Simply-supported multi-layered beams for energy harvesting

Patel, Rupesh and Tanaka, Yoshikazu and McWilliam, Stewart and Mutsuda, Hidemi and Popov, Atanas A. (2017) Simply-supported multi-layered beams for energy harvesting. Journal of Intelligent Material Systems and Structures, 28 (6). pp. 740-759. ISSN 1045-389X

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Abstract

This paper develops an analytical model for predicting the performance of simply-supported multi-layered piezoelectric vibrating energy harvesters. The model includes the effects of material and geometric nonlinearities, as well as axial pre-tension/compression, and is validated against experimental devices for a large range of base accelerations. Numerical and experimental investigations are performed to understand the benefits of using simply supported devices compared to cantilevered devices. Comparisons are made in an unbiased manner by tuning the resonant frequency to the same value by modifying the geometry, and the results obtained indicate that simply supported devices are capable of generating higher voltage levels than cantilever devices. The model is also used to investigate the benefits of using multi-layered devices to improve power density. Depending on harvester composition, power-per-unit-volume of piezoelectric material for a device is increased through the stacking of layers.

Item Type: Article
Keywords: Energy harvesting materials, Non-linearity, Piezoelectric beam, Multi-layered beam, Axial pre-tension/compression, Performance optimisation
Schools/Departments: University of Nottingham, UK > Faculty of Engineering
Identification Number: 10.1177/1045389X16657418
Depositing User: Eprints, Support
Date Deposited: 14 Sep 2017 12:36
Last Modified: 14 Oct 2017 16:14
URI: http://eprints.nottingham.ac.uk/id/eprint/46325

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