Film thickness and asperity load formulas for line-contact elastohydrodynamic lubrication with provision for surface roughness

Document Type

Article

Publication Date

3-7-2012

Abstract

Three formulas are derived for predicting the central and the minimum film thickness as well as the asperity load ratio in line-contact EHL with provision for surface roughness. These expressions are based on the simultaneous solution to the modified Reynolds equation and surface deformation with consideration of elastic, plastic and elasto-plastic deformation of the surface asperities. The formulas cover a wide range of input and they are of the form f(W, U, G, σ, V), where the parameters represented are dimensionless load, speed, material, surface roughness and hardness, respectively. © 2012 American Society of Mechanical Engineers.

Publication Source (Journal or Book title)

Journal of Tribology

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