The normal displacement of articular cartilage was measured under load and in sliding, and the coefficient of friction during sliding was measured using a UMT-2 Multi-Specimen Test System. The maximum normal displacem...The normal displacement of articular cartilage was measured under load and in sliding, and the coefficient of friction during sliding was measured using a UMT-2 Multi-Specimen Test System. The maximum normal displacement under load and the start-up frictional coefficient have similar tendency of variation with loading time. The sliding speed does not significantly influence the frictional coefficient of articular cartilage.展开更多
采用UMT-2型微观多功能测试系统,在试验环境为牛血清,法向加载应力0.8 MPa,加载时间从5 s到60 m in变化条件下分别测定了牛膝关节软骨在静态加载和滑行时的法向位移以及滑行时的摩擦系数.结果表明:上、下软骨间的法向位移与加载时间呈...采用UMT-2型微观多功能测试系统,在试验环境为牛血清,法向加载应力0.8 MPa,加载时间从5 s到60 m in变化条件下分别测定了牛膝关节软骨在静态加载和滑行时的法向位移以及滑行时的摩擦系数.结果表明:上、下软骨间的法向位移与加载时间呈非线性增加;滑行时法向位移影响软骨间摩擦系数,启动摩擦系数高于平坦滑行过程中的摩擦系数;滑行速率对软骨摩擦系数的影响较小,加载时间越长,法向位移越大,所对应的启动摩擦系数越大;加载时法向位移和滑行时启动摩擦系数具有类似的变化趋势.展开更多
文摘The normal displacement of articular cartilage was measured under load and in sliding, and the coefficient of friction during sliding was measured using a UMT-2 Multi-Specimen Test System. The maximum normal displacement under load and the start-up frictional coefficient have similar tendency of variation with loading time. The sliding speed does not significantly influence the frictional coefficient of articular cartilage.
文摘采用UMT-2型微观多功能测试系统,在试验环境为牛血清,法向加载应力0.8 MPa,加载时间从5 s到60 m in变化条件下分别测定了牛膝关节软骨在静态加载和滑行时的法向位移以及滑行时的摩擦系数.结果表明:上、下软骨间的法向位移与加载时间呈非线性增加;滑行时法向位移影响软骨间摩擦系数,启动摩擦系数高于平坦滑行过程中的摩擦系数;滑行速率对软骨摩擦系数的影响较小,加载时间越长,法向位移越大,所对应的启动摩擦系数越大;加载时法向位移和滑行时启动摩擦系数具有类似的变化趋势.
