Experimental research on nonlinear dynamic characteristic of gas lubrication bearings and high speed rotors

CHEN Ce; YANG Jin-fu; NIE Chao-qun

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Experimental research on nonlinear dynamic characteristic of gas lubrication bearings and high speed rotors

更新时间：2026-07-07

- Experimental research on nonlinear dynamic characteristic of gas lubrication bearings and high speed rotors
- Vol. 23, Issue 8, (2008)
- 作者机构：
  
  1. 中国科学院工程热物理研究所,北京,100190
  2. 中国科学院研究生院,北京,100039
  3. 北京航空工程技术研究中心,北京,100076
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2008
- 稿件说明：
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CHEN Ce, YANG Jin-fu, NIE Chao-qun. Experimental research on nonlinear dynamic characteristic of gas lubrication bearings and high speed rotors[J]. 2008, 23(8).
DOI：

CHEN Ce, YANG Jin-fu, NIE Chao-qun. Experimental research on nonlinear dynamic characteristic of gas lubrication bearings and high speed rotors[J]. 2008, 23(8). DOI：

摘要

对高速气体润滑轴承转子系统进行了稳定性试验研究.通过轴心轨迹、频率耦合三维图、频谱和分叉图

分析了系统非线性行为特征.实验证明气体润滑轴承-转子系统中的气膜涡动是系统非线性失稳的主要原因

气膜涡动导致的倍周期分叉是系统进入混沌振动的必由途径.通过调整系统固有频率和气膜润滑涡动频率之间的耦合关系

使得失稳转速远离设计转速;以及利用试验中所证实的混沌"有界"性质

有效的控制振幅

将是提高转子-轴承系统非线性稳定性的新途径.

Abstract

A stability experiment on high speed rotor and gas lubrication bearings was presented in this paper.Based on shaft center orbits

frequency coupling 3-D plot

frequency spectrum and bifurcation plot

the nonlinear characteristics of rotor bearing system were analyzed.The experiment proved that

gas whirl in gas bearing and rotor system was a major contributing factor to nonlinear instability.Double periodic bifurcation caused by gas whirl was an inevitable path to chaos vibration.The instability rotational speed will vary a lot from design speed by modulation of the coupling relationship between system's inherent frequency and gas whirl frequency

meanwhile effective control of chaos vibration based on bounded ness of chaos is a new method to improve nonlinear stability of rotor and bearings.

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