Energy Harvesting in Piezoelastic Systems Driven by Random Excitations
M Borowiec, G Litak (Technical University of Lublin, Poland), MI Friswell, SF Ali, S Adhikari, AW Lees & O Bilgen (Swansea University)
International Journal of Structural Stability and Dynamics, Vol. 13, No. 7, October 2013, paper 1340006
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.
This material has been published in the International Journal of Structural Stability and Dynamics, Vol. 13, No. 7, October 2013, paper 1340006 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/S0219455413400063
Link to paper on the journal website
International Journal of Structural Stability and Dynamics