Design optimization of piezoelectric energy harvester subject to tip excitation

This research proposes a new design for a cantilever-type piezoelectric energy harvester in which a free tip is excited by any rotary motion of mechanical devices. A coupled field finite element model for the harvester is constructed using ANSYS and verification study is performed. Design optimizati...

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Bibliographic Details
Published inJournal of mechanical science and technology Vol. 26; no. 1; pp. 137 - 143
Main Authors Park, Juil, Lee, Soobum, Kwak, Byung Man
Format Journal Article
LanguageEnglish
Published Heidelberg Korean Society of Mechanical Engineers 01.01.2012
Springer Nature B.V
대한기계학회
Subjects
Control
Dynamical Systems
Engineering
Industrial and Production Engineering
Mechanical Engineering
Vibration
기계공학
Rotary motion
Vibration
Shape optimization
Piezoelectricity
Energy harvesting
PVDF
Tip excitation
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Summary:This research proposes a new design for a cantilever-type piezoelectric energy harvester in which a free tip is excited by any rotary motion of mechanical devices. A coupled field finite element model for the harvester is constructed using ANSYS and verification study is performed. Design optimization on the shape of the harvester is done to maximize output power. The design optimization result shows excellent performance when compared to a simple rectangular cantilever or the well-known tapered cantilever. The design results are prototyped and their improved performances are experimentally attested.
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G704-000058.2012.26.1.004
ISSN:1738-494X
1976-3824
DOI:10.1007/s12206-011-0910-1