A mathematical model is developed for parametric investigation of the influence of the rheological properties of the lubricant on the thermohydrodynamic film conditions which occur in slider and journal bearings. The model is utilized for predicting the thickness of the shear zone in lubricating films with fixed geometry between the stationary and moving surfaces using a Bingham model with a shear yield stress which best fits the experimental pressure. It is found that the shear zone thickness is significantly smaller than the fluid film thickness in the lubrication zone and is of the same order of magnitude as that obtained by the empirical formula proposed by Wang and Seireg (1995) ASME J. Tribol., 117, p. 444. The results also suggest that the shear yield stress for the lubricating film is proportional to the pressure developed in the film within the range of the investigated cases. [S0742-4787(00)05101-8]
Thermohydrodynamic Lubrication Analysis Incorporating Bingham Rheological Model
Contributed by the Tribology Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS and presented at the STLE/ASME Tribology Conference, Orlando, FL, October 10–13, 1999. Manuscript received by the Tribology Division August 31, 1998; revised manuscript received December 22, 1998. Paper No. 99-Trib-49. Associate Technical Editor: B. O. Jacobson.
Kim , J. H., and Seireg , A. A. (December 22, 1998). "Thermohydrodynamic Lubrication Analysis Incorporating Bingham Rheological Model ." ASME. J. Tribol. January 2000; 122(1): 137–146. https://doi.org/10.1115/1.555336
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