Energy harvesting in piezoelastic systems driven by random excitations

M. Borowiec, G. Litak, M. I. Friswell, S. F. Ali, S. Adhikari, A. W. Lees, O. Bilgen

Research output: Contribution to journalArticle

22 Scopus citations

Abstract

The inverted elastic beam is proposed as an energy harvester. The beam has a tip mass and piezoelectric layers which transduce the bending strains induced by the stochastic horizontal displacement into electrical charge. The efficiency of this nonlinear device is analyzed, focusing on the region of stochastic resonance where the beam motion has a large amplitude. Increasing the noise level allows the motion of the beam system to escape from single well oscillations and thus generate more power.

Original languageEnglish (US)
Article number1340006
JournalInternational Journal of Structural Stability and Dynamics
Volume13
Issue number7
DOIs
StatePublished - Jan 1 2013
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction
  • Aerospace Engineering
  • Ocean Engineering
  • Mechanical Engineering
  • Applied Mathematics

Keywords

  • Energy harvesting
  • bistable oscillator
  • cantilever beam
  • random excitation

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