Rolling Bearing Modeling with Localized Defects and Vibration Response Simulation of a Rotor-Bearing System
(0) Rolling element bearings are widely used in rotating machinery,which are usually the weakest components that affect the operating reliability of machines.In this paper,a quasi-static model of rolling bearings is proposed based on Jones? bearing theory.By integrating the bearing model with the finite element model of a rotor,a dynamic model of the rotor-bearing system is obtained.For bearing defects modeling,a series of approximatively equally spaced force impulses are generated.The generated force is input into the dynamic model of the rotor-bearing system,and then the vibration responses are calculated using the Newmark-β time-domain integration method.The simulated vibration responses of defective bearings are compared with the measured data from a bearing test rig.The results show that it is feasible to predict vibration response caused by bearing defects with a theoretical model,which may provide useful proofs for fault diagnosis of rotor-bearing systems.
localized defects vibration simulation finite element model rolling element bearing rotor-bearing system
Hongrui Cao Yamin Li Zhengjia He
State Key Laboratory for Manufacturing Systems Engineering,Xian Jiaotong University Xian,China
国际会议
南京
英文
1-4
2013-08-20（万方平台首次上网日期，不代表论文的发表时间）