[en] Design against flutter is an important task when designing a flexible structure.
Spectral flutter analysis necessitates the integrations of displacement power spectral densities for
evaluating the covariance matrix of responses. This paper presents a light semi-analytical
alternative to classical quadrature methods to integrate PSDs efficiently, decreasing the number of
integration point by one or two orders of magnitude. It is based on a multiple timescale spectral
analysis (MTSA), and constitutes the extension of the background/resonant decomposition of
Davenport to aeroelastic systems. This approach is restricted to modal analysis, and assumes small
damping ratios as well as low modal coupling but possibly highly correlated modes.
Disciplines :
Civil engineering
Author, co-author :
Heremans, Julien ; Université de Liège - ULiège > Département ArGEnCo > Analyse sous actions aléatoires en génie civil
Denoël, Vincent ; Université de Liège - ULiège > Urban and Environmental Engineering ; Université de Liège - ULiège > Département ArGEnCo > Analyse sous actions aléatoires en génie civil
Language :
English
Title :
Background/resonant decomposition of modal response correlations of coupled aeroelastic models submitted to buffeting loads
Alternative titles :
[fr] Décomposition background/résonante des corrélations des réponses modales de systèmes aeroélastiques soumis aux forces turbulentes
Publication date :
2022
Event name :
8th European African Conference on Wind Engineering
Event place :
Bucharest, Romania
Event date :
20 September 2022
Audience :
International
Main work title :
Proceedings of the 8th European-African Conference on Wind Engineering
Publisher :
UTCB Press
Peer reviewed :
Peer reviewed
Funders :
FRIA - Fonds pour la Formation à la Recherche dans l'Industrie et dans l'Agriculture [BE]
