A numerical study of non-Newtonian transient elastohydrodynamic lubrication of metal-on-metal hip prostheses

被引：30

作者：

Gao, Leiming ^{[1
]}

Dowson, Duncan ^{[2
]}

Hewson, Robert W. ^{[1
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Dept Aeronaut, London SW7 2AZ, England

[2] Univ Leeds, Sch Mech Engn, Leeds LS2 9JT, W Yorkshire, England

来源：

TRIBOLOGY INTERNATIONAL | 2016年 / 93卷

关键词：

Non-Newtonian; Shear-thinning; EHL; Metal-on-metal hip prosthesis; VOLUMETRIC WEAR; JOINTS; REPLACEMENT; ARTHROPLASTY; RHEOLOGY; FRICTION; IMPLANTS; GEOMETRY; WALKING; MODEL;

D O I：

10.1016/j.triboint.2015.03.003

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

This paper presents a comprehensive numerical study of transient non-Newtonian elastohydrodynamic lubrication of metal-on-metal hip prosthesis subjected to two different gait cycles. The shear-thinning property of the synovial fluid was found to have a significant effect on the lubricating film, in terms of both the magnitude and location of the minimum film thickness, and more generally the film thickness distribution. A range of clearances between the acetabular cup and femoral head was investigated and the shear-thinning effect was more pronounced in the hip replacements with smaller clearances. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：486 / 494

页数：9

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