| Citation: | ZHANG Guanghui, HUANG Yanzhong, CHEN Yalong, et al. Experiment on vibration reduction performance of elastic ring squeeze film damper under sudden unbalance[J]. Journal of Aerospace Power, 2023, 38（1）：32-40 doi: 10.13224/j.cnki.jasp.20210371
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In order to study the suppression effect of elastic ring squeeze film damper （ERSFD） on vibration of rotor system under transient impact （sudden unbalance）, the rotor dynamics experiment rig with ERSFD was designed and assembled to carry out the experiment of sudden unbalance and obtain the experimental results of the spectrum response at the speed up and down of the rotor under oil free and oil supply states. Results showed that ERSFD can effectively suppress the fundamental frequency vibration at the critical speed and transient response caused by sudden unbalance, and reduce the vibration amplitude at critical speed and additional vibration by 62.18% and 74.39% respectively; the combined effect indicated that the first critical speed of the rotor was 2.39% lower than that of the ERSFD oil free when additional stiffness and damping were introduced into the rotor system.
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