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Deformation of press-fitted metallic resurfacing cups. Part 2: Finite element simulation
Citation Link: https://doi.org/10.15480/882.1603
Publikationstyp
Journal Article
Date Issued
2006-02-01
Sprache
English
Institut
TORE-DOI
Volume
220
Issue
2
Start Page
311
End Page
319
Citation
Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine 2 (220): 311-319 (2006)
Publisher DOI
Scopus ID
The deformation of metallic acetabular cups employed for metal-on-metal hip resurfacing procedures was considered theoretically using the finite element method in the present study, following on the experimental investigation reported in Part 1. Three representative cups, characterized by the cup wall thickness as thin, intermediate, and thick, were considered. For the intermediate cup, the effects of both the size and the diametral interference on the cup deformation were investigated. Both two-dimensional axisymmetric and three-dimensional finite element models were developed to examine the important parameters during and after the press-fit procedure, and in particular the deformation of the metallic cup. The theoretical prediction of the cup deformation was in reasonable agreement with the corresponding experimental measurement reported in Part 1. The most significant factor influencing the cup deformation was the cup wall thickness. Both the size and the diametral interference were also shown to influence the cup deformation. It is important to ensure that the cup deformation does not significantly affect the clearance designed and optimized for tribological performances of metal-on-metal hip resurfacing prostheses. Furthermore the contact parameters at the cup and bone interface associated with the press fit were also discussed.
Subjects
Acetabulum
Arthroplasty, Replacement, Hip
Biocompatible Materials
Computer Simulation
Elasticity
Equipment Design
Equipment Failure Analysis
Finite Element Analysis
Hardness
Hardness Tests
Humans
Materials Testing
Metals
Pressure
Prosthesis Design
Prosthesis Failure
Surface Properties
Computer-Aided Design
Hip Prosthesis
Models, Biological
DDC Class
610: Medizin
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