Original title: Přesnost výroby versus spolehlivost keramických hlavic kyčelní endoprotézy
Translated title: Manufacturing accuracy versus reliability of the hip joint endoprosthesis ceramic head
Authors: Fuis, Vladimír
Document type: Papers
Conference/Event: Engineering Mechanics 2005, Svratka (CZ), 2005-05-09 / 2005-05-12
Year: 2005
Language: cze
Abstract: [cze] [eng]
Příspěvek se zabývá problematikou napjatosti a pravděpodobnosti porušení keramické hlavice kyčelní endoprotézy. K výpočtovému modelování byl použit systém MKP ANSYS, k výpočtu spolehlivosti byla použita Weibullova teorie nejslabšího článku. Zatížení soustavy je v souladu s normou ISO 7206-5. V modely jsou uvažovány mikro a makro tvarové odchylky, které byly získány z měřícího zařízení IMS UMPIRE. The paper deals with the problems of the stress and failure probability of the ceramic head of hip joint endoprosthesis. Computational modeling is used to solve the problem - stress states are calculated by FEM, failure probability is based on the Weibull weakest link theory. The ceramic head is pressed on the stem cone under ISO 7206-5 conditions. There are considered the macro and micro shape deflections of the contacted cone areas, the values are given from the 3D measured device IMS UMPIRE.
Keywords: computational modelling; hip joint endoprosthesis; shape deflections
Project no.: CEZ:AV0Z20760514 (CEP), GP101/04/P037 (CEP)
Funding provider: GA ČR
Host item entry: Engineering Mechanics 2005 : national conference with interantional participation, ISBN 80-85918-93-5

Institution: Institute of Thermomechanics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0111770

Permalink: http://www.nusl.cz/ntk/nusl-32051


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Research > Institutes ASCR > Institute of Thermomechanics
Conference materials > Papers