角接触球轴承的动态参数建模与试验研究

Dynamic parametric modeling and tests for angular contact ball bearings

针对角接触球轴承动态刚度和阻尼特性分析的问题,建立了考虑基础响应的单自由度动态参数测试力学模型;搭建了轴承动态参数识别试验装置,测试及分析了不同的载荷条件对轴承径向和轴向动态刚度及阻尼的影响。试验结果表明:随着轴向载荷增大,轴向刚度、径向刚度逐渐增大,轴向阻尼、径向阻尼先减小后增大;随着径向载荷增大,轴向刚度、径向刚度逐渐增大,轴向阻尼、径向阻尼先增大后减小再增大。

Aiming at dynamic stiffness and damping characteristics analysis problems of an angular contact ball beating , a single-DOF dynamic model of such a bearing considering foundation response was built to identify its dynamic parameters here. An experimental device for identifying the bearing dynamic parameters was developed to test and analyze the effects of different loads on the radial and axial dynamic stiffnesses and dampings of the bearing. Test results showed that with increase in axial loads, the axial stiffness and the radial one increase, the axial damping and the radial one forstly decrease and then incrase; with increase in radial loads, the axial stiffness and the radial one increase, the axial dumping and the radial one firstly increase and then decrease, and fuhher increase again.