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磨粒磨损的模型化分析
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国家高技术研究发展计划(863计划)项目(2015AA043002);国家自然科学基金项目(51375436);浙江省重大科技专项(2016C01G5130970).


Modeling Analysis of Abrasive Wear
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    摘要:

    磨粒磨损作为磨损的主要类型之一,影响机械使用寿命。针对犁沟磨损机制,用球形、圆锥形和圆台形磨粒模型分析其磨粒磨损的磨损率和摩擦因数,考虑磨粒数量与磨粒尺寸间的指数关系,分析磨损率随磨粒数量和磨粒尺寸的变化,计算平均摩擦因数随磨粒数量及其参数的变化。研究结果表明,球形磨粒模型的磨损率随着磨粒的减小和磨粒数量的增加而减小,其摩擦因数随着磨粒数量的增多而增大;圆锥形磨粒模型的磨损率随着磨粒的增大与数量的增多而增大,其摩擦因数随着倾斜角的增大而增大;圆台形磨粒模型的磨损率变化趋势与球形磨粒一致,但其摩擦因数变化的趋势与球形磨粒相反。

    Abstract:

    Abrasive wear is a major mechanism that affects the service lives of machines.For the ploughing wear mechanism,the wear debris is modeled respectively with spherical,conical and frustum with spherical tip particles to study the wear rate and friction coefficient of abrasive wear.With the consideration of the change of number of wear debris with particle size,the relationship between wear rate and debris amount and its size was analyzed,and the changes of the value of mean friction coefficient with debris number and its geometry parameters were computed.The results demonstrate that the wear rate of the spherical abrasive model is decreased with the decreasing of particle size and the increase of particle number,and its friction coefficient is increased with the increasing of particle number.The wear rate of the conical abrasive model is increased with the increasing of particle size and its number,and its friction coefficient is increased with the increasing of conical angle.The change trend of wear rate of the cone abrasive model is the same as that of spherical abrasive model,however the changing of its friction coefficient is in the opposite way.

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张勇强,汪久根,洪玉芳.磨粒磨损的模型化分析[J].润滑与密封,2017,42(11):13-18.
. Modeling Analysis of Abrasive Wear[J]. Lubrication Engineering,2017,42(11):13-18.

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  • 在线发布日期: 2018-03-16
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