Liu, F and Fisher, J orcid.org/0000-0003-3833-3700 (2017) Effect of an edge at cup rim on contact stress during micro-separation in ceramic-on-ceramic hip joints. Tribology International, 113. pp. 323-329. ISSN 0301-679X
Abstract
Alumina ceramic total hip joint bearings have shown superior wear properties. The joint bearing may undergo adverse conditions such as micro-separation causing head contact on the cup rim. As a transition, an edge is formed between the cup bearing and the rim. The aim of this study was to predict the effect of the edge on contact stresses in order to better understand the mechanisms of wear. A finite element contact model was developed under the conditions of the head displacements 0.5 2 mm and vertical loads 0.5 3kN. The edge contact produced the most severe stresses capable of causing elevated wear and damage to ceramic bearings. The study shows that the bearing design should be considered in association with clinical conditions to eliminate severe stress.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2017 The Authors. Published by Elsevier Ltd. This is an open access article under the terms of the Creative Commons Attribution License (CC-BY). |
Keywords: | ceramic-on-ceramic; hip joint replacement; edge contact; micro-separation; finite element |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Mechanical Engineering (Leeds) > Institute of Medical and Biological Engineering (iMBE) (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 12 Jan 2017 14:19 |
Last Modified: | 01 Jul 2017 14:35 |
Published Version: | https://doi.org/10.1016/j.triboint.2017.01.012 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.triboint.2017.01.012 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:110504 |