Publication detail

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

FUIS, V.

Original Title

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

English Title

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

Type

conference paper

Language

en

Original Abstract

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 heads were 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 Weibull 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 manufacturing inaccuracies 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.

English abstract

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 heads were 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 Weibull 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 manufacturing inaccuracies 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.

RIV year

2004

Released

01.04.2004

Publisher

IFToMM, China Machine Press

Location

Tianjin, China

ISBN

7-111-14073-7

Book

The eleventh world congress in mechanism and machine science

Pages from

2197

Pages to

2201

Pages count

5

Documents

BibTex


@inproceedings{BUT11749,
  author="Vladimír {Fuis}",
  title="Stress and Reliability Analyses of Ceramic Femoral Heads with 3D Manufacturing Inaccuracies",
  annote="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 heads were 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 Weibull 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 manufacturing inaccuracies 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.",
  address="IFToMM, China Machine Press",
  booktitle="The eleventh world congress in mechanism and machine science",
  chapter="11749",
  institution="IFToMM, China Machine Press",
  year="2004",
  month="april",
  pages="2197--2201",
  publisher="IFToMM, China Machine Press",
  type="conference paper"
}