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Identification of the essential features of the transient amplification of mistuned systems
Carassale, Luigi; Denoël, Vincent; Martel, Carlos et al.
2020In Proceedings of the ASME 2020 Turbo Expo Conference
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Abstract :
[en] The dynamic behavior of bladed disks in resonance crossing has been intensively investigated in the community of turbomachinery, addressing the attention to (1) the transienttype response that appear when the resonance is crossed with a finite sweep rate and (2) the localization of the vibration in the disk due to the blade mistuning. In real conditions, the two mentioned effects coexist and can interact in a complex manner. This paper investigates the problem by means of analytic solutions obtained through asymptotic expansions, as well as numerical simulations. The mechanical system is assumed as simple as possible: a 2-dof linear system defined through the three parameters: damping ratio , frequency mistuning , rotor acceleration  . The analytic solutions are calculated through the multiple-scale method.
Disciplines :
Engineering, computing & technology: Multidisciplinary, general & others
Author, co-author :
Carassale, Luigi
Denoël, Vincent  ;  Université de Liège - ULiège > Département ArGEnCo > Analyse sous actions aléatoires en génie civil
Martel, Carlos
Panning-von Scheidt, Lars
Language :
English
Title :
Identification of the essential features of the transient amplification of mistuned systems
Publication date :
September 2020
Event name :
ASME Turbo Expo: Turbomachinery Technical Conference & Exhibition
Event organizer :
ASME
Event place :
London, United Kingdom
Event date :
September 2020
Audience :
International
Main work title :
Proceedings of the ASME 2020 Turbo Expo Conference
Peer reviewed :
Peer reviewed
Available on ORBi :
since 28 August 2020

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