A simple but realistic dynamic friction model for the lubricated sliding contact is developed based on decoupling the steady and unsteady terms in Reynolds equation. The model realistically captures the physics of friction behavior both when speed is increased unidirectionally or when operating under oscillating condition. The model can simulate the transition from boundary to mixed to full film regimes as the speed is increased. Two different classes of simulations are performed to show the utility of the model: the so-called quasisteady, where the sliding velocity is varied very slowly, and the oscillating sliding velocity, where the friction coefficient exhibits a hysteresis type behavior. Both categories of simulation are verified by comparing the results with published experimental data.
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e-mail: khonsari@me.lsu.edu
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January 2010
Research Papers
On the Modeling of Quasi-Steady and Unsteady Dynamic Friction in Sliding Lubricated Line Contact
H. Sojoudi,
H. Sojoudi
Department of Mechanical Engineering,
Louisiana State University
, Patrick Taylor Hall, Baton Rouge, LA 70803
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M. M. Khonsari
M. M. Khonsari
Dow Chemical Endowed Chair in Rotating Machinery
Department of Mechanical Engineering,
e-mail: khonsari@me.lsu.edu
Louisiana State University
, Patrick Taylor Hall, Baton Rouge, LA 70803
Search for other works by this author on:
H. Sojoudi
Department of Mechanical Engineering,
Louisiana State University
, Patrick Taylor Hall, Baton Rouge, LA 70803
M. M. Khonsari
Dow Chemical Endowed Chair in Rotating Machinery
Department of Mechanical Engineering,
Louisiana State University
, Patrick Taylor Hall, Baton Rouge, LA 70803e-mail: khonsari@me.lsu.edu
J. Tribol. Jan 2010, 132(1): 012101 (9 pages)
Published Online: November 11, 2009
Article history
Received:
March 12, 2009
Revised:
August 27, 2009
Online:
November 11, 2009
Published:
November 11, 2009
Citation
Sojoudi, H., and Khonsari, M. M. (November 11, 2009). "On the Modeling of Quasi-Steady and Unsteady Dynamic Friction in Sliding Lubricated Line Contact." ASME. J. Tribol. January 2010; 132(1): 012101. https://doi.org/10.1115/1.4000272
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