Volume 27 Issue 8
Aug.  2012
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LUO Gui-huo, ZHOU Hai-lun, WANG Fei, YANG Xi-guan. Dynamic response of co-rotating and counter-rotating dual-rotor system supported on ball bearing[J]. Journal of Aerospace Power, 2012, 27(8): 1887-1894.
Citation: LUO Gui-huo, ZHOU Hai-lun, WANG Fei, YANG Xi-guan. Dynamic response of co-rotating and counter-rotating dual-rotor system supported on ball bearing[J]. Journal of Aerospace Power, 2012, 27(8): 1887-1894.

Dynamic response of co-rotating and counter-rotating dual-rotor system supported on ball bearing

  • Received Date: 2011-09-15
  • Publish Date: 2012-08-28
  • The dual rotor-ball bearing-stator coupling dynamic model was established for the aero-engine with dual rotor as to research object.The model concerned the coupling effect of inter-rotor bearing between the low pressure rotor and high pressure rotor,between the outer race of ball bearing and bearing housing,and between the flexible support and squeeze film damper.In the model of ball bearings,the clearance of bearing,nonlinear Hertzian contract force between balls and races and the varying compliance vibration were considered.The beat vibration response and whirl orbit of co-rotating or counter-rotating dual-rotor system were analyzed by using the model.The results show that the beat vibration response occurs obviously when two rotors operate at approximate speed,the whirl orbit of the counter-rotating dual-rotor system will be the petal shape.Finally,the results of numerical integral and the model were validated with the experiments of the dual rotor rig.

     

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