Effects of squeeze film damper concentricity and rubbing on rotor vibration characteristics

被引：0

作者：

Li Y. ^{[1
]}

Liao M. ^{[1
]}

Wang S. ^{[1
]}

Zhao Q. ^{[1
]}

Zhao L. ^{[1
]}

机构：

[1] School of Power and Energy, Northwestern Polytechnical University, Xi'an

来源：

Zhendong yu Chongji/Journal of Vibration and Shock | 2020年 / 39卷 / 01期

关键词：

Assembly non-concentricity; Dynamic model; Rotor; Squeeze film damper (SFD); Vibration response;

D O I：

10.13465/j.cnki.jvs.2020.01.021

中图分类号：

学科分类号：

摘要：

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 rubbing to excite the rotor's reverse precession natural frequency, and the rotor's vibration amplitude fluctuates violently. © 2020, Editorial Office of Journal of Vibration and Shock. All right reserved.

引用

页码：150 / 156and174

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