Lubrication modelling of artificial HIP joints: From fluid film to boundary lubrication regimes

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9 Scopus citations

Abstract

A full numerical methodology was developed for the mixed lubrication analysis of hip implants, covering a continuous spectrum from full fluid film to boundary (dry contact) lubrication regimes. The methodology was applied to a typical hip implant employing an ultra high molecular weight polyethylene (UHMWPE) acetabular cup in articulation with a metallic femoral head. It was shown that as the viscosity decreased, direct contact was initiated at the exit regions both in the entraining and side-leakage directions where the minimum film thickness occurred. As the viscosity decreased further, the direct contact area increased and until eventually became similar to the dry contact area.

Original languageEnglish
Title of host publicationProceedings of the 7th Biennial Conference on Engineering Systems Design and Analysis, ESDA 2004
PublisherAmerican Society of Mechanical Engineers
Pages605-611
Number of pages7
ISBN (Print)0791841731, 9780791841730
DOIs
StatePublished - 2004
Externally publishedYes
EventProceedings of the 7th Biennial Conference on Engineering Systems Design and Analysis - 2004 - Manchester, United Kingdom
Duration: 19 Jul 200422 Jul 2004

Publication series

NameProceedings of the 7th Biennial Conference on Engineering Systems Design and Analysis, ESDA 2004
Volume1

Conference

ConferenceProceedings of the 7th Biennial Conference on Engineering Systems Design and Analysis - 2004
Country/TerritoryUnited Kingdom
CityManchester
Period19/07/0422/07/04

Keywords

  • Artificial hip joint
  • Mixed lubrication
  • Spherical FFT

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