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| Design optimization of piezoelectric energy harvester subject to tip excitation
Juil Park, Soobum Lee* and Byung Man Kwak
The Journal of Mechanical Science and Technology, vol. 26, no. 1, pp.137-143, 2012
Abstract : 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.
Keyword : Energy harvesting; Piezoelectricity; PVDF; Vibration; Rotary motion; Tip excitation; Shape optimization |
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