Stress and Reliability Analyses of Ceramic Femoral Heads with 3D Manufacturing Inaccuracies

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F04%3APU44500" target="_blank" >RIV/00216305:26210/04:PU44500 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61388998:_____/04:00103580

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Stress and Reliability Analyses of Ceramic Femoral Heads with 3D Manufacturing Inaccuracies

Popis výsledku v původním jazyce

At present, the problems of reliability of ceramic femoral heads for hip joint endoprosthesis are topical, as in a not negligible number of patients their destruction in vivo had taken place. Therefore stress and reliability analyses of the ceramic headswere made using computational modelling aimed at finding the causes of the head destruction. The deformation and stresses are obtained by computational methods under testing conditions, in accordance with ISO 7206-5. Head reliability is based on the Weiibull weakest link theory. The head's stress and reliability are significantly influenced by manufacturing inaccuracies of the cone contact areas. The considered manufacturing inaccuracies are modelled as axisymmetric or 3D. The effects of manufacturinginaccuracies on the head's hoop stresses along the contact taper are analysed in detail. Finally, the effect of the mentioned manufacturing inaccuracies on the head's failure probability during the loading is shown.

Název v anglickém jazyce

Stress and Reliability Analyses of Ceramic Femoral Heads with 3D Manufacturing Inaccuracies

Popis výsledku anglicky

At present, the problems of reliability of ceramic femoral heads for hip joint endoprosthesis are topical, as in a not negligible number of patients their destruction in vivo had taken place. Therefore stress and reliability analyses of the ceramic headswere made using computational modelling aimed at finding the causes of the head destruction. The deformation and stresses are obtained by computational methods under testing conditions, in accordance with ISO 7206-5. Head reliability is based on the Weiibull weakest link theory. The head's stress and reliability are significantly influenced by manufacturing inaccuracies of the cone contact areas. The considered manufacturing inaccuracies are modelled as axisymmetric or 3D. The effects of manufacturinginaccuracies on the head's hoop stresses along the contact taper are analysed in detail. Finally, the effect of the mentioned manufacturing inaccuracies on the head's failure probability during the loading is shown.

Druh

D - Stať ve sborníku

CEP obor

JH - Keramika, žáruvzdorné materiály a skla

OECD FORD obor

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Projekt

<a href="/cs/project/GP101%2F01%2FP039" target="_blank" >GP101/01/P039: Stochastický přístup k posouzení spolehlivosti keramických hlavic totální kyčelní endoprotézy</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2004

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

The eleventh world congress in mechanism and machine science

ISBN

7-111-14073-7

ISSN

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e-ISSN

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Počet stran výsledku

5

Strana od-do

2197-2201

Název nakladatele

IFToMM, China Machine Press

Místo vydání

Tianjin, China

Místo konání akce

Tianjin

Datum konání akce

1. 4. 2004

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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