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国外文献 > 1.轴承 > 1. 基础理论与机制 > 承载与性能

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标 题： A Methodology to Measure Power Losses of Rolling Element Bearings under Combined Radial and Axial Loading Conditions
一种用于测量滚动轴承在径向和轴向联合载荷条件下功率损耗的方法
作 者： A. Dindar
I. Hong
A. Garg
A. Kahraman
关键词： Ball bearing  [滚珠轴承]
Power loss  [ 电力中断]
Test setup  [ 测试设置]
Combined loading  [ 组合载荷]
Temperature  [ 温度]
出版年： 2022
期刊名： Tribology Transactions
《摩擦学学报》
年卷期： 2022, vol.65, no.1
摘 要： In this study, an experimental methodology is presented for measuring power losses of rolling element bearings under combined radial and axial loading conditions. The setup developed for this purpose consists of a pair of test bearings and another pair of center bearings whose function is to transmit the radial load to the test bearings. The center bearings are isolated from any axial load that is carried by the test bearings. The proposed methodology relies on a family of separate measurements to (1) remove center bearing losses from the losses of the test bearings and (2) separate load-independent (spin) and load-dependent (mechanical) components of power losses of the test bearings. The setup includes a precise lubricant delivery system that controls flow rate and temperature of oil supplied to each test and center bearing individually. Because the bulk temperatures of bearings tested impact the measured power losses significantly, a heat management system is implemented to maintain the bearing bulk temperatures at the same value as the set levels of the oil inlet temperature. The methodology is demonstrated on two deep-groove ball bearings of different sizes, considering wide ranges of axial and radial forces, rotational speed, oil flow rate, and oil inlet temperature (oil viscosity). The influence of bearing bulk temperatures on power loss measurements is demonstrated as well as the repeatability of the proposed methodology. Furthermore, spin and mechanical loss measurements are compared to a widely used calculation method to assess their accuracy.

在本研究中，提出了一种用于测量滚动轴承在径向和轴向联合载荷条件下的功率损耗的实验方法。为此目的而开发的装置包括一对测试轴承和另一对中心轴承，其作用是将径向载荷传递给测试轴承。中心轴承与测试轴承所承受的轴向载荷隔离开。所提出的这种方法依赖于一系列独立的测量来（1）从测试轴承的损耗中去除中心轴承的损耗，并（2）将测试轴承功率损耗中的与载荷无关（旋转）部分和与载荷有关（机械）部分分开。该装置包括一个精确的润滑剂供应系统，该系统能够单独控制供应给每个测试轴承和中心轴承的油的流量和温度。由于测试轴承的总体温度对测量的功率损耗有显著影响，因此实施了一个热管理系统，以将轴承的整体温度保持在与油入口温度设定值相同的水平。该方法在两种不同尺寸的深沟球轴承上进行了验证，考虑了轴向和径向力、转速、油流量、油入口温度（油粘度）的广泛范围。还展示了轴承整体温度对功率损失测量的影响，以及所提出方法的重复性。此外，将旋转和机械损耗测量与一种广泛使用的计算方法进行了比较，以评估其准确性。
中文内容为网络AI翻译，专业术语未必准确，仅供参考。

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