Nonlinear vibrational analysis for integrally bladed disk using frictional ring damper

Sun, Yekai and Yuan, Jie and Pesaresi, Luca and Salles, Loïc (2018) Nonlinear vibrational analysis for integrally bladed disk using frictional ring damper. Journal of Physics: Conference Series, 1106. 012026. ISSN 1742-6588 (https://doi.org/10.1088/1742-6596/1106/1/012026)

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Abstract

The use of integrally bladed-disk is now very popular in turbomachinery industry since they feature significant aerodynamic and structural improvements along with a significant mass reduction. However, these integrated single structures can arise a major high cycle fatigue issue due to the lack of sufficient damping for dissipating the vibrational energy. This work describes a numerical investigation of the nonlinear dynamic behaviour and nonlinear normal mode for such a bladed-disk with frictional ring damper using the Harmonic Balanced Method (HBM) with alternating Fourier transformation. Jenkins element is used to model the nonlinear contact friction between the disc and ring damper. Using such a modeling strategy, the modal damping and resonance amplitude are directly and efficiently computed through nonlinear normal mode analysis. The initial results show the vibrational level on the blades can be effectively controlled by the parameters of the ring damper model. The effectiveness of ring damper and damping performance is evaluated. This study also indicates the nonlinear normal mode analysis based HBM may be an effective method to analyse the dynamic behaviour of the integrated bladed-disk with frictional ring damper.

  • Item type:Article
    ID code:74934
    Dates:
    Date
    Event
    5 November 2018
    Published
    1 September 2018
    Accepted
    Subjects:Technology > Mechanical engineering and machinery
    Department:UNSPECIFIED
    Depositing user: Pure Administrator
    Date deposited:16 Dec 2020 16:25
    Last modified:14 Apr 2024 00:54
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/74934
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