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Abstract
A film thickness correction for shear-thinning in elastohydrodynamic contacts has been available that requires parameters obtained from flow curves generated for the specific liquid. For instances for which reduced accuracy is acceptable, a new rough film thickness correction has been formulated for pure rolling and a moderate amount of sliding based on Van Krevelen's graphical technique of estimating shear-thinning from the molecular weight. It has been shown to be useful for high-molecular-weight base oils, when lubricant specific shear-thinning data is absent, although it should most often overestimate the film thinning.
ACKNOWLEDGMENT
This work was supported by a grant from the Timken Company.
Presented at the 59th STLE Annual Meeting in Toronto, Ontario, Canada May 17-20, 2004
Final manuscript approved February 17, 2004
Review led by Robert Errichella
Notes
a For ρ= 900 kg/m3 and T=350 K.
