Volume 26 Issue 1
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WANG Ai-lun, LONG Qing. Forced response characteristics of bladed disks with random mistuned non-linear friction damping[J]. Journal of Aerospace Power, 2011, 26(1): 178-184.
Citation: WANG Ai-lun, LONG Qing. Forced response characteristics of bladed disks with random mistuned non-linear friction damping[J]. Journal of Aerospace Power, 2011, 26(1): 178-184.
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Forced response characteristics of bladed disks with random mistuned non-linear friction damping

  • Ministry of Education Key Laboratory of Modern Complex Equipment Design and Extreme Manufacturing,College of Mechanical and Electrical Engineering, Central South University,Changsha 410083,China

  • Received Date: 2009-12-01
  • Rev Recd Date: 2010-03-09
  • Publish Date: 2011-01-28
    Abstract
  • Based on various difficulties in study on vibration localization mechanism of bladed disks with mistuned non-linear friction damping,especially the problems like establishment and solution of non-linear mechanical model,the mechanical model of bladed disks with random mistuning of hysteretic dry friction damping was established in this thesis,and an incremental harmonic balance method was used to analyze the effects of parameters of bladed disks like degree of mistuning of dry friction force,coupled stiffness,viscous damping ratio and friction strength,on the forced response of bladed disks.Studies reveal that tuned bladed disks with non-linear friction damping may also cause vibrational energy localization phenomenon,and the random mistuning of dry friction force intensifies its vibration localization.

     

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