Abstract

The paper presents dynamic analysis of a rotor with elastic shaft and the dynamic force that generates its vibration. To balance the rotor, free elements (balls or rollers) are placed in one or two drums. The balls can compensate the rotor’s unbalance or increase it depends on the parameters of the system. The balls and the rotor are in different planes and it is not obvious if the system can be balanced. The vibrational forces that act on the balls push them to new positions in which the balls can compensate the rotor unbalance, entirely or partially. Computer simulation shows what part of the rotor’s unbalance can be compensated by the balls and what the final positions the balls occupy.

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