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首页> 外文会议>7th Biennial Conference on Engineering Systems Design and Analysis 2004(ESDA 2004) vol.1: Advanced Energy Systems; Advanced Heat Transfer in Engineering Systems; ... >LUBRICATION MODELLING OF ARTIFICIAL HIP JOINTS: FROM FLUID FILM TO BOUNDARY LUBRICATION REGIMES
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LUBRICATION MODELLING OF ARTIFICIAL HIP JOINTS: FROM FLUID FILM TO BOUNDARY LUBRICATION REGIMES

机译：人工髋关节的润滑建模：从流体膜到边界润滑系统

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摘要

A full numerical methodology was developed for the mixed lubrication analysis of hip implants, covering a continuous spectrum from full fluid film to boundary (dry contact) lubrication regimes. The methodology was applied to a typical hip implant employing an ultra high molecular weight polyethylene (UHMWPE) acetabular cup in articulation with a metallic femoral head. It was shown that as the viscosity decreased, direct contact was initiated at the exit regions both in the entraining and side-leakage directions where the minimum film thickness occurred. As the viscosity decreased further, the direct contact area increased and until eventually became similar to the dry contact area.
机译：开发了用于髋关节植入物混合润滑分析的完整数值方法，涵盖了从全液膜到边界（干接触）润滑方案的连续光谱。将该方法应用于典型的髋关节植入物，该植入物采用超高分子量聚乙烯（UHMWPE）髋臼杯与金属股骨头进行关节运动。结果表明，随着粘度的降低，在夹带方向和侧向渗漏方向上都在发生最小膜厚的出口区域开始直接接触。随着粘度进一步降低，直接接触面积增加，直到最终变得类似于干接触面积。

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