{"id":839,"date":"2026-03-08T00:52:56","date_gmt":"2026-03-07T16:52:56","guid":{"rendered":"https:\/\/iweb20wp-b205b.url.tku.edu.tw\/jase\/?post_type=tkuisotope&p=839"},"modified":"2026-03-18T14:31:55","modified_gmt":"2026-03-18T06:31:55","slug":"optimal-passive-aerodynamic-control-design-for-mitigating-flutter-in-long-span-bridges","status":"publish","type":"tkuisotope","link":"\/jase\/?tkuisotope=optimal-passive-aerodynamic-control-design-for-mitigating-flutter-in-long-span-bridges","title":{"rendered":"Optimal Passive Aerodynamic Control Design for Mitigating Flutter in Long-Span Bridges"},"content":{"rendered":"\n
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<\/i> 2026<\/a><\/p>\n<\/div>\n\n\n\n

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<\/i> Volume 30<\/a><\/p>\n<\/div>\n\n\n\n

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Hong-Son Nguyen1<\/sup>, Van-Quyen Nguyen2<\/sup>, Ngoc-An Tran3<\/sup>, Phan-Anh Nguyen3<\/sup><\/i><\/a>, and Ngoc-Dung Bui4<\/sup><\/p>\n\n\n\n

1<\/sup>HaUI Institute of Technology, Hanoi University of Industry, Hanoi, Vietnam<\/p>\n\n\n\n

2<\/sup>Department of Mechatronics, School of Mechanical Engineering, Hanoi University of Science and Technology, Hanoi, Vietnam<\/p>\n\n\n\n

3<\/sup>Faculty of Civil Engineering, Vietnam Maritime University, Haiphong City, Vietnam<\/p>\n\n\n\n

4<\/sup>Faculty of Technology and Engineering, Hai Phong University, Haiphong City, Vietnam<\/p>\n<\/div>\n\n\n\n

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Received:\u00a0July 29, 2025
Accepted:\u00a0November 6, 2025
Publication Date:\u00a0March 8, 2026<\/p>\n<\/div>\n<\/div>\n\n\n\n

\"\u4e0a\u50b3\u5716\u7247\"\n\n\n

Hinged attachment of a wing with torsional spring on one side of the bridge deck.<\/p>\n<\/div>\n<\/div>\n\n\n\n

<\/i> Copyright <\/strong>The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0)<\/a>, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.<\/p>\n\n\n\n

Download Citation:\u00a0 RIS<\/a> | BibTeX <\/a>| http:\/\/dx.doi.org\/10.6180\/jase.202607_30.009<\/a>\u00a0\u00a0<\/p>\n\n\n\n

Download PDF<\/a><\/p>\n\n\n\n

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A wide range of studies have focused on improving the aerodynamic stability of long-span bridges by raising their critical flutter wind speed. There are two main approaches to enhancing aerodynamic stability: mechanical and aerodynamic methods. The aerodynamic approach suppresses vibrations not by dissipating energy, but by generating additional aerodynamic forces induced through the installation of thin plates. However, the optimization process in the case of passive control is highly complex, as it involves not only the forces generated by wind interaction with the deck structure but also those acting on attached thin plates. This paper proposes an optimization algorithm that simplifies the determination of optimal parameters for wings used in passive aerodynamic control. Based on the complex eigenvalue method, the optimization process is implemented using the Genetic Algorithm (GA) function available in MATLAB. In addition, this paper also reviews several previously proposed passive aerodynamic control strategies and, based on that, introduces a novel configuration: a wing mounted to one side of the deck using a hinged connection and a torsional spring. Numerical simulation results demonstrate that the newly proposed configuration outperforms previous approaches in all investigated scenarios.<\/p>\n\n\n\n

Keywords:\u00a0Flutter; bridge deck; passive aerodynamic control; complex eigenvalue method; Genetic Algorithm<\/em><\/p>\n\n\n\n

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