Volume 29 Issue 1
Jan.  2014
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XU Fang-cheng, LIU Zhan-sheng, MA Rui-xian, HUANG Fei-lin. Dynamic performance tests of bump-type gas foil journal bearing-rotor system in start-up and shut-down procedures[J]. Journal of Aerospace Power, 2014, 29(1): 216-224. doi: 10.13224/j.cnki.jasp.2014.01.028
Citation: XU Fang-cheng, LIU Zhan-sheng, MA Rui-xian, HUANG Fei-lin. Dynamic performance tests of bump-type gas foil journal bearing-rotor system in start-up and shut-down procedures[J]. Journal of Aerospace Power, 2014, 29(1): 216-224. doi: 10.13224/j.cnki.jasp.2014.01.028

Dynamic performance tests of bump-type gas foil journal bearing-rotor system in start-up and shut-down procedures

doi: 10.13224/j.cnki.jasp.2014.01.028
  • Received Date: 2012-12-07
  • Publish Date: 2014-01-28
  • In order to study the dynamic performance of bearing-rotor system supported by bump-type gas foil journal bearing, a test bed was designed for bump-type gas foil journal bearing. A rotor of 0.458kg including turbine was supported by two bump-type gas foil journal bearings and multi-leaf thrust gas foil bearing, and the speed was more than 80000r/min. The experimental results show that bump-type gas foil journal bearings can offer high-speed operation stability after rotor lift-off, and the vibration displacement amplitude at bearing support is less than 20μm. The rotor lift-off speed in start-up procedure is higher than that in shut-down procedure due to asymmetric drive of turbine.

     

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