Tribology and Lubricants

Korean Tribology Society (한국트라이볼로지학회)
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Thin Film Elastohydrodynamic Lubrication of Nanometer Scale

나노미터 크기 유막에서의 탄성유체윤활

  • 장시열 (국민대학교 기계 자동차 공학부)
  • Published : 1998.03.01
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Abstract

In many practical lubricated contacts such as a rough concentrated contact on the sliding of nominally flat surfaces, the fluid may be of molecular (nanometer) scale owing to the asperity interactions on the surfaces. Under this condition, there is insufficient lubricant on the concentrated contact spot to maintain a realistic continuum. Rheological behavior for this kind of concentrated contact has been studied extensively to know whether the application of viscous fluid model is appropriate. The interaction of two rough surfaces is simplified as perfectly flat-rough surfaces contact under certain conditions by "composite topography" and for a nanometer scale fluid film, three kinds of rheological fluid behavior are analyzed in elastohydrodynamic asperity point contact.t contact.

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References

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