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Assessment of Numerical Prediction Models for Aeroelastic Instabilities of Bridges

  • The phenomenon of aerodynamic instability caused by the wind is usually a major design criterion for long-span cable-supported bridges. If the wind speed exceeds the critical flutter speed of the bridge, this constitutes an Ultimate Limit State. The prediction of the flutter boundary, therefore, requires accurate and robust models. The complexity and uncertainty of models for such engineeringThe phenomenon of aerodynamic instability caused by the wind is usually a major design criterion for long-span cable-supported bridges. If the wind speed exceeds the critical flutter speed of the bridge, this constitutes an Ultimate Limit State. The prediction of the flutter boundary, therefore, requires accurate and robust models. The complexity and uncertainty of models for such engineering problems demand strategies for model assessment. This study is an attempt to use the concepts of sensitivity and uncertainty analyses to assess the aeroelastic instability prediction models for long-span bridges. The state-of-the-art theory concerning the determination of the flutter stability limit is presented. Since flutter is a coupling of aerodynamic forcing with a structural dynamics problem, different types and classes of structural and aerodynamic models can be combined to study the interaction. Here, both numerical approaches and analytical models are utilised and coupled in different ways to assess the prediction quality of the coupled model.show moreshow less

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Metadaten
Document Type:Doctoral Thesis
Author: Tajammal AbbasGND
DOI (Cite-Link):https://doi.org/10.25643/bauhaus-universitaet.2716Cite-Link
URN (Cite-Link):https://nbn-resolving.org/urn:nbn:de:gbv:wim2-20180515-27161Cite-Link
URL:https://asw-verlage.de/katalog/assessment_of_numerical_prediction_models_for_aeroelastic_instabilities_of_bridges-1897.html
Series (Serial Number):Schriftenreihe des DFG Graduiertenkollegs 1462 Modellqualitäten // Graduiertenkolleg Modellqualitäten <Weimar> (16)
Publisher:Jonas Verlag
Place of publication:Weimar
Referee:Prof. Dr. Yaojun Ge, Prof. Dr. rer. nat. Tom LahmerORCiDGND
Advisor:Prof. Dr. Guido MorgenthalORCiDGND
Language:English
Date of Publication (online):2016/11/30
Year of first Publication:2016
Date of final exam:2016/09/16
Release Date:2018/05/15
Publishing Institution:Bauhaus-Universität Weimar
Granting Institution:Bauhaus-Universität Weimar, Fakultät Bauingenieurwesen
Institutes:Fakultät Bauingenieurwesen / Institut für Strukturmechanik
Pagenumber:275
Tag:Bridges; Flutter; Model assessment; Sensitivity; Uncertainty
GND Keyword:Brücke; Flattern; Unsicherheit
Dewey Decimal Classification:600 Technik, Medizin, angewandte Wissenschaften / 620 Ingenieurwissenschaften / 627 Wasserbau
BKL-Classification:56 Bauwesen / 56.23 Brückenbau
Licence (German):License Logo Creative Commons 4.0 - Namensnennung (CC BY 4.0)