Modeling of a Bridge-Shaped Nonlinear Piezoelectric Energy Harvester
Name
[23298766 - Energy Harvesting and Systems] Modeling of a Bridge-Shaped Nonlinear Piezoelectric Energy Harvester.pdf
Description
Published version
Size
1.19 MB
Format
Adobe PDF
Checksum (MD5)
227aadd14d84cddd60f0ae7757c23b96
Author(s)
Gafforelli, Giacomo
Xu, Ruize
Corigliano, Alberto
Kim, Sang-Gook
Date Issued
July 2014
Journal
Energy Harvesting and Systems
Publisher
Walter de Gruyter GmbH
Citation
Gafforelli, Giacomo et al., "Modeling of a Bridge-Shaped Nonlinear Piezoelectric Energy Harvester." Energy Harvesting and Systems 1, 3-4 (December 2014): 179–187 doi. 10.1515/ehs-2014-0005 ©2014 Authors
Version
Final published version
Abstract
Abstract: Piezoelectric microelectromechanical systems (MEMS) energy harvesting is an attractive technology for harvesting small energy from ambient vibrations. Increasing the operating frequency bandwidth of such devices is one of the major challenges to be solved for real-world applications. A MEMS-scale doubly clamped nonlinear beam resonator has demonstrated very wide bandwidth and high-power density among the energy harvesters reported. In this paper, a first complete theoretical discussion of nonlinear resonance-based piezoelectric energy harvesting is provided. The sectional behavior of the beam has been studied through the Classical Lamination Theory (CLT) specifically modified to introduce the piezoelectric coupling and nonlinear Green-Lagrange strain tensor. A lumped parameter model has been built through Rayleigh–Ritz method and the resulting nonlinear coupled equations have been solved in the frequency domain through the Harmonic Balance Method (HBM). Finally, the influence of external load resistance on the dynamic behavior has been studied. The theoretical model shows that nonlinear resonant harvesters have much wider power bandwidth than that of linear resonators but their maximum power is still bounded by the mechanical damping as is the case for linear resonating harvesters. ©2014
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1515/EHS-2014-0005
