Journal of Northeastern University Natural Science ›› 2019, Vol. 40 ›› Issue (5): 688-693.DOI: 10.12068/j.issn.1005-3026.2019.05.016

• Mechanical Engineering • Previous Articles     Next Articles

Vibration Characteristics Study for the Hard Coating Blisk Using Finite Element Method

GAO Feng1,2, SUN Wei1,2, GAO Jun-nan 1,2   

  1. 1. School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, China; 2. Key Laboratory of Ministry of Education on Vibration and Its Control of Aerospace Power Equipment, Northeastern University, Shenyang 110819, China.
  • Received:2018-03-16 Revised:2018-03-16 Online:2019-05-15 Published:2019-05-17
  • Contact: SUN Wei
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Abstract: Vibration characteristics of hard coating blisk and the damped vibration reduction of hard coating were investigated using finite element method. Firstly, the equation of motion of hard coating blisk was achieved according to the energy method and the Mindlin plate theory and the complex modulus theory; then, modal characteristics and forced vibration response of hard coating blisk were solved; finally, a blisk with NiCoCrAlY+YSZ deposition hard coating on both sides of blades was taken as study case, the finite element model of hard coating blisk was validated by the theoretical analysis and experimental test. The results reveal that the NiCoCrAlY+YSZ hard coating has weak effect on natural frequencies, but a strong damping effect on the blisk, and forced responses of the blisk were suppressed remarkably by the NiCoCrAlY+YSZ hard coating.

Key words: blisk, damped vibration reduction, hard coating, finite element method, dynamic analysis

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