Experimental study on vibration control of misaligned rotors with elastic damping support
                                                  YU Dongdong, HE Lidong, CHEN Zhao, FAN Wenqiang
(Engineering Research Center of Chemical Technology Safety Ministry of Education,Beijing University of Chemical Technology, Beijing 100029, China)

Abstract: Aiming at the problem of large vibration during the misalignment of rotating machinery operation, an elastic damping support structure was independently designed to investigate the effect of the elastic damping support structure on the vibration of singlespan misalignment rotor. The mechanism of the doublefrequency vibration of misaligned rotors was analyzed by establishing the singlerotor misalignment mechanics model, and the damping effect of the elasticdamping supports on the rotors of the faults was simulated by finite element software. A singlespan doublesupport rotor test was built on this basis. The simulation of the misalignment of the rotor by the bearing seats of the raised seats was carried out to study the control effect of a single elastic damping support on the vibration of the misaligned rotor. The research results show that a single elastic damping support can effectively reduce its onetime frequency and secondfrequency vibration amplitude when a singlespan rotor system is misaligned. The doublefrequency vibration reduction is reduced by 93%, and the vibration reduction effect is very obvious.

Key words: elastic damping support; vibration control; misalignment