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

Petrov, E P (2012) Analysis of flutter-induced limit cycle oscillations in gas-turbine structures with friction, gap, and other nonlinear contact interfaces. Journal of Turbomachinery, 134 (6). 061018/1-061018/13. ISSN 0889-504X

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Abstract

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

Item Type: Article
Schools and Departments: School of Engineering and Informatics > Engineering and Design
Subjects: T Technology > TJ Mechanical engineering and machinery
Depositing User: Yevgen Petrov
Date Deposited: 28 Nov 2012 17:05
Last Modified: 13 Mar 2017 10:42
URI: http://sro.sussex.ac.uk/id/eprint/43016

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