Analysis of Run-in-Stage Wear Behavior and Contact Mechanics of Metal-on-Metal Hip Joint Bearings with Different Radial Clearances

被引：14
|
作者：
Chen, Yan [1 ]
Li, Yunping [2 ,3 ]
Kurosu, Shingo [3 ]
Meng, Qingen [4 ]
Tang, Ning [3 ]
Koizumi, Yuichiro [3 ]
Chiba, Akihiko [3 ]
机构：
[1] Tohoku Univ, Dept Mat Sci & Engn, Sendai, Miyagi 9808579, Japan
[2] Cent S Univ, Mat Sci & Engn, Changsha 410083, Hunan, Peoples R China
[3] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan
[4] Univ Leeds, Sch Mech Engn, Inst Med & Biol Engn, Leeds LS2 9JT, W Yorkshire, England
来源：
MATERIALS TRANSACTIONS | 2015年 / 56卷 / 06期
关键词：
joint prostheses; CoCrMo alloy; radial clearance; contact mechanics; ELASTOHYDRODYNAMIC LUBRICATION; RESURFACING ARTHROPLASTY; SIMULATOR; DIAMETER; REPLACEMENTS; PROSTHESES; DEBRIS; IMPLANTS; SURFACES; FRICTION;
D O I：
10.2320/matertrans.M2014440
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We systematically elucidate the effects of radial clearance on the wear behavior of hip joint prostheses bearings during run-in-stage. The results indicated that bearings with smaller radial clearances exhibited lower wear rate and less abrasive wear characterized by mild surface roughness and sphericity. The contact mechanics and lubrication regime of MOM bearings with different radial clearances were also analyzed, indicating that bearings with radial clearance of similar to 20 mu m was more beneficial for small contact pressures even the enlarged clearance made the bearings operate under a full-fluid-to-mixed lubrication during wear. The agreement between the experimental results of wear rate (mm(3)/Mc) and contact mechanics and lubrication analysis indicated that the radial clearance significantly affected the wear behavior of the MOM bearings.
引用
收藏
页码：826 / 834
页数：9
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