A mixed-TEHD model for journal-bearing conformal contacts-part I: Model formulation and approximation of heat transfer considering asperity contact

Fanghui Shi, Qian Wang

Research output: Contribution to journalArticle

75 Scopus citations

Abstract

A mixed-TEHD (thermal elastohydrodynamic) model was developed for journal bearings working at large eccentricity ratios in order to facilitate a better understanding of mixed-lubrication phenomena for conformal-contact elements. The model consists of a mixed-lubrication process that considers the roughness effect and asperity contact, a thermal process for temperature analyses, and a thermal-elastic process for deformation calculations. In this model, the interactive journal, lubricant, and bearing were treated as an integrated system. Finite-element, finite-difference, and influencefunction methods were utilized in the numerical process. The overall solution was achieved by the iteration method. Analyses of a simulated bearing-lubricant-journal system working under mixed-lubrication conditions were conducted, and the influence of the changes of lubricant flows as a result of the asperity contact on the system heat transfer and temperature distributions was numerically investigated.

Original languageEnglish (US)
Pages (from-to)198-205
Number of pages8
JournalJournal of Tribology
Volume120
Issue number2
DOIs
StatePublished - Apr 1998

ASJC Scopus subject areas

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

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