Enhanced computational prediction of polyethylene wear in hip joints by incorporating cross-shear and contact pressure in additional to load and sliding distance: Effect of head diameter
Enhanced computational prediction of polyethylene wear in hip joints by incorporating cross-shear and contact pressure in additional to load and sliding distance: Effect of head diameter
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DOI：
10.1016/j.jbiomech.2009.01.005
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发表时间：
2009-05-11
影响因子：
2.4
通讯作者：
Jin, Zhongmin
中科院分区：
文献类型：
--
作者：
Kang, Lu;Galvin, Alison L.;Jin, Zhongmin
一个新的定义的实验磨损因子的建立和报告作为一个功能的交叉剪切运动和接触压力，使用多方向销-板磨损试验机在本研究中的传统聚乙烯。通过将交叉剪切运动和接触压力相关磨损因子纳入Archard定律，以及载荷和滑动距离，开发了一个独立的计算磨损模型。直接将磨损体积的计算预测与直径为28 mm的聚乙烯髋关节的模拟器测试进行比较。随后考虑了增加股骨头尺寸的影响，结果表明，由于滑动距离增加和接触压力降低，磨损增加。(C)2009爱思唯尔有限公司版权所有。
A new definition of the experimental wear factor was established and reported as a function of cross-shear motion and contact pressure using a multi-directional pin-on-plate wear testing machine for conventional polyethylene in the present study. An independent computational wear model was developed by incorporating the cross-shear motion and contact pressure-dependent wear factor into the Archard's law, in additional to load and sliding distance. The computational prediction of wear volume was directly compared with a simulator testing of a polyethylene hip joint with a 28 mm diameter. The effect of increasing the femoral head size was subsequently considered and was shown to increase wear, as a result of increased sliding distance and reduced contact pressure. (C) 2009 Elsevier Ltd. All rights reserved.