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. In: ASME Turbo Expo 2015: Turbine Technical Conference and Exposition, 15-19 June, 2015, Montreal, Canada.

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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 or Workshop Item (Paper)
Additional Information: ISBN: 9780791856772
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
Related URLs:
Depositing User: Yevgen Petrov
Date Deposited: 16 May 2016 10:00
Last Modified: 19 Jul 2016 12:21
URI: http://sro.sussex.ac.uk/id/eprint/61010
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