Investigating the effect of surface finish on mixed ehl in rolling and rolling-sliding contacts

Q. Jane Wang, Dong Zhu, Raosheng Zhou, Fukuo Hashimoto

Research output: Contribution to journalArticlepeer-review

36 Scopus citations


Surface finish may significantly affect the lubrication performance of a tribological interface through the influence of topography on micro/nanoscale fluid flows around localized contacts at surface asperities. This paper aims to study the mixed lubrication performance of a group of engineered surfaces, including turned, isotropically finished, ground, and dimpled surfaces, under different operation conditions by means of a deterministic mixed elastohydrodynamic lubrication (EHL) model. The honed surface was used to mate with other surfaces. The results indicate that a longitudinal contact ellipse favors longitudinally oriented mating surface roughness and that a transverse contact ellipse, as well as a line contact, prefers a transversely orientated mating surface roughness for lubrication enhancement.

Original languageEnglish (US)
Pages (from-to)748-761
Number of pages14
JournalTribology Transactions
Issue number6
StatePublished - 2008


  • EHL
  • Film Thickness
  • Micro-EHL
  • Surface Roughness

ASJC Scopus subject areas

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


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