Research on Dynamic Characteristics of Ball Bearing-Offset Disk Rotor System with Whirling-Swing Coupling Vibration

Liang Mingxuan; Yuan Huiqun; CAI Ying-ying

Journal of Vibration and Shock ›› 2014, Vol. 33 ›› Issue (12) : 35-41.

PDF(2452 KB)
PDF(2452 KB)
Journal of Vibration and Shock ›› 2014, Vol. 33 ›› Issue (12) : 35-41.
论文

Research on Dynamic Characteristics of Ball Bearing-Offset Disk Rotor System with Whirling-Swing Coupling Vibration

  • Liang Mingxuan1,2 Yuan Huiqun1,2 CAI Ying-ying2
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Abstract

A dynamic model of ball bearing-offset disk rotor system with whirling-swing coupled vibration is presented, in which the rotor disk offset and disk swing vibration are concerned, in the model of ball bearing, the clearance of bearing, nonlinear Hertzian contact force between balls and races and the varying compliance vibration are considered. Numerical methods are adopted to solve and compare the dynamic response of the system under different disk offset whether considering the disk swing vibration or not. Effects of bearing clearance variation on the dynamic performance of the model under different rotor disk offset are investigated. It is shown that the nonlinear dynamic response of the offset disk rotor system enhances obviously when rotor disk swing vibration is considered. The system contains diverse frequency components under different rotor disk offset even though working at the same speed. As rotor disk offset increasing, the sensitivity of critical speed to bearing clearance variation improves.

Key words

ball bearing / offset disk rotor / whirling- swing coupling / nonlinear / bearing clearance

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Liang Mingxuan; Yuan Huiqun; CAI Ying-ying. Research on Dynamic Characteristics of Ball Bearing-Offset Disk Rotor System with Whirling-Swing Coupling Vibration[J]. Journal of Vibration and Shock, 2014, 33(12): 35-41
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