Contact dynamics of EHL contacts with time varying operating conditions

C.H. Venner*, G. Popovici, Y.H. Wijnant

*Corresponding author for this work

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

    4 Citations (Scopus)


    By means of numerical simulations of two situations with time varying operating conditions it is shown that the dynamic behaviour of Elasto-Hydrodynamically Lubricated contacts in terms of vibrations can be characterized as: Changes in the mutual approach lead to film thickness changes in the inlet which are propagated through the film at the momentary entrainment speed. The mutual approach of the two contacting bodies is determined by the equation of motion. The frequency of oscillations that occur can accurately be predicted from a simplified analysis based on a Hertzian dry contact. The amplitude of the induced film thickness oscilations depends on the elastic: properties of the loading system and on the amount of lubricant supplied. The damping depends on the lubricant properties and on the degree of starvation. The computations were carried out for the configuration of a ball on disk apparatus for which experimental results have been published.

    Original languageEnglish
    Title of host publicationTransient Processes in Tribology
    Subtitle of host publicationProceedings of the 30th Leeds-Lyon Symposium on Tribology 2-8 September 2003, INSA de Lyon Villeurbanne, France
    EditorsG. Dalmaz, A.A. Lubrecht, D. Dowson, M. Priest
    Number of pages12
    ISBN (Print)978-0-444-51706-7
    Publication statusPublished - 2003
    Event30th Leeds-Lyon Symposium on Tribology 2003 - INSA, Lyon, France
    Duration: 2 Sept 20038 Sept 2003
    Conference number: 30

    Publication series

    NameTribology Series
    ISSN (Print)0167-8922


    Conference30th Leeds-Lyon Symposium on Tribology 2003


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