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Title: Nonlinear dynamics and performance enhancement of multi-stable wideband energy harvesting : theoretical analysis
Authors: Wang, C 
Yang, X 
Lai, SK 
Keywords: Energy harvesting system
Interwell motion
Multi-stable state
Issue Date: 2019
Publisher: Institute of Physics Publishing
Source: IOP conference series : materials science and engineering, 2019, v. 531, no. 1, 12040 How to cite?
Journal: IEEE access 
Abstract: A new multi-stable wideband harvester is proposed to increase the power density of energy harvesting under wide-bandwidth and low-frequency operations. This harvester can possess with an arbitrary multi-stable state by combining the nonlinearities of stopper-engaged cantilevers and magnetic forces. The harvesting efficiency can be enhanced by interwell oscillations and the global amplitude of the harvester is restricted by the cantilever-stopper engagement. An electromechanical coupling model of the proposed harvester is established to describe its dynamic characteristics. To explore the influence of potential well configurations on a multi-stable energy harvesting, the proposed harvester with four typical potential well configurations is considered while its equivalent nonlinear restoring force can be experimentally identified. The dynamic characteristics of these four configurations at different levels of a harmonic excitation will be explored by both numerical and experimental methods. It is expected that a multiple-well potential with non-uniform depths and shallower outer wells is much more suitable for the proposed system when the external excitation exceeds a critical intensity.
Description: Sustainable Built Environment Conference 2019, SBE 2019, Austria, 11-14 September 2019
ISSN: 1757-8981
EISSN: 1757-899X
DOI: 10.1088/1757-899X/531/1/012040
Rights: Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Published under license by IOP Publishing Ltd
The following publication C Wang et al 2019 IOP Conf. Ser.: Mater. Sci. Eng. 531 012040, is available at
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