Volume 23 Issue 7
Jul.  2008
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CHEN Guo, LI Cheng-gang, WANG De-you. Nonlinear dynamic analysis and experiment verification of rubbing faults of rotor-ball bearing-support-stator coupling system for aero-engine[J]. Journal of Aerospace Power, 2008, 23(7): 1304-1311.
Citation: CHEN Guo, LI Cheng-gang, WANG De-you. Nonlinear dynamic analysis and experiment verification of rubbing faults of rotor-ball bearing-support-stator coupling system for aero-engine[J]. Journal of Aerospace Power, 2008, 23(7): 1304-1311.

Nonlinear dynamic analysis and experiment verification of rubbing faults of rotor-ball bearing-support-stator coupling system for aero-engine

  • Received Date: 2007-06-28
  • Rev Recd Date: 2007-09-25
  • Publish Date: 2008-07-28
  • Anew rotor-ball bearing-support-stator coupling system dynamic model including rubbing fault was established for rotor-bearing system of practical aeroengine.In the model,the stator motion,the flexible support,squeeze film damper(SFD) were considered,and the nonlinear factors of ball bearing such as the clearance of bearing,nonlinear Hertzian contract force between balls and races,and the varying compliance vibration because of periodical variety of contact position between balls and races were modeled.The numerical integral method was employed to obtain system's responses,and an aeroengine tester with stator was established to carry out rubbing fault experiment.Finally,the simulation results from rotor-ball bearing-support-stator coupling model were compared with the experiment results in order to indicate the validity of the new model.

     

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