|Publisher DOI:||10.1243/095441105X69105||Title:||Deformation of press-fitted metallic resurfacing cups. Part 2: Finite element simulation||Language:||English||Authors:||Yew, A.
Isaac, Graham H.
|Keywords:||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||Issue Date:||1-Feb-2006||Source:||Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine 2 (220): 311-319 (2006)||Journal or Series Name:||Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine||Abstract (english):||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.||URI:||http://tubdok.tub.tuhh.de/handle/11420/1606||DOI:||10.15480/882.1603||ISSN:||2041-3033||Institute:||Biomechanik M-3||Type:||(wissenschaftlicher) Artikel||Permission Note:||Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG geförderten) Allianz- bzw. Nationallizenz frei zugänglich. This publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively.|
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