Integrating PZT Layer with Tuned Mass Damper for Simultaneous Vibration Suppression and Energy Harvesting Considering Exciter Dynamics: An Analytical and Experimental Study
M Rezaei, R Talebitooti (Iran University of Science and Technology, Iran), W-H Liao (The Chinese University of Hong Kong, Hong Kong, China) & MI Friswell (Swansea University)
Journal of Sound and Vibration, Vol. 546, 3 March 2023, paper 117413
Abstract
This paper analytically and experimentally investigates the potential of a tuned mass
damper (TMD) with an integrated piezoelectric layer for simultaneous energy
harvesting and vibration suppression. The system investigated is composed of a main
beam that is excited by a shaker. A TMD comprising a unimorph piezoelectric beam is
attached to the main beam. The shaker force drops at the system resonance
frequencies means that a constant force sine sweep is difficult in practice, and does
not allow model validation and empirical assessment of the TMD. Also, the force drop
off phenomenon and an accurate validated shaker model are vital for the modelling,
analysis and validation of nonlinear dynamic systems. This paper validates and
analyses a linear model, in preparation for future studies of a nonlinear vibration
absorber and energy harvester. Therefore, the force drop off phenomenon is examined
comprehensively, and a constant shaker input voltage sweep is proposed instead of a
constant force sweep. The continuous electromechanical equations governing the
coupled system of the main beam-TMD-shaker are developed. The proposed model is
then utilized to examine the shaker force drop off, TMD efficiency, and shaker electrical
characteristics. The results show that the constant voltage sweep works well to
investigate the performance of the TMD and capture the shaker force drop off
phenomenon. The TMD suppresses the host structure vibration and harvests energy
efficiently, and is demonstrated by extensive experimental investigations. The model is
validated by the experiments, including the force drop off. The system parameters have
significant effects on the dynamical response of the coupled system and the energy
harvested; the effects on the harvested power, reduced vibration, applied force, and
force drop off frequencies are demonstrated. Overall, the TMD is shown to be efficient
and applicable in reducing vibration and harvesting energy.
Paper Availability
This material has been published in the Journal of Sound and Vibration, Vol. 546, 3 March 2023, paper 117413. Unfortunately the copyright agreement with Elsevier does not allow for the PDF file of the paper to be available on this website. However the paper is available from ScienceDirect - see the link below.
Link to paper using doi: 10.1016/j.jsv.2022.117413
Journal of Sound and Vibration on ScienceDirect
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