. "The paper deals with the problems of ceramic head of hip joint endoprosthesis destructions, and with assessing the impact of shape deflections of conical surfaces on the probability of this failure. Concerned are shape deflections from the ideal conicalsurfaces of the stem and the head of the endoprosthesis, which - when the head is put on the stem and the endoprosthesis loaded - form a contact configuration. The shape deflections may be modelled at the macro-level - this concerns model shape inaccuraccies such as deflection from the nominal degree of taper, ovality, and their combination, or, possibly, at the micro-level - when the stochastic distribution of unevenness on the contact areas is respected. The problem of stress in ceramic heads was solved using the algorithm of the finite element method for spatial contact tasks, and the Weibull probability model was used for solving the problem of head cohesion failure probability. In the paper are presented and analysed the results of solution of the"@en . . "1210-2717" . "Napjatostn\u00ED anal\u00FDza ky\u010Deln\u00ED endoprot\u00E9zy s tvarov\u00FDmi odchylkami"@cs . . . "P(GA101/05/0136)" . . "Stress analysis of the hip joint endoprosthesis with shape deflections" . . "323-329" . "Stress analysis of the hip joint endoprosthesis with shape deflections"@en . "Napjatostn\u00ED anal\u00FDza ky\u010Deln\u00ED endoprot\u00E9zy s tvarov\u00FDmi odchylkami"@cs . "Fuis, Vladim\u00EDr" . "CZ - \u010Cesk\u00E1 republika" . . . . "Stress analysis of the hip joint endoprosthesis with shape deflections"@en . . . "26210" . "Stress analysis of the hip joint endoprosthesis with shape deflections" . "[9996D343DAD2]" . . . "2"^^ . "12" . "P\u0159\u00EDsp\u011Bvek se zab\u00FDv\u00E1 napjatostn\u00ED anal\u00FDzovou keramick\u00E9 hlavice ky\u010Deln\u00ED endoprot\u00E9zy s uva\u017Eovan\u00FDm\u00ED tvarov\u00FDmi odchylkami na kontaktn\u00EDm ku\u017Eelov\u00E9m spojen\u00ED hlavice-d\u0159\u00EDk."@cs . "Computational modelling, hip joint endoprosthesis, micro-unevenness modelling, stress and failure probability analyses, Weibull weakest link theory"@en . . . "N\u00E1vrat, Tom\u00E1\u0161" . . . "544859" . "In\u017Een\u00FDrsk\u00E1 mechanika - Engineering Mechanics" . "RIV/00216305:26210/05:PU54853" . "2"^^ . "RIV/00216305:26210/05:PU54853!RIV06-GA0-26210___" . "The paper deals with the problems of ceramic head of hip joint endoprosthesis destructions, and with assessing the impact of shape deflections of conical surfaces on the probability of this failure. Concerned are shape deflections from the ideal conicalsurfaces of the stem and the head of the endoprosthesis, which - when the head is put on the stem and the endoprosthesis loaded - form a contact configuration. The shape deflections may be modelled at the macro-level - this concerns model shape inaccuraccies such as deflection from the nominal degree of taper, ovality, and their combination, or, possibly, at the micro-level - when the stochastic distribution of unevenness on the contact areas is respected. The problem of stress in ceramic heads was solved using the algorithm of the finite element method for spatial contact tasks, and the Weibull probability model was used for solving the problem of head cohesion failure probability. In the paper are presented and analysed the results of solution of the" . "7"^^ . "5" . .