Journal of Mechanical Science and Technology

, Volume 26, Issue 1, pp 137–143

Design optimization of piezoelectric energy harvester subject to tip excitation


DOI: 10.1007/s12206-011-0910-1

Cite this article as:
Park, J., Lee, S. & Kwak, B.M. J Mech Sci Technol (2012) 26: 137. doi:10.1007/s12206-011-0910-1


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.


Energy harvestingPiezoelectricityPVDFVibrationRotary motionTip excitationShape optimization

Copyright information

© The Korean Society of Mechanical Engineers and Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringKorea Advanced Institute of Science and TechnologyDaejeonKorea
  2. 2.Department of Aerospace and Mechanical EngineeringUniversity of Notre DameNotre DameUSA