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Computer modelling of the dynamic response of viscoelastic vibroisolators

Rongong, J.A. and Kazakoff, A.B. (2006) Computer modelling of the dynamic response of viscoelastic vibroisolators. Engineering Mechanics, 13 (1). pp. 19-30. ISSN 1210-2717

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Abstract

The paper investigates ways to model the response of vibro-isolation mounts that utilise viscoelastic materials. Simple models based on linear and nonlinear static stiffness are developed. Dynamic response is approximated through appropriate scaling of the viscoelastic Young’s modulus and use of the measured material loss factor. The approach is validated using cylindrical mounts made of polyurethane. The response of a 68 kg mass supported by two mounts and subjected to two different high-amplitude shock loads is predicted. Measured and predicted behaviour correlate closely of the nonlinear model while the linear model gives a reasonable representation. It is noted that the sensitivity of such mounts to temperature is high: the change in response associated with a temperature excursion of 10 °C is significantly greater than the inaccuracy involved with using the linear model.

Item Type: Article
Academic Units: The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Mechanical Engineering (Sheffield)
Depositing User: Mr Christopher Hardwick
Date Deposited: 25 Aug 2009 15:33
Last Modified: 08 Feb 2013 16:59
Published Version: http://www.im.fme.vutbr.cz/pdf/13_1_019.pdf
Status: Published
Publisher: Brno
Refereed: Yes
URI: http://eprints.whiterose.ac.uk/id/eprint/9213

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