Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
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 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.
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 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.
Assessment of numerical prediction models for aeroelastic instabilities of bridges
Abbas, Tajammal (Autor:in) / Morgenthal, Guido (Gutachter:in) / Ge, Yaojun (Gutachter:in) / Lahmer, Tom (Gutachter:in) / Bauhaus-Universität Weimar (Grad-verleihende Institution)
2017
1 Online-Ressource (275 Seiten)
Illustrationen, Diagramme
Langzeitarchivierung durch Thüringer Universitäts- und Landesbibliothek
Hochschulschrift
Elektronische Ressource
Englisch
Assessment of numerical prediction models for aeroelastic instabilities of bridges
| TIBKAT | 2017
Assessment of Numerical Prediction Models for Aeroelastic Instabilities of Bridges
| BASE | 2016
Prediction of aeroelastic stability of suspension bridges during erection
| Online Contents | 1997
Prediction of aeroelastic stability of suspension bridges during erection
| British Library Conference Proceedings | 1997