@inproceedings{5d94dafa17ce45ffb928ba4db3bb2162,
title = "Performance of a randomly-excited nonlinear energy harvester in mono- And bi-stable potentials: An experimental investigation",
abstract = "This paper aims to experimentally investigate the influence of stiffness-type nonlinearities on the transduction of vibratory energy harvesters (VEHs) under random white and colored excitations. For the purpose of the study, an energy harvester consisting of a clamped-clamped piezoelectric beam bi-morph is considered. The shape of the harvester's potential function is altered by applying a static compressive axial load at one end of the beam. The axial load permits the harvester to operate with different potential energy characteristics;namely, the mono-stable (pre-buckling) and bi-stable (post-buckling) configurations. The performance of the harvester in both configurations is investigated and compared by tuning the harvester's oscillation frequencies around the static equilibria such that they have equal values in both scenarios. The harvester is then subjected to random base excitations of different levels, bandwidths, and center frequencies. The variance of the output voltage is measured across an arbitrary, purely resistive load and used for the purpose of performance comparison. Critical conclusions pertinent to the influence of the nonlinearity and relative performance in both configurations are presented and discussed.",
keywords = "Bi-stable, Energy harvesting, Monostable, Nonlinear, Random excitations",
author = "Ravindra Masana and Daqaq, {Mohammed F.}",
year = "2012",
doi = "10.1115/DETC2012-71451",
language = "English (US)",
isbn = "9780791845042",
series = "Proceedings of the ASME Design Engineering Technical Conference",
pages = "281--290",
booktitle = "ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE 2012",
note = "ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE 2012 ; Conference date: 12-08-2012 Through 12-08-2012",
}