Prediction of the Stribeck curve under full-film Elastohydrodynamic Lubrication

Y. Zhang, N. Biboulet, C.H. Venner, A.A. Lubrecht

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    The Stribeck curve shows the friction coefficient as a function of speed, viscosity and load. The viscosity times speed over load parameter can be interpreted as a film thickness. The film thickness over roughness parameter unifies friction curves in the isoviscous rigid regime. In this paper, the Stribeck curve is predicted numerically in the full-film Elastohydrodynamic Lubrication regime. It is shown that the lambda ratio is not the most appropriate parameter. A more elaborate parameter including the operating conditions and based on the Amplitude Reduction Theory [1] gives much better results. For a complex surface topography, the full numerical simulation is time-consuming. A rapid prediction method is proposed. Good agreement is found between the full numerical simulation and the prediction.
    Original languageEnglish
    JournalTribology international
    Early online date29 Jan 2019
    Publication statusE-pub ahead of print/First online - 29 Jan 2019

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