挤压油膜阻尼器同心度及碰摩对转子振动特性的影响

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Abstract In order to investigate vibration characteristics of a rotor system during its squeeze film dampers (SFDs) having assembly non-concentricity and rubbing fault, the dynamic model of the rotor system with SFDs was established considering SFDs’ assembly non-concentricity and rubbing fault. Its test model was built and used to conduct test verification. Theoretical analysis and test results showed that the lager the rotor whirl radius, the stronger the effects of SFD’s assembly non-concentricity on rotor vibration; the larger the SFD’s assembly non-concentricity, the smaller the rotor vibration amplitude, but the rotor system’s non-linear vibration risk increases rapidly; when eccentric ratio of SFD is too big, inner and outer races of oil film may have rubbingto excite the rotor’s reverse precession natural frequency, and the rotor’s vibration amplitude fluctuates violently.

Key words： rotor squeeze film damper (SFD) dynamic model vibration response assembly non-concentricity

Received: 27 May 2019 Published: 28 December 2019

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	LI Yan
	LIAO Mingfu
	WANG Siji
	ZHAO Qingzhou
	ZHAO Lu

Cite this article:

LI Yan,LIAO Mingfu,WANG Siji, et al. Effects of squeeze film damper concentricity and rubbing on rotor vibration characteristics[J]. JOURNAL OF VIBRATION AND SHOCK, 2020, 39(1): 150-168.

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http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2020/V39/I1/150

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