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Vertically-Aligned Springless Energy Harvester

[+] Author Affiliations
Mohamed Bendame, Karim Elrayes, Eihab M. Abdel-Rahman, Ehab El-Saadany, Raafat Mansour

University of Waterloo, Waterloo, ON, Canada

Mohamed Mahmoud

Cairo University, Cairo, Egypt

Paper No. DETC2011-48371, pp. 309-315; 7 pages
  • ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 1: 23rd Biennial Conference on Mechanical Vibration and Noise, Parts A and B
  • Washington, DC, USA, August 28–31, 2011
  • Conference Sponsors: Design Engineering Division and Computers and Information in Engineering Division
  • ISBN: 978-0-7918-5478-5
  • Copyright © 2011 by ASME


This paper analyzes a new configuration of a recently proposed “springless” vibration energy harvester. In this study, the harvester is positioned so that its oscillations are aligned vertically acting against gravity. The MPG response is investigated experimentally. Test results show that the VEH behaves as a softening nonlinear oscillator even for small excitations. A mathematical model of the underlying impact oscillator is also derived and its parameters are estimated.

Copyright © 2011 by ASME



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