Energy Harvesting in a Nonlinear Cantilever Piezoelastic Beam System Excited by Random Vertical Vibrations

M Borowiec, G Litak (Technical University of Lublin, Poland), MI Friswell & S Adhikari (Swansea University)

International Journal of Structural Stability and Dynamics, Vol. 14, No. 8, December 2014, paper 1440018

Abstract

The vertical elastic beam with vertical ambient excitation is proposed as an energy harvester. The beam has a tip mass and piezoelectric patches which transduce the bending strains induced by the stochastic force caused by vertical kinematic forcing into electrical charge. We focus on the region with a fairly large amplitude of voltage output where the beam overcomes the potential barrier. Increasing the noise level allows the transition from single well oscillations to inter-well stochastic jumps with more power generation.

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This material has been published in the International Journal of Structural Stability and Dynamics, Vol. 14, No. 8, December 2014, paper 1440018 the only definitive repository of the content that has been certified and accepted after peer review. Copyright and all rights therein are retained by World Scientific.


Link to paper using doi: 10.1142/S0219455414400185

Link to paper on the journal website

International Journal of Structural Stability and Dynamics