An elastohydrodynamic lubrication model for coated surfaces in point contacts

Yuchuan Liu*, W. Wayne Chen, Dong Zhu, Shuangbiao Liu, Q Jane Wang

*Corresponding author for this work

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

Abstract

An EHL model for coated surfaces in point contacts was developed by combining the elastic deformation formulation for coated surfaces with an EHL model. The calculation of elastic deformation for coated surfaces was performed using the efficient algorithm of discrete convolution and fast Fourier transform. The coating EHL model was verified by the comparison to available numerical results. The effects of coating on lubrication under various loads, speeds, rheological models and pressure-viscosity behaviors were numerically studied. Similar to the observations from dry contact, stiffer coatings in EHL tended to reduce the nominal contact radius but increased the maximum contact pressure, and vice versa for more compliant coatings. However, the influence of coatings on film thickness, including the central and the minimum film thicknesses, did not follow a monotonic variation as coating thickness increased. It was due to the effect of pressure viscosity, which tended to counterbalance the effect of coating. This is an abstract of a paper presented at the Society of Tribologists and Lubrication Engineers - 62nd Annual Meeting of the Society of Tribologists and Lubrication Engineers 2007 (Philadelphia, PA 5/6-10/2007).

Original languageEnglish (US)
Title of host publicationSociety of Tribologists and Lubrication Engineers - 62nd Annual Meeting of the Society of Tribologists and Lubrication Engineers 2007
Pages1021-1022
Number of pages2
Volume2
StatePublished - Dec 1 2007
EventSociety of Tribologists and Lubrication Engineers - 62nd Annual Meeting of the Society of Tribologists and Lubrication Engineers 2007 - Philadelphia, PA, United States
Duration: May 6 2007May 10 2007

Other

OtherSociety of Tribologists and Lubrication Engineers - 62nd Annual Meeting of the Society of Tribologists and Lubrication Engineers 2007
CountryUnited States
CityPhiladelphia, PA
Period5/6/075/10/07

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Chemistry

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