The effect of noise on the response of a vertical cantilever beam energy harvester

Friswell, M. I., Bilgen, O., Ali, S. F., Litak, G. and Adhikari, S. (2015) The effect of noise on the response of a vertical cantilever beam energy harvester. ZAMM: Zeitschrift für Angewandte Mathematik und Mechanik, 95(5), pp. 433-443. (doi: 10.1002/zamm.201300183)

Full text not currently available from Enlighten.

Abstract

An energy harvesting concept has been proposed comprising a piezoelectric patch on a vertical cantilever beam with a tip mass. The cantilever beam is excited in the transverse direction at its base. This device is highly nonlinear with two potential wells for large tip masses, when the beam is buckled. For the pre-buckled case considered here, the stiffness is low and hence the displacement response is large, leading to multiple solutions to harmonic excitation that are exploited in the harvesting device. To maximise the energy harvested in systems with multiple solutions the higher amplitude response should be preferred. This paper investigates the amplitude of random noise excitation where the harvester is unable to sustain the high amplitude solution, and at some point will jump to the low amplitude solution. The investigation is performed on a validated model of the harvester and the effect is demonstrated experimentally.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Adhikari, Professor Sondipon
Authors: Friswell, M. I., Bilgen, O., Ali, S. F., Litak, G., and Adhikari, S.
College/School:College of Science and Engineering > School of Engineering > Infrastructure and Environment
Journal Name:ZAMM: Zeitschrift für Angewandte Mathematik und Mechanik
Publisher:Wiley
ISSN:0044-2267
ISSN (Online):1521-4001
Published Online:20 May 2014

University Staff: Request a correction | Enlighten Editors: Update this record