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

Result code in 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>

Alternative codes found

RIV/61388998:_____/04:00103580

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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

Czech description

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.

Type

D - Article in proceedings

CEP classification

JH - Ceramics, fire-proof materials and glass

OECD FORD branch

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Project

<a href="/en/project/GP101%2F01%2FP039" target="_blank" >GP101/01/P039: Stochastic approach to reliability evaluation of the total hip joint endoprothesis ceramic head</a><br>

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2004

Confidentiality

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

Article name in the collection

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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Number of pages

5

Pages from-to

2197-2201

Publisher name

IFToMM, China Machine Press

Place of publication

Tianjin, China

Event location

Tianjin

Event date

Apr 1, 2004

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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