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An analytical friction model for point contacts subject to boundary and mixed elastohydrodynamic lubrication

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journal contribution
posted on 2024-05-21, 10:31 authored by Matthew Simpson, Ramin RahmaniRamin Rahmani, Nader DolatabadiNader Dolatabadi, Nick MorrisNick Morris, David Jones, Christopher Craig

An analytical EHL model suitable for highly loaded point contacts operating in mixed and boundary regimes of lubrication is presented. The results are compared and validated with the experimental measurements of friction coefficient from an MTM tribometer. Measurements are carried out upon a PAO40 oil at medium to high temperatures. In general, a good agreement in trend and magnitude over a wide range of operating conditions is observed. Both the experimental findings and the model predictions show an inverse relationship between friction and contact load in mixed and boundary regimes of lubrication, an effect not hitherto reported in literature.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

Tribology International

Volume

196

Publisher

Elsevier BV

Version

  • VoR (Version of Record)

Rights holder

© The Authors

Publisher statement

Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

Acceptance date

2024-04-23

Publication date

2024-08-01

Copyright date

2024

ISSN

0301-679X

Language

  • en

Depositor

Dr Ramin Rahmani. Deposit date: 15 May 2024

Article number

109699

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