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Analysis of flutter-induced limit cycle oscillations in gas-turbine structures with friction, gap and other nonlinear contact interfaces

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posted on 2023-06-08, 08:27 authored by Yevgen PetrovYevgen Petrov
A frequency-domain method has been developed to predict and comprehensively analyse the limit-cycle flutter-induced vibrations in bladed discs and other structures with nonlinear contact interfaces. The method allows, for the first time, direct calculation of the limit-cycle amplitudes and frequencies as functions of contact interface parameters and aerodynamic characteristics using realistic large-scale finite element models of structures. The effects of the parameters of nonlinear contact interfaces on limit-cycle amplitudes and frequencies have been explored for major types of nonlinearities occurring in gasturbine structures. New mechanisms of limiting the flutter-induced vibrations have been revealed and explained.

History

Publication status

  • Published

Publisher

American Society of Mechanical Engineers

Volume

6

Page range

897-911

Book title

Structures and Dynamics, Parts A and B

Place of publication

New York

ISBN

9780791854662

Series

ASME Conference Proceedings

Department affiliated with

  • Engineering and Design Publications

Notes

Paper no. GT2011-46188

Full text available

  • No

Peer reviewed?

  • Yes

Legacy Posted Date

2012-07-17

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