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首页> 外文会议>American Society of Mechanical Engineers(ASME)/Society of Tribologists and Lubrication Engineers(STLE) International Joint Tribology Conference 2004(IJTC 2004) vol.1 pt.A; 20041024-27; Long Beach,CA(US) >HEAT PARTITION IN ROLLING/SLIDING ELASTOHYDRODYNAMIC CONTACTS
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HEAT PARTITION IN ROLLING/SLIDING ELASTOHYDRODYNAMIC CONTACTS

机译：滚动/滑动弹性水力接触中的热分配

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The paper presents the results of a thermal analysis of a set of disk experiments carried out by Patching et al. to investigate scuffing. The experiments used crowned steel disks at 76 mm centres with maximum Hertzian contact pressures of up to 1.7 GPa. Experimental measurements of contact friction were used as the basis for a thermal analysis of the disks and their associated support shafts. Temperatures measured by embedded thermocouples 3 mm below the running tracks of the disks were used to determine the heat partition between the faster and slower running disks in order to match the experimental with calculated temperatures. This partition was found to vary approximately as a function of the product of sliding speed and surface temperature difference. A transient (flash) temperature analysis of one of the experiments was also carried out. This shows large differences between the disk transient surface temperatures. These surface temperature distributions were compared with those obtained from corresponding elastohydrodynamic lubrication (EHL) analyses using two different non-Newtonian lubricant formulations. The EHL analyses show that the heat partition obtained depends on the form of non-Newtonian behaviour assumed, and that to achieve the same partition as is evident in the experiment a limiting shear stress formulation is necessary. It is suggested that the combination of heat transfer and EHL analysis presented in the paper could be used as a sensitive tool for distinguishing between different non-Newtonian lubricant models under realistic engineering loads and with high sliding speeds.
机译：本文介绍了Patching等人进行的一组磁盘实验的热分析结果。调查磨损情况。实验使用中心直径为76 mm的拱形钢盘，最大赫兹接触压力高达1.7 GPa。接触摩擦的实验测量值被用作磁盘及其相关支撑轴热分析的基础。磁盘运行轨迹下方3毫米处的嵌入式热电偶测量的温度用于确定快慢运行的磁盘之间的热量分配，以使实验与计算出的温度相匹配。发现该分隔物大约是滑动速度和表面温度差的乘积的函数。还进行了其中一项实验的瞬态（快速）温度分析。这表明磁盘瞬态表面温度之间存在很大差异。将这些表面温度分布与使用两种不同的非牛顿润滑剂配方从相应的弹性流体动力润滑（EHL）分析获得的表面温度分布进行了比较。 EHL分析表明，获得的热量分配取决于假定的非牛顿行为的形式，并且要获得与实验中明显相同的热量分配，必须采用极限剪切应力公式。建议将本文中传热和EHL分析相结合，可以用作区分实际工程载荷和高滑动速度下不同非牛顿润滑油模型的灵敏工具。

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