Film thickness in point contacts under generalized Newtonian EHL conditions: Numerical and experimental analysis |
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Authors: | A.D. Chapkov S. Bair P. Cann A.A. Lubrecht |
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Affiliation: | aLaMCoS, INSA Lyon, UMR CNRS 5514, France;bGeorge W. Woodruff School of Mechanical Engineering, Georgia Tech., USA;cTribology Group, Imperial College London, UK |
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Abstract: | The current paper contributes to the understanding of the behaviour of a smooth point EHL contact with a generalized Newtonian lubricant under pure rolling. The film thickness distribution was computed using a numerical simulation with measured rheological lubricant properties. The numerical predictions, obtained solving the generalized Reynolds equation were compared with film thicknesses measured in an optical ball-on-disc device. The numerical results correctly predict the absolute film thickness and the film thickness increase with rolling speed. |
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Keywords: | EHL film thickness Rheology Interferometry Numerical simulation Viscosity measurement |
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