Heat Partitioning Coefficient Calculations for Sliding Contacts with Friction
Heat Partitioning Coefficient Calculations for Sliding Contacts with Friction
复制标题
带摩擦的滑动接触的热分配系数计算
DOI：
10.1080/10402000701739248
复制
发表时间：
2008
影响因子：
2.1
通讯作者：
T. Ovaert
中科院分区：
文献类型：
--
作者：
Lingrong He;T. Ovaert
在具有高Peclet数的滑动接触中，摩擦热在接触表面之间分配，并且在很大程度上取决于接触材料的几何形状、热物理性质和接触条件。在这项调查中，接触温度和热分配系数计算根据Challen和Dowson和Harpavat的分析之间的比较。在Challen和Dowson分析中，移动表面被视为半空间，对流热损失仅从固定垫到周围环境。在Harpavat分析中，移动表面具有有限厚度，并且移动表面和固定垫都通过对流传递热量。几个案例进行了检查，并从两个模型的结果进行了比较。这些分析对设计人员非常有用，特别是那些在滑动接触中面临热管理挑战的设计人员，以及摩擦学测试，其中准确的接触温度估计和分配系数对于解释聚合物和聚合物复合材料等温度敏感材料的结果是必要的。
In a sliding contact with a high Peclet number, frictional heat is partitioned between the contacting surfaces and depends heavily on the geometry, the thermo-physical properties of the contacting materials, and contact conditions. In this investigation, comparisons are made between contact temperatures and heat partitioning coefficients computed according to the analyses of Challen and Dowson and Harpavat. In the Challen and Dowson analysis, the moving surface is treated as a half-space, with convective heat loss only from the stationary pad to the surroundings. In the Harpavat analysis, the moving surface has finite thickness, and both the moving surface and stationary pad transfer heat via convection. Several cases are examined and a comparison of the results from the two models is made. The analyses are useful for designers, particularly those facing thermal management challenges in sliding contacts, and for tribological testing, where an accurate contact temperature estimate and partitioning coefficient are necessary to interpret the results for temperature-sensitive materials such as polymers and polymer composites.