On the elastohydrodynamic analysis of shear-thinning fluids

Document Type

Article

Publication Date

12-8-2007

Abstract

Realistic prediction of the characteristics of the elastohydrodynamic lubrication (EHL) contact requires consideration of the appropriate constitutive equation for the lubricant. In many applications, the lubricant exhibits a shear-thinning behaviour which significantly affects the film thickness. In this paper, we present a generalized formulation that can efficiently treat shear-thinning fluids with provision for compressibility in the EHL line contact. Specifically, the Carreau model and the sinh-law model are investigated. An extensive set of numerical solutions and comparison with experiments reveal that the Carreau equation properly captures the film thickness behaviour under both rolling and sliding conditions. © 2007 The Royal Society.

Publication Source (Journal or Book title)

Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences

First Page

3271

Last Page

3290

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