Simplified traction prediction for highly loaded rolling/sliding EHL contacts

H. C. Liu*, B. B. Zhang, N. Bader, C. H. Venner, G. Poll

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

1 Citation (Scopus)
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Abstract

A simplified traction prediction approach has been developed for highly loaded EHL contacts accounting for non-Newtonian and thermal effects. For validation, a reference fluid squalane was used for traction measurements at high Hertzian contact pressures (1.25 to 2.66GPa) at three velocities of 5, 10 and 15m/s. Good agreement was seen for traction curves in a semi-log scale at a low speed of 5m/s, whereas for higher speeds at 10m/s and 15m/s, the measured traction curves are lower than the predicted ones. This reduced friction in the experimental results is caused by the increase in mass temperature of the discs. Two possible mechanisms for this reduced friction due to solid body temperature effects are discussed.

Original languageEnglish
Article number106335
JournalTribology international
Volume148
Early online date31 Mar 2020
DOIs
Publication statusPublished - Aug 2020

Keywords

  • EHL Traction
  • Maximum shear stress
  • Rolling/sliding contacts
  • Solid body temperature

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