes significant increase in the flutter frequency, which improves the output power.

Journal

Wind Engineering – SAGE

Published: Dec 9, 2019

Keywords: Renewable energy,wind energy harvesting,piezoelectric,flutter,joined beams

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