A porohyperelastic lubrication model for articular cartilage in the natural synovial joint

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Title: A porohyperelastic lubrication model for articular cartilage in the natural synovial joint
Authors: De Boer, G
Raske, N
Soltanahmadi, S
Dowson, D
Bryant, M
Hewson, R
Item Type: Journal Article
Abstract: This work focuses on the proposed mechanisms for the lubrication of synovial joints and applies them to an idealised bearing geometry considering a porohyperelastic material (cartilage) rotating against a stationary rigid impermeable surface. The model captures the behaviour of all lubrication regimes including fluid film formation and boundary contact as the load capacity is increased, representing a major advancement in modelling cartilage mechanics. Transient responses in the fluid phase are shown to be faster than those in the solid phase with the former decaying over time as fluid is exuded from the material. The complex behaviour of fluid migrating to and from the lubricating film is captured which leads to a better understanding of the hydration and friction mechanisms observed.
Issue Date: 3-May-2019
Date of Acceptance: 28-Apr-2019
URI: http://hdl.handle.net/10044/1/70329
DOI: https://dx.doi.org/10.1016/j.triboint.2019.04.044
ISSN: 0301-679X
Publisher: Elsevier
Journal / Book Title: Tribology International
Copyright Statement: © 2019 Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence http://creativecommons.org/licenses/by-nc-nd/4.0/
Sponsor/Funder: The Leverhulme Trust
Funder's Grant Number: RG.MECH.112386
Keywords: 0913 Mechanical Engineering
Mechanical Engineering & Transports
Publication Status: Published online
Embargo Date: 2020-05-03
Online Publication Date: 2019-05-03
Appears in Collections:Faculty of Engineering
Aeronautics



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