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.
张小龙 魏井福 东亚斌 何育民. 滚珠自动控制转子系统强迫振动研究（1/2次分数谐波振动）[J]. 振动与冲击, 2017, 36(21): 23-27.
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). JOURNAL OF VIBRATION AND SHOCK, 2017, 36(21): 23-27.
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