An efficient and accurate calculation of traction in elastohydrodynamic contacts

Rajiv Dama, Liming Chang

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Traction calculation is an important step in the design and lubrication optimization of machine components with elastohydrodynamic (EHD) contacts. The availability of an accurate and robust method of calculation can be a valuable tool for the machine designer. This paper presents a method of traction calculation that combines the key features of the full numerical approach and previously reported approximation methods. Specifically, the contact pressure and the film thickness are approximated by closed-form expressions while the temperature distribution is numerically calculated using a finite difference method. This scheme of calculation largely eliminates the numerical instability problem that frequently occurs in the full numerical approach while yielding results much more accurate than those obtained by previous approximation methods. The method is robust and allows the use of any rheological models for the lubricant. It is relatively easy to implement on a computer to efficiently calculate traction in both line and point EHD contacts.

Original languageEnglish (US)
Pages (from-to)113-121
Number of pages9
JournalWear
Volume206
Issue number1-2
DOIs
StatePublished - May 1 1997

Fingerprint

elastohydrodynamics
Elastohydrodynamics
traction
Machine components
design optimization
lubricants
lubrication
approximation
Finite difference method
Lubrication
availability
Film thickness
Lubricants
Temperature distribution
temperature distribution
film thickness
Availability
optimization

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

Dama, Rajiv ; Chang, Liming. / An efficient and accurate calculation of traction in elastohydrodynamic contacts. In: Wear. 1997 ; Vol. 206, No. 1-2. pp. 113-121.
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An efficient and accurate calculation of traction in elastohydrodynamic contacts. / Dama, Rajiv; Chang, Liming.

In: Wear, Vol. 206, No. 1-2, 01.05.1997, p. 113-121.

Research output: Contribution to journalArticle

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