Central film thickness prediction for line contacts under pure impact

J. Wang, C.H. Venner, A.A. Lubrecht*

*Corresponding author for this work

    Research output: Contribution to journalArticleAcademicpeer-review

    11 Citations (Scopus)
    30 Downloads (Pure)


    The lubricant film thickness in lubricated rolling contacts can be predicted quantitatively, thanks to the work of Dowson, Higginson, Hamrock and others. However, most industrial applications are governed by time dependent operating conditions. For the most extreme time dependent case (impact), no film thickness predictions exist. The current work derives a dimensionless Reynolds line contact equation based on the Johnson dry contact impact analysis. It is shown that similar to the film thickness under rolling conditions, the Piezoviscous Elastic impact problem is governed by only 2 parameters. The numerical results are curve fitted to obtain a central film thickness predictive equation. 

    Original languageEnglish
    Pages (from-to)203-207
    Number of pages5
    JournalTribology international
    Publication statusPublished - 2013


    • EHL
    • Impact lubrication
    • Time dependent film thickness
    • 2023 OA procedure


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