A numerical study of non-Newtonian transient elastohydrodynamic lubrication of metal-on-metal hip prostheses
Author(s)
Gao, L
Dowson, D
Hewson, RW
Type
Journal Article
Abstract
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.
Date Issued
2016-01-01
Date Acceptance
2015-03-02
Citation
Tribology International, 2016, 93 (Part B), pp.486-494
ISSN
0301-679X
Publisher
Elsevier
Start Page
486
End Page
494
Journal / Book Title
Tribology International
Volume
93
Issue
Part B
Copyright Statement
© 2015, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Identifier
https://www.sciencedirect.com/science/article/pii/S0301679X15000900?via%3Dihub
Subjects
Science & Technology
Technology
Engineering, Mechanical
Engineering
Non-Newtonian
Shear-thinning
EHL
Metal-on-metal hip prosthesis
VOLUMETRIC WEAR
JOINTS
REPLACEMENT
ARTHROPLASTY
RHEOLOGY
FRICTION
IMPLANTS
GEOMETRY
WALKING
MODEL
Mechanical Engineering & Transports
0910 Manufacturing Engineering
0913 Mechanical Engineering
Publication Status
Published
Date Publish Online
2015-03-10