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

Petrov, Yevgen (2016) Analysis of bifurcations in multiharmonic analysis of nonlinear forced vibrations of gas-turbine engine structures with friction and gaps. Journal Of Engineering For Gas Turbines And Power, 138 (10). p. 102502. ISSN 0742-4795

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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: Article
Keywords: bifurcation, nonlinear vibration, friction contacts, dynamics
Schools and Departments: School of Engineering and Informatics > Engineering and Design
Subjects: T Technology > TJ Mechanical engineering and machinery > TJ0170 Mechanics applied to machinery. Dynamics
Depositing User: Yevgen Petrov
Date Deposited: 16 May 2016 09:48
Last Modified: 16 May 2016 09:48
URI: http://sro.sussex.ac.uk/id/eprint/61013
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