Friction-induced instabilities can be caused by different separate mechanisms such as elastodynamic or thermoelastic. This paper suggests another type of instability due to the temperature dependency of the coefficient of friction. The perturbations imposed on the surface temperature field during the frictional sliding can grow or decay. A stability criterion is formulated and a case study of a brake disk is performed with a simple model without including effects of transforming layer and chemical/physical properties change with temperature. The disk is rigid and the coefficient of friction depends on temperature. We show that the mechanism of instability can contribute to poor reproducibility of aircraft disk brake tests reported in the literature. We propose a method to increase the reproducibility by dividing the disk into several sectors with decreased thermal conductivity between the sectors.
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e-mail: nosonovs@uwm.edu
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October 2012
Friction And Wear
Stability of Frictional Sliding With the Coefficient of Friction Depended on the Temperature
Vahid Mortazavi,
Vahid Mortazavi
Department of Mechanical Engineering,
University of Wisconsin
, Milwaukee, WI 53201
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Chuanfeng Wang,
Chuanfeng Wang
Department of Mechanical Engineering,
University of Wisconsin
, Milwaukee, WI 53201
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Michael Nosonovsky
Michael Nosonovsky
Department of Mechanical Engineering,
e-mail: nosonovs@uwm.edu
University of Wisconsin
, Milwaukee, WI 53201
Search for other works by this author on:
Vahid Mortazavi
Department of Mechanical Engineering,
University of Wisconsin
, Milwaukee, WI 53201
Chuanfeng Wang
Department of Mechanical Engineering,
University of Wisconsin
, Milwaukee, WI 53201
Michael Nosonovsky
Department of Mechanical Engineering,
University of Wisconsin
, Milwaukee, WI 53201e-mail: nosonovs@uwm.edu
J. Tribol. Oct 2012, 134(4): 041601 (7 pages)
Published Online: August 21, 2012
Article history
Received:
August 23, 2011
Revised:
March 21, 2012
Online:
August 21, 2012
Published:
August 21, 2012
Citation
Mortazavi, V., Wang, C., and Nosonovsky, M. (August 21, 2012). "Stability of Frictional Sliding With the Coefficient of Friction Depended on the Temperature." ASME. J. Tribol. October 2012; 134(4): 041601. https://doi.org/10.1115/1.4006577
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