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Energy dissipation prediction of particle dampers

Wong, C.X., Daniel, M.C. and Rongong, J.A. (2009) Energy dissipation prediction of particle dampers. Journal of Sound and Vibration, 319 (1-2). pp. 91-118. ISSN 0022-460X

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Abstract

This paper presents initial work on developing models for predicting particle dampers (PDs) behaviour using the Discrete Element Method (DEM). In the DEM approach, individual particles are typically represented as elements with mass and rotational inertia. Contacts between particles and with walls are represented using springs, dampers and sliding friction interfaces. In order to use DEM to predict damper behaviour adequately, it is important to identify representative models of the contact conditions. It is particularly important to get the appropriate trade-off between accuracy and computational efficiency as PDs have so many individual elements. In order to understand appropriate models, experimental work was carried out to understand interactions between the typically small (1.5–3 mm diameter) particles used. Measurements were made of coefficient of restitution and interface friction. These were used to give an indication of the level of uncertainty that the simplest (linear) models might assume. These data were used to predict energy dissipation in a PD via a DEM simulation. The results were compared with that of an experiment.

Item Type: Article
Copyright, Publisher and Additional Information: © 2008 Elsevier Ltd. This is an author produced version of a paper published in Journal of Sound and Vibration. Uploaded in accordance with the publisher's self archiving policy.
Institution: The University of Sheffield
Academic Units: The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Mechanical Engineering (Sheffield)
Depositing User: Sherpa Assistant
Date Deposited: 22 Jan 2009 10:05
Last Modified: 08 Feb 2013 16:57
Published Version: http://dx.doi.org/10.1016/j.jsv.2008.06.027
Status: Published
Publisher: Elsevier Ltd
Refereed: Yes
Identification Number: 10.1016/j.jsv.2008.06.027
URI: http://eprints.whiterose.ac.uk/id/eprint/5404

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