Transient EHD lubrication of concentrated line contacts. Part 1. Steady-state and pure squeeze cases

H.J. Leeuwen, van, G.A.A.V. Haagh, P.G.M. Bavel, van

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    Abstract

    This is the first part of a two parts paper on transient EHD lubrication of heavily loaded concentrated line contacts. The paper suggests a set of dimensionless groups reflecting the influence of (1) load, (2) hydrodynamic action, and (3) periodicity of the duty cycle on film thickness and pressure. Local squeeze effects are retained in Reynolds' equation. Further model details are as usual for classic steady-state EHD lubrication. The Reynolds equation is linearised by evaluating the nonlinear terms at a previous time step. All equations are expressed in unknown pressures. The Finite Difference Method was employed to solve the resulting set of equations. Since squeeze action is included, steady-state and normal approach can be considered as special solutions to the general case. In this first part the numeric code is tested against previously published results. Excellent agreement in the film thickness was found for the stationary case. A quantitative comparison for the normal approach case is problematic, due to model differences. Qualitative agreement is good.
    Original languageEnglish
    Title of host publicationLubricants and lubrication : proceedings of the 21st Leeds-Lyon symposium on tribology held at the Institute of Tribology, University of Leeds, UK, 6-9 September 1994
    EditorsD. Dowson, T. Childs
    Place of PublicationAmsterdam
    PublisherElsevier
    Pages525-543
    ISBN (Print)0-444-82263-1
    Publication statusPublished - 1995

    Publication series

    NameTribology series
    Volume30
    ISSN (Print)0167-8922

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