Analysis of bifurcations in multiharmonic analysis of nonlinear forced vibrations of gas-turbine engine structures with friction and gaps

Petrov, E P (2015) Analysis of bifurcations in multiharmonic analysis of nonlinear forced vibrations of gas-turbine engine structures with friction and gaps. ASME Turbo Expo 2015: Turbine Technical Conference and Exposition, Montreal, Canada, 15-19 June, 2015. Published in: ASME. Turbo Expo: Power for Land, Sea, and Air, Volume 7B: Structures and Dynamics. 7B V07BT33A006. American Society of Mechanical Engineers ISBN 9780791856772

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Abstract

An efficient frequency-domain method has been developed to analyse the forced response of large-scale nonlinear gas-turbine structures with bifurcations. The method allows: detection and localization of the design and operating conditions sets where bifurcations occur; calculation of tangents to the solution trajectory and continuation of solutions under parameter variation for structures with bifurcations.
The method is aimed at calculation of steady-state periodic solution and multiharmonic representation of the variation of displacements in time is used. The possibility of bifurcations in realistic gas-turbine structures with friction contacts and with cubic nonlinearity has been shown.

Item Type: Conference Proceedings
Keywords: friction; engines; gas turbines; vibration; bifurcation
Schools and Departments: School of Engineering and Informatics > Engineering and Design
Subjects: T Technology > TJ Mechanical engineering and machinery
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Depositing User: Yevgen Petrov
Date Deposited: 16 May 2016 10:00
Last Modified: 19 Jun 2018 15:00
URI: http://sro.sussex.ac.uk/id/eprint/61010
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