Volume 36 Issue 6
Jun.  2021
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LIN Xuesen, LI Benwei, HUANG Shuai, ZHANG Yun. Analysis and test of rotor support damping based on vibration response model of whole engine[J]. Journal of Aerospace Power, 2021, 36(6): 1273-1285. doi: 10.13224/j.cnki.jasp.2021.06.016
Citation: LIN Xuesen, LI Benwei, HUANG Shuai, ZHANG Yun. Analysis and test of rotor support damping based on vibration response model of whole engine[J]. Journal of Aerospace Power, 2021, 36(6): 1273-1285. doi: 10.13224/j.cnki.jasp.2021.06.016
shu

Analysis and test of rotor support damping based on vibration response model of whole engine

doi: 10.13224/j.cnki.jasp.2021.06.016
  • 1.

    Naval Research Institute,the Chinese People’s Liberation Army,Beijing 100161,China

  • 2.

    Aviation Foundation Institute,Naval Aviation University,Yantai Shandong 264001,China

  • 3.

    Naval Equipment Department in Changzhou Regional Military Representative Office,the Chinese People’s Liberation Amry,Changzhou Jiangsu 213022,China

  • Received Date: 2020-04-05
  • Publish Date: 2021-06-28
    Abstract
  • An aviation engine was taken as an example to establish the engine vibration simulation system, and the different structural squeeze film damper (SFD) modeling methods affecting the vibration response of the whole engine were analyzed. Meanwhile, the multi-position and multi-sensor vibration response test of the steady working condition was adopted to verify the accuracy of the model. Based on the calculation of the whole machine vibration system model and the oil interruption test of this engine, the effects of the squeeze oil film damping value at the front fulcrum of the gas generator (No.1 fulcrum) and the rear fulcrum of the free turbine (No.3 fulcrum) on the engine were discussed. Under the stable condition, the result showed that the engine vibration response first decreased and then increased as the No.1 fulcrum oil film damping value increased, and decreased as the No.3 fulcrum oil film damping value increased. By reducing the squeeze oil film damping value at the No.1 fulcrum appropriately, the total vibration response of the engine could be reduced by 43.4% under the maximum continuous working condition.

     

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