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

conference contribution
posted on 2023-06-09, 01:14 authored by Yevgen PetrovYevgen Petrov
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.

History

Publication status

  • Published

Journal

ASME. Turbo Expo: Power for Land, Sea, and Air, Volume 7B: Structures and Dynamics

Publisher

American Society of Mechanical Engineers

Volume

7B

Page range

1-12

Event name

ASME Turbo Expo 2015: Turbine Technical Conference and Exposition

Event location

Montreal, Canada

Event type

conference

Event date

15-19 June, 2015

Place of publication

New York

ISBN

9780791856772

Department affiliated with

  • Engineering and Design Publications

Full text available

  • No

Peer reviewed?

  • Yes

Legacy Posted Date

2016-05-16

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