动态行走条件下髋关节植入物滑动距离和接触力学的有限元分析
Finite element analysis of sliding distance and contact mechanics of hip implant under dynamic walking conditions.
作者信息
Gao Yongchang, Jin Zhongmin, Wang Ling, Wang Manyi
机构信息
State Key Laboratory for Manufacturing System Engineering, School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, China.
State Key Laboratory for Manufacturing System Engineering, School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, China Institute of Medical and Biological Engineering, School of Mechanical Engineering, University of Leeds, Leeds, UK.
出版信息
Proc Inst Mech Eng H. 2015 Jun;229(6):469-74. doi: 10.1177/0954411915585380. Epub 2015 May 11.
An explicit finite element method was developed to predict the dynamic behavior of the contact mechanics for a hip implant under normal walking conditions. Two key parameters of mesh sensitivity and time steps were examined to balance the accuracy and computational cost. Both the maximum contact pressure and accumulated sliding distance showed good agreement with those in the previous studies using the implicit finite element analysis and analytical methods. Therefore, the explicit finite element method could be used to predict the contact pressure and accumulated sliding distance for an artificial hip joint simultaneously in dynamic manner.
开发了一种显式有限元方法来预测正常行走条件下髋关节植入物接触力学的动态行为。研究了网格敏感性和时间步长这两个关键参数，以平衡精度和计算成本。最大接触压力和累积滑动距离与先前使用隐式有限元分析和解析方法的研究结果均显示出良好的一致性。因此，显式有限元方法可用于动态同时预测人工髋关节的接触压力和累积滑动距离。
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