The University of Southampton
University of Southampton Institutional Repository

Free vibration characteristics of an isolation system with a spring relaxed damper

Record type: Conference or Workshop Item (Paper)

Vibration isolators are frequently represented by the classical Voigt model of a spring and viscous damper in parallel. In cases where this model is appropriate, isolation at high frequencies is compromised by transmission of forces through the damper. This drawback can be mitigated against to some extent by including a ‘relaxation’ spring in series with the damper. The forced response of this ‘Zener’ model is discussed in the literature. This paper is concerned with the free vibration characteristics of the Zener model. Analytical expressions are given for the roots of the characteristic equation and the root loci are presented. As the damping coefficient increases, the effective damping in the system is seen to rise, peak and then tend to zero as the damping coefficient tends to infinity. It is further shown that when the relaxation spring stiffness is less than precisely eight times the primary spring stiffness then critical damping cannot be achieved. Conversely, when this ratio of stiffnesses is greater than eight then two critical damping values exist and the damping ratio can no longer be defined in the conventional way. Alternative ways of quantifying damping for such a model are discussed.

Full text not available from this repository.

Citation

Carrella, A., Waters, T.P. and Brennan, M.J. (2005) Free vibration characteristics of an isolation system with a spring relaxed damper In Proceedings of the Twelfth International Congress on Sound and Vibrartion. 12th International Congress on Sound and Vibration. 8 pp.

More information

Published date: 2005
Additional Information: Paper 684
Venue - Dates: 12th International Congress on Sound and Vibration (ICSV12), 2005-07-11 - 2005-07-14

Identifiers

Local EPrints ID: 28507
URI: http://eprints.soton.ac.uk/id/eprint/28507
PURE UUID: 492223f1-3b35-4a09-a8bb-9939eb7ebec5

Catalogue record

Date deposited: 28 Apr 2006
Last modified: 17 Jul 2017 16:01

Export record

Contributors

Author: A. Carrella
Author: T.P. Waters
Author: M.J. Brennan

University divisions


Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×