Dynamic Modeling and Vibration Response Simulation for High Speed Rolling Ball Bearings With Localized Surface Defects in Raceways

Abstract

A dynamic model is developed to investigate vibrations o f high speed rolling ball bear ings with localized surface defects on raceways. In this model, each bearing component (i.e., inner raceway, outer raceway and rolling ball) has six degrees o f freedom (DOFs) to completely describe its dynamic characteristics in three-dimensional space. Gyro scopic moment, centrifugal force, lubrication traction!slip between bearing component are included owing to high speed effects. Moreover, local defects are modeled accurately and completely with consideration o f additional deflection due to material absence, changes o f Hertzian contact coefficient and changes o f contact force directions due to raceway curvature variations. The obtained equations o f motion are solved numerically using the fourth order Runge-Kutta-Fehlberg scheme with step-changing criterion. Vibration responses o f a defective bearing with localized surface defects are simulated and analyzed in both time domain and frequency domain, and the effectiveness o f fault feature extraction techniques is also discussed. An experiment is carried out on an aero space bearing test rig. By comparing the simulation results with experiments, it is con firmed that the proposed model is capable o f predicting vibration responses o f defective high speed rolling ball bearings effectively.

Global Sensitivity Analysis of High Speed Shaft Subsystem of a Wind Turbine Drive Train

“…An inner raceway rotates with shaft's rotation and goes through the loaded zone of bearing every rotation. This mechanism shows that the vibration of inner raceway with defect is modulated by the shaft rotation [39][40][41].…”

“…For future work, it is important to consider also ball mass inertia and outer ring dynamics [40,41].…”

Multi-body modelling of rolling element bearings and performance evaluation with localised damage

“…Thus, the balls were not assumed to be equidistant. Niu et al [26] introduced not only the lubrication tractive forces but also two translational DOF for the pedestal motion. Kogan et al [20] combined the model of an angular contact ball bearing to obtain a model for a duplex angular contact ball bearing.…”

“…The majority of the literature on dynamic models of REBs focuses on ball bearings, with single-row deep-groove ball bearings receiving the most attention. Other dynamic models are related to other configurations of single-row ball bearings, such as angular-contact ball bearings [5,15,26,42]. There are a few models for double-row ball bearings in the research literature [20,46].…”

Dynamic modelling for vibration analysis of a cylindrical roller bearing due to localized defects on raceways

“…In Ashtekar's model, the defect was modelled as an equivalent ellipsoid in contact with the original bearing components geometry. Niu et al 53 studied the fault mechanism, and the effects of defect sizes, rotation speed and radial loads on the bearing vibration response were investigated. To sum up, the dynamic model is an effective method to analyse defective bearings.…”