Elastohydrodynamic lubrication and wear modelling of the knee joint replacements with surface topography
作者机构：Department of Aeronauticslmperial College LondonLondonUK School of Mechatronics Engineering and AutomationShanghai UniversityShanghaiPeople's Republic of China Department of Materials and ProductionAalborg University9100 AalborgDenmark Southwest Jiaotong UniversityChengduPeople's Republic of China Tribology Research IlnstituteSchool of Mechanical EngineeringUniversity of LeedsLeedsUK
出 版 物：《Biosurface and Biotribology》 (生物表面与生物摩擦学（英文）)
年 卷 期：2018年第4卷第1期
页 面：18-23页
核心收录：
学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）]
基 金：the Imperial Junior Research Fellowship(2015-2018) Shanghai Natural Science Foundationof China(16ZR1411800).M.S.Andersen was supported by theSapere Aude program of the Danish Council for IndependentResearch(DFF-4184-00018)
主 题：wear surface lubrication
摘 要：This numerical study predicted wear of lubricated total knee replacements with the existing of textured surfaceand the possibility of surface designs to reduce *** the first part,a wear model of metal-on-polyethylene total kneereplacement was *** medial and lateral knee compartments was accounted for separately,with the contactforce and motion during walking cycles *** adapted Archard wear formula was employed where the wearfactor was an exponential function of the Lambda ratio (film thickness to the average roughness).Wear of the softbearing surface(polyethylene insert)was simulated with regularly geometry update until a steady-state wear *** the second part,the effect of surface topography of the knee replacements was *** surface texturingtechniques have shown promising benefit to machine components in many areas of engineering *** textureparameters were designed using the Taguchi method for the geometry,size,and distribution of the micro *** observed that the lateral compartment may benefit from surface texturing if dimples were properly designed,while the texturing showed hardly advantageous effect on the medial surface in terms of lubrication enhancement andwear *** results were presented in the 6th World Tribology Conference.
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