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首页> 外文期刊>International Journal of Computer Aided Engineering and Technology >The contact stress calculations in artificial hip-joint by finite element method
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The contact stress calculations in artificial hip-joint by finite element method

机译：人工髋关节的接触应力有限元计算

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摘要

The artificial human hip joint is made up of a metallic femur head and ultra high molecular weight polyethylene (UHMWPE) cup. The stresses in the joint are affected by the shape or the design of implant, the size or the dimensions of the implant, the material of the implant and the clearance in the joint. In this study, a 3D model of the artificial hip joint is analysed by finite element method to investigate contact stresses developed in the cup. Three different materials, namely titanium (Ti) alloy, stainless steel (SS) and cobalt chromium steel (CoCrMo) are used for femur heads. The results for femur head diameters of 22 mm to 36 mm are presented. Ti-Al alloy femur heads show the lowest values for the contact stresses than SS and Co Cr Mo femur heads. The larger the diameter, the lesser are the stress values due to increase in contact area.
机译：人工髋关节由金属股骨头和超高分子量聚乙烯（UHMWPE）杯组成。关节中的应力受植入物的形状或设计，植入物的大小或尺寸，植入物的材料以及关节间隙的影响。在这项研究中，通过有限元方法分析了人工髋关节的3D模型，以研究杯中产生的接触应力。股骨头采用三种不同的材料，即钛（Ti）合金，不锈钢（SS）和钴铬钢（CoCrMo）。给出了股骨头直径为22 mm至36 mm的结果。与SS和Co Cr Mo股骨头相比，Ti-Al合金股骨头显示出最低的接触应力值。直径越大，由于接触面积增加而产生的应力值越小。

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