国外文献 > 1.轴承 > 2. 轴承类型与部件 > 滑动轴承
关键词搜索：
| 标 题： |
A combined approach to study and model the effect of viscous heating in small porous, self lubricating journal bearings
结合方法研究和建模小孔隙自润滑滑动轴承中粘性加热的影响 |
| 作 者： |
Trachsel, Mathis
Pittini, Raniero
Dual, Jurg |
| 关键词： |
Journal bearing [圆柱滚子轴承]
Hydrodynamic lubrication [ 流体动力润滑]
Frictional heating [ 摩擦加热]
Temperature model [ 温度模型]
Porous bearing [ 多孔轴承] |
| 出版年： |
2017 |
| 期刊名： |
Tribology International
摩擦学国际 |
| 年卷期： |
2017, vol.116 |
| 摘 要： |
Friction torque is one of the key performance parameters of journal bearings and it is strongly influenced by the temperature dependent lubricant viscosity. In small bearings, this temperature cannot be measured directly. Therefore, a combined experimental, numerical and analytical approach is used to determine the lubricant temperature for the application in instationary Stribeck measurements. The thermal model proposed returns temperature and it is verified by FE simulations. Based on friction measurements with a Newtonian reference oil and friction models, the change in temperature is detected in a second independent way as viscosity changes with temperature. Results are presented in function of speed, clearances and for both porous and nonporous bearings. Half-frequency whirling and its effect on friction was detected.
摩擦扭矩是滚动轴承的关键性能参数之一，其受温度依赖的润滑剂粘度影响显著。在小型轴承中，该温度无法直接测量。因此，采用实验、数值和分析相结合的方法，确定用于非稳态斯特里布克（Stribeck）测量时的润滑剂温度。所提出的热力学模型能够计算出温度，并通过有限元（FE）仿真进行验证。基于牛顿参考油的摩擦测量及摩擦模型，以第二种独立方式检测了温度变化，即粘度随温度的变化。结果以转速、间隙以及多孔和非多孔轴承为变量进行了呈现。同时检测到了半频旋转现象及其对摩擦的影响。 |
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