The influence of the lubricant viscosity on the rolling friction torque
The influence of the lubricant viscosity on the rolling friction torque
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DOI：
10.1016/j.triboint.2013.11.017
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发表时间：
2014-04-01
影响因子：
6.2
通讯作者：
Olaru, Dumitru N.
中科院分区：
文献类型：
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作者：
Balan, Mihaela Rodica D.;Stamate, Vasile Ciprian;Olaru, Dumitru N.
作者提出了一种理论模型和实验方法，用于定义在混合和全油膜润滑条件下运行的改良推力球轴承中的摩擦扭矩。使用旋转下降方法在低负载和大 A 参数范围下测量摩擦扭矩。使用弹性滚动阻力、曲率效应、惯性力、盘空气阻力和滚珠座圈流体动力滚动力描述了综合分析轴承扭矩模型，后者解释了 98% 的最终轴承扭矩。测试了几组关于从 IVR 到 EHL 润滑状态过渡的流体动力轧制力关系。最终的数值结果在全膜和混合润滑条件下都非常接近实验结果。 (C) 2013 Elsevier Ltd. 保留所有权利。
Authors propose a theoretical model and an experimental methodology for defining the friction torque in a modified thrust ball bearing, operating in mixed and full film lubrication conditions.The friction torque was measured at low loads and large A parameter range using a spin-down method.A comprehensive analytical bearing torque model is described using elastic rolling resistance, curvature effects, inertia forces, disc-air resistance and ball-races hydrodynamic rolling forces, the latter explaining 98% of the final bearing torque. Several sets of hydrodynamic rolling force relationships respecting the transition from IVR to EHL lubrication regime were tested. Final numerical results are shown to be very close to the experimental ones in both full film and mixed lubrication conditions. (C) 2013 Elsevier Ltd. All rights reserved.