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首页> 外文期刊>International journal of surface engineering and interdisciplinary materials science >Tribologic Analysis, Wear Evolution and Torque Trend Estimation of an LSD Clutch Pack
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Tribologic Analysis, Wear Evolution and Torque Trend Estimation of an LSD Clutch Pack

机译：LSD离合器组件的摩擦学分析，磨损演变和扭矩趋势估计

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摘要

The wear phenomenon in friction clutches involves a variation in the contact pairs characteristics, defining a decay of transmissible torque properties. For multidisk clutch packs installed in electro-actuated differentials, the friction torque evolution allows to define how wear decay can influence the dynamic of the vehicle where the differential is installed in. A tribological analysis of a molybdenum-coated clutch pack was made under typical working conditions in terms of temperature, normal load and sliding speed. Friction coefficient and wear rate trends were outlined to define material characteristics through block-on-ring tests. Metallurgic studies on the specimens used in tribologic tests validated the base material used in the samples. Results from experimental analyses were used as input for a numerical study regarding wear and pressure evolutions during clutch engagement. The application of Reye's theory and Archard's law on a FE model of the clutch led to the definition of an algorithm to estimate the friction torque generated by the clutch system and the its lifetime.
机译：摩擦离合器中的磨损现象涉及触点对特性的变化，从而定义了可传递扭矩特性的衰减。对于安装在电动差速器中的多盘离合器组件，摩擦扭矩的演变可以确定磨损衰减如何影响装有差速器的车辆的动力。在典型工作条件下对涂钼的离合器组件进行了摩擦学分析在温度，正常负载和滑动速度方面的条件。概述了摩擦系数和磨损率趋势，以通过环对块测试定义材料特性。对在摩擦学测试中使用的样品进行的冶金学研究证实了在样品中使用的基础材料。来自实验分析的结果用作有关离合器接合期间磨损和压力演变的数值研究的输入。雷耶理论和阿卡德定律在离合器的有限元模型上的应用导致了一种算法的定义，该算法可估算离合器系统产生的摩擦扭矩及其寿命。

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