Experiment on effect of gas film constraint on natural frequency of gas bearing-rotor system

HAN Dong-jiang; YANG Jin-fu; ZHANG Zhan-yi

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Experiment on effect of gas film constraint on natural frequency of gas bearing-rotor system

更新时间：2026-07-07

- Experiment on effect of gas film constraint on natural frequency of gas bearing-rotor system
- Vol. 27, Issue 7, (2012)
- 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
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2012
- 稿件说明：
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HAN Dong-jiang, YANG Jin-fu, ZHANG Zhan-yi. Experiment on effect of gas film constraint on natural frequency of gas bearing-rotor system[J]. 2012, 27(7).
DOI：

HAN Dong-jiang, YANG Jin-fu, ZHANG Zhan-yi. Experiment on effect of gas film constraint on natural frequency of gas bearing-rotor system[J]. 2012, 27(7). DOI：

摘要

对10kg转子进行自由状态和有气膜约束两种状态下的试验模态分析

试验结果给出了转子平动、锥动和一阶弯曲时的固有频率及其振型等模态参数

分析了轴承供气压力变化对轴系固有频率的影响.进行了轴系升降速试验

结果表明:气膜约束下的模态分析结果比自由状态下的更接近于升降速试验的结果.试验结果为气体轴系固有频率的确定以及控制参数的选取提供了依据

也为下一步轴系振动控制奠定了基础.

Abstract

Experimental modal analysis (EMA) was presented on the 10kg rotor in free constraint state and gas film constraint state.The experimental results were given including rotor translation

conical moving and the first bending natural frequency and modal shape.The effect of gas film constraint on natural frequency of gas bearing-rotor system was analyzed by the experiment.EMA under gas film constraint was closer to the raising speed experimental results.The results provide a basis to determine the natural frequency of the gas shaft and to choose the control parameters.Also

it lays a foundation for vibration controlling of the gas bearing-rotor system.

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