Energy Harvesting from Vibrations of a Functionally Graded Beam due to Moving Loads and Moving Masses
Publication: Journal of Engineering Mechanics
Volume 143, Issue 9
Abstract
Based on the Euler–Bernoulli beam theory and the generalized Hamilton’s principle, this paper presents piezoelectric energy harvesting (PEH) from vibrations of a functionally graded (FG) beam induced by multimoving forces and multimoving masses. Various moving loads are analyzed by considering various parameters. The finite element method is used to analyze the electromechanical behavior of a piezoelectric harvester in a unimorph configuration. For the transient analysis, the Newmark’s explicit integration technique is adopted. It is assumed that material properties of the beam and piezoelectric patch vary continuously in the thickness direction according to the power-law form. The effects of different material distributions, velocities of the moving loads, and time lags between each moving load on the produced power are discussed. The present work shows that a remarkable electrical power can be generated from the vibrations of an FG beam subjected to moving loads and masses.
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©2017 American Society of Civil Engineers.
History
Received: Jun 23, 2016
Accepted: Jan 27, 2017
Published ahead of print: Apr 18, 2017
Published online: Apr 19, 2017
Published in print: Sep 1, 2017
Discussion open until: Sep 19, 2017
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