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Analysis of flutter-induced limit cycle oscillations in gas-turbine structures with friction, gap, and other nonlinear contact interfaces
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 direct calculation of the limit-cycle amplitudes and frequencies as functions of contact interface parameters 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 gas-turbine structures. New mechanisms of limiting the flutter-induced vibrations have been revealed and explained
History
Publication status
- Published
Journal
Journal of TurbomachineryISSN
0889-504XPublisher
American Society of Mechanical EngineersExternal DOI
Issue
6Volume
134Page range
061018/1-061018/13Department affiliated with
- Engineering and Design Publications
Full text available
- No
Peer reviewed?
- Yes