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首页> 外文期刊>Journal of Biomechanics >An energy dissipation and cross shear time dependent computational wear model for the analysis of polyethylene wear in total knee replacements
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An energy dissipation and cross shear time dependent computational wear model for the analysis of polyethylene wear in total knee replacements

机译：与耗能和横剪时间相关的计算磨损模型，用于分析全膝关节置换中的聚乙烯磨损

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摘要

The cost and time efficiency of computational polyethylene wear simulations may enable the optimization of total knee replacements for the reduction of polyethylene wear. The present study proposes an energy dissipation wear model for polyethylene which considers the time dependent molecular behavior of polyethylene, aspects of tractive rolling and contact pressure. This time dependent - energy dissipation wear model was evaluated, along with several other wear models, by comparison to pin-on-disk results, knee simulator wear test results under various kinematic conditions and knee simulator wear test results that were performed following the ISO 14243-3 standard. The proposed time dependent - energy dissipation wear model resulted in improved accuracy for the prediction of pin-on-disk and knee simulator wear test results compared with several previously published wear models.
机译：计算聚乙烯磨损模拟的成本和时间效率可以使总膝关节置换的优化达到减少聚乙烯磨损的目的。本研究提出了一种聚乙烯的能量耗散磨损模型，该模型考虑了聚乙烯的时间依赖性分子行为，牵引轧制和接触压力方面。通过与针盘结果，各种运动条件下的膝盖模拟器磨损测试结果以及遵循ISO 14243进行的膝盖模拟器磨损测试结果进行比较，评估了这种与时间相关的能量耗散磨损模型以及其他几种磨损模型-3标准。与几个先前发布的磨损模型相比，所提出的时间相关的能量耗散磨损模型提高了对销盘和膝盖模拟器磨损测试结果的预测准确性。

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