A Model for Elastohydrodynamic Film Failure in Contacts Between Rough Surfaces Having Transverse Finish

H. P. Evans; R. W. Snidle

doi:10.1115/1.2831618

Journal of Tribology | Volume 118 | Issue 4 | Research Paper

< Previous Article Next Article >

RESEARCH PAPERS

A Model for Elastohydrodynamic Film Failure in Contacts Between Rough Surfaces Having Transverse Finish

H. P. Evans and R. W. Snidle

[+] Author and Article Information

H. P. Evans, R. W. Snidle

School of Engineering, University of Wales, College of Cardiff, Cardiff CF2 1YF

J. Tribol 118(4), 847-857 (Oct 01, 1996) (11 pages) doi:10.1115/1.2831618 History: Received February 26, 1995; Revised July 12, 1995; Online January 24, 2008

Article

Citing Articles

Abstract

The paper describes an elastohydrodynamic lubrication (EHL) model for collapse of the film in a contact of finite width between surfaces which have roughness aligned transverse to that of lubricant entrainment. The failure mechanism proposed is that of sideways leakage of the lubricant in the gaps that are present between the surfaces due to the valley features of the surface roughness. Under typical high temperature conditions with surfaces finished by conventional grinding, it is shown that the gap between the surfaces when lubricated is almost identical to that between the same dry surfaces in contact with the addition of a small land clearance equivalent to the nominal EHL film thickness. Analysis of idealized valley geometries leads to criteria for complete cavitation or significant loss of pressure between asperity contacts, but application of these criteria to a real contact suggests that scuffing occurs under conditions which are less severe than predicted by either of these simple failure models. Detailed analysis of leakage from the valley features in the transverse direction at the edges of a real elliptical contact shows that this can explain the complete loss of the film in a real contact, and this suggests a physical mechanism of scuffing.

Purchase this Content

$25.00

Purchase

Learn about subscription and purchase options

Your Session has timed out. Please sign back in to continue.

References

Figures

Tables

Errata

Web of Science® Times Cited: 27

Some tools below are only available to our subscribers or users with an online account.

Sections
PDF
Email

You must be logged in as an individual user to share content.

Return to: A Model for Elastohydrodynamic Film Failure in Contacts Between Rough Surfaces Having Transverse Finish

Copyright in the material you requested is held by the American Society of Mechanical Engineers (unless otherwise noted). This email ability is provided as a courtesy, and by using it you agree that you are requesting the material solely for personal, non-commercial use, and that it is subject to the American Society of Mechanical Engineers' Terms of Use. The information provided in order to email this topic will not be used to send unsolicited email, nor will it be furnished to third parties. Please refer to the American Society of Mechanical Engineers' Privacy Policy for further information.
Share
Get Citation

Evans HP, Snidle RW. A Model for Elastohydrodynamic Film Failure in Contacts Between Rough Surfaces Having Transverse Finish. ASME. J. Tribol. 1996;118(4):847-857. doi:10.1115/1.2831618.

Download citation file:

RIS (Zotero)

EndNote

BibTex

Medlars

ProCite

RefWorks

Reference Manager

© Copyright
Get Alerts

Processing your request... Please Wait.

A Model for Elastohydrodynamic Film Failure in Contacts Between Rough Surfaces Having Transverse Finish

Abstract

References

Figures

Tables

Errata

Related Content

Journals

Conference Proceedings

eBooks