Dynamic Modeling and Vibration Response Simulation for Rolling Ball Bearings with Local Surface Defects
(0) A dynamic model is developed in order to simulate the vibrations of rolling ball bearings caused by local surface defects on bearing raceways.In this model,each bearing element (i.e.inner ring,outer ring and rolling balls) has 6 degrees of freedom to completely describe its dynamic characteristics in three-dimensional space.The model incorporates gyroscopic effects,centrifugal forces,and lubrication tractions between bearing elements.Additionally,the vibration effect of local surface defects in raceways is modeled through surface profile changes.The obtained equations of motion are solved numerically by using fourth order Runge-Kutta-Fehlberg scheme with step-changing criterion.Vibration responses of the bearing are analyzed in both time and frequency domains.Characteristic defect frequencies and their corresponding harmonics can be seen in the spectra.The proposed model contains the three dimensional motions of each bearing element,relative slippage,lubrication effects and local surface defects,which is more comprehensive,effective and practical than studies available in literature.
dynamic model vibration simulation rolling ball bearing local surface defect
Linkai Niu Hongrui Cao 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）