Reference : Empirical modelling of the bifurcation behaviour of a bridge deck undergoing across-w...
Scientific journals : Article
Engineering, computing & technology : Aerospace & aeronautics engineering
Engineering, computing & technology : Civil engineering
http://hdl.handle.net/2268/172925
Empirical modelling of the bifurcation behaviour of a bridge deck undergoing across-wind galloping
English
Andrianne, Thomas mailto [Université de Liège - ULiège > Département d'aérospatiale et mécanique > Interactions Fluide-Structure - Aérodynamique expérimentale >]
Dimitriadis, Grigorios mailto [Université de Liège - ULiège > Département d'aérospatiale et mécanique > Interactions Fluide-Structure - Aérodynamique expérimentale >]
Dec-2014
Journal of Wind Engineering and Industrial Aerodynamics
Elsevier Science
135
129-135
Yes (verified by ORBi)
International
0167-6105
1872-8197
[en] wind tunnel ; galloping ; modelling
[en] This work presents an empirical model capable to describe the galloping bifurcation behaviour of a bridge deck. It is based on a general polynomial form proposed by Novak, which we limit to the 5th order. The advantage of choosing this function for modelling the vertical force coefficient is that asymmetry of the even terms is enforced in order to reproduce the sub-critical aeroelastic behaviour of the bridge deck. The coefficients of the polynomial are identified from several pairs of displacement amplitudes and the corresponding airspeeds, measured in a wind tunnel during dynamic tests on the sectional bridge model. The identification is carried out using a first order harmonic balance technique. A stability analysis is presented in order to highlight the need of such a model to catch the complete bifurcation behaviour of the system. The resulting force coefficient of this full order model is compared to the well known models of Parkinson and Novak. Finally, the concept universal curve is used in order to discuss the galloping responses of square and rectangular cylinders, in comparison with the one of the bridge deck.
Soufflerie Aérodynamique ; Interactions Fluide-Structure - Aérodynamique expérimentale
Researchers ; Professionals
http://hdl.handle.net/2268/172925

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Restricted access
JWEIA_Andrianne_Oct2014.pdfAuthor preprint437.3 kBRequest copy

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.