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

Petrov, E P (2011) Analysis of flutter-induced limit cycle oscillations in gas-turbine structures with friction, gap and other nonlinear contact interfaces. In: Structures and Dynamics, Parts A and B. ASME Conference Proceedings, 6 . American Society of Mechanical Engineers, New York, pp. 897-911. ISBN 9780791854662

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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, 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.

Item Type: Book Section
Additional Information: Paper no. GT2011-46188
Schools and Departments: School of Engineering and Informatics > Engineering and Design
Depositing User: Yevgen Petrov
Date Deposited: 17 Jul 2012 07:53
Last Modified: 30 Nov 2012 10:45
URI: http://sro.sussex.ac.uk/id/eprint/29034
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