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On the theory of time‐dependent micro‐TEHL for a non‐Newtonian lubricant in line contacts
Author(s) -
Rong-Jia Yang,
Peiranm,
; Shen,
Jiankun
Publication year - 1996
Publication title -
lubrication science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.632
H-Index - 36
eISSN - 1557-6833
pISSN - 0954-0075
DOI - 10.1002/ls.3010080308
Subject(s) - lubricant , lubrication , traverse , mechanics , newtonian fluid , materials science , surface finish , flow (mathematics) , surface roughness , constant (computer programming) , non newtonian fluid , line (geometry) , composite material , geometry , mathematics , physics , computer science , geology , geodesy , programming language
This paper presents a relatively complete numerical solution to time‐dependent micro‐thermoelastohydrodynamic lubrication in line contacts subjected to constant load and entraining velocity. Sinusoidal functions are employed to model the traverse roughness on contact surfaces. The Eyring model is used to describe the non‐Newtonian flow of the lubricant. With respect to time, the problem is treated as a periodic one so that most variables, such as pressure, film thickness and temperature, can be considered as periodic functions. An efficient algorithm is developed, and a number of cases are solved. The results indicate that the lubricant squeeze induced by the motion and interaction of rough surfaces significantly affects the solution of micro‐thermoelastohydrodynamic lubrication.