On heat generation in rolling contacts under boundary and mixed lubrication

L. Chang, Y. Zhao, P. B. Hall, R. Thom, C. Moore

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

This paper reports on experiments and theoretical analyses of heat generation and scuffing failure in rolling contacts. The experiments were conducted with dry contacts, and the theoretical analyses were carried out using a deterministic thermal contact model. The research reveals that heat generated by asperity plastic deformation in the direction normal to the contact can be significant in high-load, high-speed contacts under boundary and mixed lubrication conditions. Under near rolling conditions, heat generated by the plastic deformation largely dominates that by the friction and is the main source leading to contact scuffing. This heat generation is shown to be significant compared to frictional heating even at relatively large slide-to-roll ratios. Parametric studies show that the ratio of asperity-plastic-deformation heating to frictional heating is sensitive to slide-to-roll ratio, hardness and surface finish but insensitive to contact load, rolling velocity and fluid/asperity load sharing.

Original languageEnglish (US)
Pages (from-to)61-66
Number of pages6
JournalJournal of Tribology
Volume123
Issue number1
DOIs
StatePublished - Jan 1 2001

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

Fingerprint Dive into the research topics of 'On heat generation in rolling contacts under boundary and mixed lubrication'. Together they form a unique fingerprint.

Cite this