Cross-shear implementation in sliding-distance-coupled finite element analysis of wear in metal-on-polyethylene total joint arthroplasty: intervertebral total disc replacement as an illustrative application.
Cross-shear implementation in sliding-distance-coupled finite element analysis of wear in metal-on-polyethylene total joint arthroplasty: intervertebral total disc replacement as an illustrative application.
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DOI：
10.1016/j.jbiomech.2010.03.003
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发表时间：
2010-06-18
影响因子：
2.4
通讯作者：
Brown, Thomas D.
中科院分区：
文献类型：
--
作者：
Goreham-Voss, Curtis M.;Hyde, Philip J.;Hall, Richard M.;Fisher, John;Brown, Thomas D.
骨科全关节置换植入物磨损的计算模拟已被证明是对实验室物理模拟器的有价值的补充，用于临床前对磨损/粘着磨损倾向的评估。这类数值公式主要涉及实现Archard/Lancaster关系，局部磨损计算为(有限元)接触应力、滑动速度和与轴承副相关的磨损系数的乘积。本研究引入了一种增强方法，在计算瞬时局部磨损系数时，考虑了界面横向剪切运动对聚乙烯关节表面主要分子取向的影响。公式扩充是在一个广泛使用的商业有限元软件环境(ABAQUS)中实现的。使用当代的金属-聚乙烯全盘置换术(ProDisc-L)作为说明性植入物，给出了物理验证的计算结果，以证明交叉剪切效应在替代实验室共识测试方案中的作用。展望未来，这一公式允许系统地考虑金属-聚乙烯接头替换的参数计算磨损研究中的交叉剪切效应，到目前为止，这是此类分析的一个实质性限制。
Computational simulations of wear of orthopaedic total joint replacement implants have proven to valuably complement laboratory physical simulators, for pre-clinical estimation of abrasive/adhesive wear propensity. This class of numerical formulations has primarily involved implementation of the Archard/Lancaster relationship, with local wear computed as the product of (finite element) contact stress, sliding speed, and a bearing-couple-dependent wear factor. The present study introduces an augmentation, whereby the influence of interface cross-shearing motion transverse to the prevailing molecular orientation of the polyethylene articular surface is taken into account in assigning the instantaneous local wear factor. The formulation augment is implemented within a widely-utilized commercial finite element software environment (ABAQUS). Using a contemporary metal-on-polyethylene total disc replacement (ProDisc-L) as an illustrative implant, physically validated computational results are presented to document the role of cross-shearing effects in alternative laboratory consensus testing protocols. Going forward, this formulation permits systematically accounting for cross-shear effects in parametric computational wear studies of metal-on-polyethylene joint replacements, heretofore a substantial limitation of such analyses.
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影响因子：
2.4
作者：
Maxian, TA;Brown, TD;Callaghan, JJ
通讯作者：
Callaghan, JJ
影响因子：
2.4
作者：
Fregly, BJ;Sawyer, WG;Banks, SA
通讯作者：
Banks, SA
影响因子：
2.4
作者：
Kurtz, SM;Ochoa, JA;White, CV
通讯作者：
White, CV
影响因子：
2.8
作者：
Lundberg, Hannah J.;Stewart, Kristofer J.;Brown, Thomas D.
通讯作者：
Brown, Thomas D.
DOI：
10.1097/01.blo.0000150450.42829.b8
发表时间：
2005-01-01
影响因子：
4.2
作者：
Lundberg, HJ;Stewart, KJ;Brown, TA
通讯作者：
Brown, TA