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  4. Eccentric-wing flutter stabilizer - Simplified analysis and main findings
 
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Eccentric-wing flutter stabilizer - Simplified analysis and main findings

Publikationstyp
Conference Paper
Date Issued
2019
Sprache
English
Author(s)
Starossek, Uwe 
Institut
Baustatik B-4  
TORE-URI
http://hdl.handle.net/11420/3766
Start Page
2581
End Page
2586
Citation
Congress of IABSE, New York City - The Evolving Metropolis: 2581-2586 (2019)
Contribution to Conference
20th Congress of IABSE, New York City 2019: The Evolving Metropolis  
Scopus ID
2-s2.0-85074454437
A device aiming at preventing bridge flutter is studied. It consists of fixed wings positioned with a large lateral offset along the edges of the bridge deck. The wings are attached to the bridge deck by means of lateral support structures. Flutter analyses for various kinds of bridges and wind-tunnel tests confirm the flutter-suppression effectiveness of the wings. They constitute a passive damping device without moving parts. This is an advantage over devices with moving parts, which meet resistance due to reliability and maintenance concerns. The main findings to date concerning analysis, flutter-suppression effectiveness, and cost-efficiency of the eccentric-wing flutter stabilizer are summarized. In addition, a simplified approach for the analysis of torsional flutter of a bridge equipped with this device is presented and applied to the first Tacoma Narrows Bridge. It is found that with relatively small effort the flutter stability of that bridge could have been substantially improved.
Subjects
Bridge
Cost
Design
Fixed wing
Flutter
Passive control
Torsion
Wind-induced vibration
Funding(s)
Flatterstabilisierung weitgespannter Brücken  
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