Volume 33 Issue 7
Jul.  2018
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Reduced-order modeling and vibration analysis of mistuned blisk with damping hard coating[J]. Journal of Aerospace Power, 2018, 33(7): 1595-1605. doi: 10.13224/j.cnki.jasp.2018.07.007
Citation: Reduced-order modeling and vibration analysis of mistuned blisk with damping hard coating[J]. Journal of Aerospace Power, 2018, 33(7): 1595-1605. doi: 10.13224/j.cnki.jasp.2018.07.007

Reduced-order modeling and vibration analysis of mistuned blisk with damping hard coating

doi: 10.13224/j.cnki.jasp.2018.07.007
  • Received Date: 2017-01-03
  • Publish Date: 2018-07-28
  • For mistuned blisk (integrally bladed disk), a method for damping hard coating on blades was proposed to reduce vibration and improve its working life. However, the high fidelity model of mistuned blisk with hard coating tended to characterize massive computational scales in a finite element analysis, thus a method of double reduced-order modeling was developed to deal with this defect. Degrees of freedom of mistuned blisk with hard coating were reduced by using an improved hybrid interface sub-structural component modal synthesis (HISCMS) method, the modes of mistuned blisk with hard coating were reduced based on a criterion of intensive modes and a method of subset of nominal modes (SNM). In order to investigate vibration of mistuned blisk and the influence of hard coating on blisk, a mistuned blisk with NiCoCrAlY+YSZ (yttria-stabilized zirconia) hard coating on both sides of blades was selected as example to conduct simulation. Results revealed that the method of double reduced-order modeling can improve 25.86%-42.05% computational efficiency under the premise of the accuracy of calculation, the hard coating had strong damping effect, and resonant response of mistuned blisk in resonant areas can be suppressed remarkably.

     

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