To date, nearly all analyses of lubricant traction behavior in the Hertzian zone of concentrated contact have been performed with viscosity correlations which understate the effect of pressure and temperature at high pressures. We present viscometer measurements of lubricant viscosity for pressures to 1.4 GPa and temperatures to 165°C for various lubricants including automotive transmission fluids, aerospace lubricants, a turbine oil, and a metal working oil. Parameters of a free-volume correlation are provided for use in numerical modeling of traction, film thickness, and roughness interactions in concentrated contact.
The Variation of Viscosity With Temperature and Pressure for Various Real Lubricants
Contributed by the Tribology Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for presentation at the STLE/ASME Tribology Conference, Seattle, WA, October 1–4. Manuscript received by the Tribology Division Feb. 7, 2000; revised manuscript received June 27, 2000. Paper No. 2000-TRIB-25. Associate Editor: L. San Andre´s.
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Bair, S. (June 27, 2000). "The Variation of Viscosity With Temperature and Pressure for Various Real Lubricants." ASME. J. Tribol. April 2001; 123(2): 433–436. https://doi.org/10.1115/1.1308024
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