Volume 29 Issue 11
Nov.  2014
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Article Navigation >  Journal of Aerospace Power  > 2014  >  29(11): 2758-2766
XU Fang-cheng, LIU Zhan-sheng, ZHANG Wen, MA Rui-xian, WANG Yu. Experimental of foil friction effects on dynamics characteristicof rotor-foil bearing system[J]. Journal of Aerospace Power, 2014, 29(11): 2758-2766. doi: 10.13224/j.cnki.jasp.2014.11.030
Citation: XU Fang-cheng, LIU Zhan-sheng, ZHANG Wen, MA Rui-xian, WANG Yu. Experimental of foil friction effects on dynamics characteristicof rotor-foil bearing system[J]. Journal of Aerospace Power, 2014, 29(11): 2758-2766. doi: 10.13224/j.cnki.jasp.2014.11.030
shu

Experimental of foil friction effects on dynamics characteristicof rotor-foil bearing system

doi: 10.13224/j.cnki.jasp.2014.11.030

  • 1. School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China;

  • 2. China Academy of Launch Vehicle Technology, China Aerospace Science and Technology Corporation, Beijing 100076, China

  • Received Date: 2013-07-08
  • Publish Date: 2014-11-28
    Abstract
  • In order to study the effects of foil friction between bump foil and bearing housing on dynamics characterict of rotor-foil bearing system, a test rig was developed for bump-type gas foil bearing. By experiment comparing between two sets of bearing supporting a 0.458kg rotor which have different surface roughness of bearing housing cylindrical hole with speed from 0-80000r/min, the effects of friction between bump foil and bearing housing on rotor dynamics charecteristic are studied. The results indicate that bump-type gas foil journal bearing with 19.98mm diameter can support the rotor's stable running at a quite high speed, and the vibration amplitude at bearing support is around 20μm. Reducing the surface roughness (friction coefficient) of bearing housing cylindrical hole enables relatively easy slippage of bump foil between the top foil and bearing housing, helping to absorb and eliminate high frequency vibration of rotor, and improve the stability of rotor system.

     

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