文献类型：期刊文献

中文题名：考虑刚性转子非线性振动的圆柱滚子轴承动态特性研究

英文题名：Dynamic characteristics of cylindrical roller bearings considering nonlinear vibration of a rigid rotor system

作者：崔立[1];郑建荣[1]

机构：[1]华东理工大学机械与动力工程学院,上海200237

年份：2010

卷号：29

期号：10

起止页码：113

中文期刊名：振动与冲击

外文期刊名：Journal of Vibration and Shock

收录：CSTPCD;;EI(收录号：20105013489790);Scopus;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金(50905061)

语种：中文

中文关键词：圆柱滚子轴承;刚性转子;非线性振动;动态特性

外文关键词：cylindrical roller bearing;rigid rotor system;nonlinear vibration;dynamic characteristics

摘要：圆柱滚子轴承支承的转子系统由于赫兹接触力会使系统产生复杂的非线性振动,考虑圆柱滚子轴承的四个自由度推导了非线性轴承力,在此基础上建立了滚子轴承-刚性转子系统的四自由度非线性振动方程,使用Newmark-β法和Newton-Laphson法求解方程。给出了考虑刚性转子非线性振动计算滚子轴承动态特性的方法,分析了非线性振动对滚子轴承动态性能的影响,在滚子轴承转子实验台上测试了轴承的动态性能。结果表明,在转子系统的非周期振动范围,滚子轴承的保持架打滑率、刚度等动态特性会出现较大的变化,可能会引起轴承失效。考虑转子系统非线性振动,使得滚子轴承动态特性的预测结果准确度有较大提高。
A rigid rotor system supported by cylindrical roller bearings displays complicated nonlinear vibration behavior due to nonlinear Hertzian contact force.The nonlinear force and moment caused by roller bearings were calculated based on relationship of displacement and deflection,and four-DOF dynamic equations of a rotor-roller bearing system were established.Newmark-β method and Newton-Raphson method were used to solve the nonlinear equations.The dynamic characteristics of roller bearings were computed considering the nonlinear vibration of the rotor system,the effects of the vibration of the rotor system on the bearing dynamic characteristics were analyzed,and the dynamic performance of roller bearings was tested in a test bench.The results showed that the slide ratio of cage and the stiffness of roller bearing vary obviously in non-periodic vibration range of the rotor,which may cause failure of bearing.The prediction accuracy of the dynamic characteristics of roller bearing was greatly improved considering nonlinear vibration of rotor system.