Study on the Forced Vibration of Rotor Controlled by an&nbsp; Automatic Ball Balancer (1/2 order Subharmonic Vibration)

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Journal of Vibration and Shock ›› 2017, Vol. 36 ›› Issue (21) : 23-27.

Study on the Forced Vibration of Rotor Controlled by an Automatic Ball Balancer (1/2 order Subharmonic Vibration)

Zhang Xiaolong, WEI Jingfu, Dong Ya Bin, He Yu Min

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Abstract

A rotor can be on-line balanced by using a balancer with two balls and its forced vibration can be suppressed well. Although, a rotor, especially supported by rolling elements bearings, often shows nonlinear character practically because of weakly elastic restoring forces caused by assembly error, etc., the relevant re-searches are mainly focused on linear one. In this paper, for the rotor acted by weakly nonlinear elastic restoring forces and balanced by two balls, based on the research about the control of principal vibration, the 1/2 order subharmonic vibration response characters and the effect of the mass of balls on the vibration amplitude are studied through theoretical analysis and numerical simulation. It can be concluded that the balls can balance the nonlinear rotor completely and suppress the amplitude of 1/2 order subharmonic vibration response well in the high speed region.

Key words

Nonlinear Rotor Systems / Ball Balancer / 1/2 Subharmonic Vibration / Vibration Control

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Zhang Xiaolong, WEI Jingfu Dong Ya Bin, He Yu Min. Study on the Forced Vibration of Rotor Controlled by an Automatic Ball Balancer (1/2 order Subharmonic Vibration)[J]. Journal of Vibration and Shock, 2017, 36(21): 23-27

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