Volume 28 Issue 5
May  2013
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LIU Yang, TAI Xing-yu, MA Hui, WEN Bang-chun. Looseness-rubbing coupling fault of dual-disk three-support rotor-bearing system[J]. Journal of Aerospace Power, 2013, 28(5): 977-982.
Citation: LIU Yang, TAI Xing-yu, MA Hui, WEN Bang-chun. Looseness-rubbing coupling fault of dual-disk three-support rotor-bearing system[J]. Journal of Aerospace Power, 2013, 28(5): 977-982.

Looseness-rubbing coupling fault of dual-disk three-support rotor-bearing system

  • Received Date: 2012-05-09
  • Publish Date: 2013-05-28
  • For looseness-rubbing coupling fault of rotor-bearing system caused by pedestal looseness,the mechanical model and finite element model of dual-disk three-support looseness-rubbing coupling fault of rotor-bearing system were established.The research of effect of rubbing stiffness and looseness stiffness on dynamics characteristics of the system was done with equivalent stiffness model on the loose support,nonlinear finite element method and contact theory.Through the relevant research and analysis,it is found that looseness-rubbing coupling fault mainly is embodied in the rubbing fault.It is also found that high and low peaks appeared alternately in the time-domain graph and the shape of the axis orbit is trapezoid.This feature can be a basis which can diagnose looseness-rubbing coupling fault.

     

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