Nonlinear Dynamic Analysis of a Rolling Bearing-Rotor System with an Inner Ring Fault

Abstract

Taking the rolling bearing-rotor system as the research object, this study couples the damage dynamics model of the inner ring of the rolling bearing into the system. Using the numerical integration method, the vibration characteristics of the rolling bearing are investigated in detail. The motion state under specific working conditions is analyzed, and the motion law is revealed. The results show that the fault frequency generated by the bearing defect is related to the bearing type and the system speed.