CUED Publications database

The frequency response of dynamic friction: Model comparisons

Woodhouse, J and Wang, SK (2011) The frequency response of dynamic friction: Model comparisons. Journal of the Mechanics and Physics of Solids, 59. pp. 2294-2306. ISSN 0022-5096

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Abstract

Any linearised theory of the initiation of friction-excited vibration via instability of the state of steady sliding requires information about the dynamic friction force in the form of a frequency response function for sliding friction. Recent measurements of this function for an interface consisting of a nylon pin against a glass disc are used to probe the underlying constitutive law. Results are compared to linearised predictions from the simplest ratestate model of friction, and a ratetemperature model. In both cases the observed variation with frequency is not compatible with the model predictions, although there are some significant points of similarity. The most striking result relates to variation of the normal load: any theory embodying the Coulomb relation F∝N would predict behaviour entirely at variance with the measurements, even though the steady friction force obtained during the same measurements does follow the Coulomb law. © 2011 Elsevier Ltd. All rights reserved.

Item Type: Article
Uncontrolled Keywords: Constitutive behaviour Dynamics Friction Vibrations
Subjects: UNSPECIFIED
Divisions: Div C > Applied Mechanics
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 11:31
Last Modified: 22 Dec 2014 01:17
DOI: 10.1016/j.jmps.2011.08.006