TITLE:
Flutter Suppression of Long-Span Bridges Using Suboptimal Control
AUTHORS:
Lingjun Zhuo, Yunjin Dong, Xinyu Xu
KEYWORDS:
Aerodynamic Force, Deck-Flap System, Flutter Suppression, Control Law
JOURNAL NAME:
World Journal of Engineering and Technology,
Vol.6 No.2B,
May
22,
2018
ABSTRACT: Based on the Theodorsen’s Theory of the aerodynamic forces on wing-aileron, the Scanlan’s Theory is expanded considering a deck-flap system. It is suggested that a new forced vibration method can acquire aerodynamic derivatives of this deck-flap system theoretically. After obtaining the wind induced forces, a deck-flap equation of motion in time domain is established to investigate its control law. Numerical simulation results indicate suboptimal control law of the deck-flap system can suppress the flutter effectively, and the flutter speed can be increased for desirable purpose.