There has been a long-standing need for a piezoviscous parameter that, together with the ambient viscosity , will completely quantify the Newtonian rheology so that the film thickness for liquids that do not shear-thin in the inlet may be calculated as , regardless of the details of the pressure-viscosity response. It seems that Blok’s reciprocal asymptotic isoviscous pressure has certain advantages over the conventional pressure-viscosity coefficient, which is poorly suited for this purpose. The first detailed review of piezoviscous models for low pressures is provided. A simulation code that is apparently stable for all realistic pressure-viscosity response was utilized with diverse piezoviscous models and model liquids to develop a satisfactory definition of that reads ; . In the case of and formulas are provided for other models.
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July 2006
Research Papers
The Pressure-Viscosity Coefficient for Newtonian EHL Film Thickness With General Piezoviscous Response
Scott Bair,
Scott Bair
G.W. Woodruff School of Mechanical Engineering, Center for High-Pressure Rheology,
Georgia Institute of Technology
, Atlanta, GA 30332-0405
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Yuchuan Liu,
Yuchuan Liu
MCC Mechanical Engineering,
Northwestern University
, 2145 Sheridan RD, #B224, Evanston, IL 60208
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Q. Jane Wang
Q. Jane Wang
MCC Mechanical Engineering,
Northwestern University
, 2145 Sheridan RD, #B224, Evanston, IL 60208
Search for other works by this author on:
Scott Bair
G.W. Woodruff School of Mechanical Engineering, Center for High-Pressure Rheology,
Georgia Institute of Technology
, Atlanta, GA 30332-0405
Yuchuan Liu
MCC Mechanical Engineering,
Northwestern University
, 2145 Sheridan RD, #B224, Evanston, IL 60208
Q. Jane Wang
MCC Mechanical Engineering,
Northwestern University
, 2145 Sheridan RD, #B224, Evanston, IL 60208J. Tribol. Jul 2006, 128(3): 624-631 (8 pages)
Published Online: March 3, 2006
Article history
Received:
November 14, 2005
Revised:
March 3, 2006
Citation
Bair, S., Liu, Y., and Wang, Q. J. (March 3, 2006). "The Pressure-Viscosity Coefficient for Newtonian EHL Film Thickness With General Piezoviscous Response." ASME. J. Tribol. July 2006; 128(3): 624–631. https://doi.org/10.1115/1.2197846
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