Mechanism of direct contact and numerical model for analysis of line contact mixed elastohydrodynamic lubrication in pure rolling conditions

Kazunori Ichimaru, Takehiro Morita

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    1 Citation (Scopus)

    Abstract

    Numerical analyses of mixed EHL were carried out using three different analysis models for the line contact between a smooth surface and a rough surface with a single transverse sinusoidal bump. The transient Reynolds equation expressed on the coordinate system, of which the origin is fixed to the center of the Hertz contact conjunction, which is used so far in EHL or micro-EHL analyses, was inadequate for analyzing of severe asperity interactions in mixed elastohydrodynamic conditions. A hybrid model that presupposes a differentiated application of a Reynolds equation for a local coordinate system moving with asperity and a global Reynolds equation was proposed as a numerical analysis model for mixed EHL, which was enough to eliminate the aforementioned demerits. Applying the hybrid model obtained physically reasonable results both on a global and local scale.

    Original languageEnglish
    Pages (from-to)49-62
    Number of pages14
    JournalJapanese Journal of Tribology
    Volume49
    Issue number1
    Publication statusPublished - Jan 1 2004

    All Science Journal Classification (ASJC) codes

    • Mechanics of Materials
    • Mechanical Engineering
    • Surfaces, Coatings and Films
    • Materials Chemistry

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