Study of surface roughness effects in elastohydrodynamic lubrication of rolling line contacts using a deterministic model

被引：40

作者：

Kumar, P

Jain, SC

Ray, S ^{[1
]}

机构：

[1] Univ Roorkee, Dept Met & Mat Engn, Roorkee 247667, Uttar Pradesh, India

[2] Univ Roorkee, Dept Mech & Ind Engn, Roorkee 247667, Uttar Pradesh, India

来源：

TRIBOLOGY INTERNATIONAL | 2001年 / 34卷 / 10期

关键词：

surface roughness; elastohydrodynamic lubrication; minimum film thickness; coefficient of friction; roughness amplitude; roughness wavelength;

D O I：

10.1016/S0301-679X(01)00066-4

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

A sinusoidal surface roughness model is adopted for the analysis of the effects of roughness amplitude and wavelength on pressure profile, film shape, minimum film thickness and coefficient of friction in a steady state EHL line contact. The influence coefficients used for the evaluation of surface displacements are calculated by utilizing a numerical method based on Fast Fourier Transform. Significant reduction is observed in the minimum film thickness due to surface rough-ness. Such reduction is quantified by roughness correction factor, CR, and a relationship between C, and non-dimensional surface roughness amplitude A is derived as: C-R=1-0.7823A(0.8213). This equation may prove to be of interest from designer's viewpoint. The friction coefficient is found to increase appreciably with increasing amplitude and decreasing wavelength of surface roughness. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：713 / 722

页数：10

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