Influence of Nonlinearity Factors of Rolling Bearings on Vibration Characteristics of Rotor System

doi:10.12068/j.issn.1005-3026.2019.08.013

Abstract

Abstract: Aiming at the hysteresis jump of a rotor system supported by rolling bearings during operation， by using the HB-AFT method embedded in the homotopy arc extension， the interval of the hysteresis jump of the rotor system supported by rolling bearings can be quickly calculated. The Floquent theory is used to determine the stability， and the effects of bearing equivalent stiffness， bearing clearance and linear damping coefficient on the hysteresis jump of the rotor system are analyzed. The results show that the variation of bearing clearance and bearing equivalent stiffness within a certain range will affect the hysteresis jump range of the rotor system， and the damping coefficient only affects the system’s vibration amplitude near the critical speed of the rotor system. The results of the study provide a theoretical reference for setting the bearing-rotor system parameters.

Key words: rolling bearing, nonlinearity, rotor system, vibration characteristics, hysteresis jump

CLC Number:

V214.1

LUO Zhong， ZHOU Yi-fu， BIAN Zi-fang， WANG Fei. Influence of Nonlinearity Factors of Rolling Bearings on Vibration Characteristics of Rotor System[J]. Journal of Northeastern University Natural Science, 2019, 40(8): 1131-1138.

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