A method of calculation for contact pressure between a femoral head and cup of artificial hip joint

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  • 907 人工股関節での骨頭とカップの接触圧力に関する-計算法

Abstract

A method of calculation for contact pressure in conformal contacts such as hip joint was studied. In elastic contact analysis, the Hertzian theory is well known. But the Hertzian theory is hardly applicable to a problem of an extreme conformal contact condition as in hip joints. Providing a relation between contact pressure and interference depth of the original configurations, contact pressure was calculated and compared with the FEM analysis. This method is analogous to the calculation of load distribution in radial ball bearings. The accuracy of the method was numerically evaluated by simple problems. It was confirmed that the accuracy of this method was enough for practical use.

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