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An analytical approach for prediction of elastohydrodynamic friction with inlet shear heating and starvation

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Paouris, L, Rahmani, R, Theodossiades, S, Rahnejat, Homer ORCID: 0000-0003-2257-7102, Hunt, G and Barton, W (2016) An analytical approach for prediction of elastohydrodynamic friction with inlet shear heating and starvation. Tribology Letters, 64 (1). ISSN 1023-8883

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Official URL: http://dx.doi.org/10.1007/s11249-016-0740-5

Abstract

An analytical friction model is presented, predicting the coefficient of friction in elastohydrodynamic (EHD) contacts. Three fully formulated SAE 75W-90 axle lubricants are examined. The effect of inlet shear heating (ISH) and starvation is accounted for in the developed friction model. The film thickness and the predicted friction are compared with experimental measurements obtained through optical interferometry and use of a mini traction machine. The results indicate the significant contribution of ISH and starvation on both the film thickness and coefficient of friction. A strong interaction between those two phenomena is also demonstrated, along with their individual and combined contribution on the EHD friction.

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