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Forced response of mistuned bladed discs in gas flow: a comparative study of predictions and full-scale experimental results

journal contribution
posted on 2023-06-08, 10:07 authored by Yevgen PetrovYevgen Petrov, Luca di Mare, Holger Hennings, Robert Elliott
An integrated experimental-numerical study of forced response for a mistuned bladed disk has been performed. A full chain for the predictive forced response analysis has been developed including data exchange between the computational fluid dynamics code and a code for the prediction of the nonlinear forced response for a bladed disk. The experimental measurements are performed at a full-scale single stage test rig with excitation by aerodynamic forces from gas flow. The numerical modeling approaches and the test rig setup are discussed. Comparison of experimentally measured and predicted values of blade resonance frequencies and response levels for a mistuned bladed disk without dampers is performed. A good correspondence between frequencies at which individual blades have maximum response levels is achieved. The effects of structural damping and underplatform damper parameters on amplitudes and resonance frequencies of the bladed disk are explored. It is shown that the underplatform damper significantly reduces scatters in values of the individual blade frequencies and maximum forced response levels.

History

Publication status

  • Published

Journal

Journal of Engineering for Gas Turbines and Power

ISSN

0742-4795

Publisher

American Society of Mechanical Engineers

Issue

5

Volume

132

Page range

052504/1 - 052504/10

Department affiliated with

  • Engineering and Design Publications

Notes

This paper has been selected by the Structures & Dynamics Committee as a Best Paper award winner from ASME Turbo Expo Congress and Exhibition, 2009.

Full text available

  • No

Peer reviewed?

  • Yes

Legacy Posted Date

2012-02-06

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