Prediction of the Stribeck curve under full-film Elastohydrodynamic Lubrication

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

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    Abstract

    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
    Article number105569
    JournalTribology international
    Volume149
    Early online date29 Jan 2019
    DOIs
    Publication statusPublished - 1 Sept 2020

    Keywords

    • 2019 OA procedure

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