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Effects of surface coating on elastohydrodynamic lubrication of line contacts
Author(s) -
Elsharkawy Abdallah A.
Publication year - 2006
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.18
Subject(s) - lubrication , lubricant , materials science , elasticity (physics) , coating , mechanics , newtonian fluid , nonlinear system , finite element method , numerical analysis , fourier transform , half space , composite material , mathematical analysis , mathematics , physics , thermodynamics , quantum mechanics
Abstract A numerical solution to the elastohydrodynamic lubrication (EHL) problem of two coated elastic bodies in line contact is introduced. The non‐Newtonian behavior of the lubricant is incorporated into EHL analysis using Eyring's nonlinear viscous model. The surface elastic deformations are computed from full elasticity analysis of layered elastic half‐space. The iterative Newton–Raphson technique is used in the numerical solution. Subsurface stresses are calculated using two different techniques, the numerical integral scheme based on Fourier transformation and the finite element method. The effects of surface coating (material and thickness) on the pressure profile and subsurface stresses are presented and discussed. Copyright © 2006 John Wiley & Sons, Ltd.