Effect of stiff coatings on EHL film thickness in point contacts

Yuchuan Liu*, Q Jane Wang, Dong Zhu

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

This study investigates the influences of coating material properties and coating thickness on lubricant film thickness based on a point-contact isothermal EHL model developed recently by the authors. The results present the trend of minimum film thickness variation as a function of coating thickness and elastic modulus under a wide range of working conditions. Numerical results indicates that the increase in minimum film thickness, Imax and the corresponding optimal dimensionless coating thickness, H2, can be expressed in the following formulas Imax = 0.766M 0.0248R20.0296L0.1379 exp(-0.0245 ln2 L) H2=0.049 M0.4557 R2- 0.1722L0.7611 exp(-0.0504ln2 M - 0.0921 ln 2 L) These formulas can be used to estimate the effect of a coating on EHL film thickness.

Original languageEnglish (US)
Title of host publication2007 Proceedings of the ASME/STLE International Joint Tribology Conference, IJTC 2007
Pages165-166
Number of pages2
VolumePART A
DOIs
StatePublished - May 16 2008
Event2007 ASME/STLE International Joint Tribology Conference, IJTC 2007 - San Diego, CA, United States
Duration: Oct 22 2007Oct 24 2007

Other

Other2007 ASME/STLE International Joint Tribology Conference, IJTC 2007
CountryUnited States
CitySan Diego, CA
Period10/22/0710/24/07

ASJC Scopus subject areas

  • Mechanical Engineering
  • Surfaces, Coatings and Films
  • Condensed Matter Physics
  • Surfaces and Interfaces

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