Transient elastohydrodynamic lubrication models for the human ankle joint.
Transient elastohydrodynamic lubrication models for the human ankle joint.
复制标题
人体踝关节瞬态弹流动力润滑模型。
DOI：
10.1243/emed_jour_1984_013_035_02
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发表时间：
1984
期刊：
影响因子：
--
通讯作者：
V. Wright
中科院分区：
文献类型：
--
作者：
J. Medley;D. Dowson;V. Wright
提出了一种等效轴承来表示人体正常的踝关节。几何学是基于对被解剖的脚踝关节的测量，组织特性是从以前的研究人员的工作中获得的。建立了理论模型来估计重复活动(如行走)过程中润滑膜厚度和摩擦系数的周期性变化。得到了各种输入参数组合的解。对于代表步行周期的条件，计算出膜厚约为0.7μm。虽然这个数值比以前测量的软骨的均方根粗糙度要小，但并不小很多，这表明瞬时弹流润滑在滑膜关节的润滑中起到了作用。仅当采用非常高的输入粘度时，才支持全液膜润滑的可能性，这是基于先前对增压润滑机理的实验研究的估计值。还有，一个尝试..。
An equivalent bearing was proposed to represent the normal human ankle joint. The geometry was based on measurements of dissected ankle joints and tissue properties were obtained from the work of previous investigators. Theoretical models were developed to estimate the cyclic variation in lubricant film thickness and coefficient of friction during repetitive activities such as walking. Solutions were obtained for various combinations of input parameters. For the conditions representing the walking cycle, film thicknesses of about 0.7 μm were calculated. Although this value was smaller than most previous measurements of the rms roughness of cartilage, it was not much smaller and suggested that transient elastohydrodynamic lubrication played a role in synovial joint lubrication. The possibility of full fluid film lubrication was supported only when a very high input viscosity was employed, based on values estimated from the previous experimental studies of the boosted lubrication mechanism. Also, an attempt...