Suppression of Bridge Flutter by Active Deck-Flaps Control System
Publication: Journal of Engineering Mechanics
Volume 127, Issue 1
Abstract
A theoretical study on an aerodynamic control method for suppression of the wind-induced instabilities of a very long span bridge is presented in this paper. The control system consists of additional control flaps attached to the edges of the bridge deck. Their rotational movement, commanded via feedback control law, is used to modify the aerodynamic forces acting on the deck and provides aerodynamic forces on the flaps used to stabilize the bridge. A time domain formulation of self-excited and buffeting forces is obtained through the rational function approximation of the generalized Theodorsen function. The optimal configuration of the deck-flaps system is found with respect to the performance index based on stability robustness of the system. A control system with the rotational center of the flaps that is located on the edges of the deck was found to be the most effective. It is also shown that this control system can provide sufficient aerodynamic damping and satisfactory stability robustness of the system with a relatively small flap size for the considered range of wind speed.
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References
1.
Branceleoni, F. ( 1992). “The construction phase and its aerodynamic issues.” Aerodynamics of large bridges, A. Larsen, ed., Balkema, Rotterdam, The Netherlands, 147–158.
2.
Dowell, E. H., Curtiss, H. C., Scanlan, R. H., and Sisto, F. ( 1978). A modern course in aeroelasticity, Sijthoff & Noordhoff, Alphen aan den Rijn, Holland.
3.
Doyle, S. J., and Stein, G. ( 1981). “Multivariable feedback design: concepts for a classical/modern synthesis.” IEEE Trans. Automatic Control, 26(1), 4–16.
4.
Dunn, H. ( 1980). “An analytical technique for approximating unsteady aerodynamics in the time domain.” NASA TP-1738, National Aeronautics and Space Administration, Washington, D.C.
5.
Edwards, J. W. ( 1977). “Unsteady aerodynamic modeling for artibrary motions.” AIAA J., 15(1), 593–595.
6.
Karpel, M. ( 1981). “Design for active and passive flutter suppression and gust alleviation.” NASA CR-3482, National Aeronautics and Space Administration, Washington, D.C.
7.
Kobayashi, H., and Nagaoka, H. ( 1992). “Active control of flutter of a suspension bridge.” J. Wind Engrg. and Ind. Aerodyn., 41–44, 143–151.
8.
Kobayashi, H., Ogawa, R., and Taniguchi, S. ( 1998). “Active flutter control of a bridge deck by ailerons.” Proc., 2nd World Conf. on Struct. Control, T. Kobori et al., eds., Kyoto, Japan, 3, 1841–1848.
9.
Nissim, E. ( 1971). “Flutter suppression using active controls based on the concept of aerodynamic energy.” NASA TN D-6199, National Aeronautics and Space Administration, Washington, D.C.
10.
Nissim, E. ( 1977). “Recent advantages in aerodynamics energy concept for flutter suppression and gust alleviation using active controls.” NASA TN D-8519, National Aeronautics and Space Administration, Washington, D.C.
11.
Nobuto, J., Fujino, Y., and Ito, M. ( 1988). “A study on the effectiveness of TMD to suppress a coupled flutter of bridge deck.” J. Struct. Mech. and Earthquake Engrg., Tokyo, 398(10), 413–416 (in Japanese).
12.
Ostenfeld, K., and Larsen, A. ( 1992). “Bridge engineering and aerodynamics.” Aerodynamics of large bridges, A. Larsen, ed., Balkema, Rotterdam, The Netherlands, 3–22.
13.
Roberts, G. ( 1966). “The Severn Bridge: a new principle in design.” Proc., Int. Symp. on Suspension Bridges, Laboratorio Nacional de Engenharia Civil, Lisbon, 629–639.
14.
Roger, K. ( 1977). “Airplane math modeling methods for active control design.” AGARD-CP-228, Advisory Group for Aerospace Research and Development, Washington, D.C.
15.
Sanford, M. C., Abel, I., and Gray, D. L. ( 1975). “Development and demonstration of a flutter-suppression system using active controls.” NASA TR R-450, National Aeronautics and Space Administration, Washington, D.C.
16.
Sato, H., Kitagawa, M., Katsuchi, H., Tanaka, H., and Hatanaka, A. (1996). “Buffeting response analysis of the aeroelastic 3D-model of cable stayed bridge considering the wind characteristics of the surrounding topography.”J. Struct. Engrg., Tokyo, 23, 023A, 855–866 (in Japanese).
17.
Simiu, E., and Scanlan, R. H. ( 1986). Wind effects on structures, Wiley, New York.
18.
Theodorsen, T. ( 1935). “General theory of aerodynamic instability and the mechanism of flutter.” NACA Rep. 496, National Advisory Committee for Aeronautics, Washington, D.C.
19.
Theodorsen, T., and Garrick, I. E. ( 1943). “Nonstationary flow about a wing-aileron-tab combination including aerodynamic balance.” NACA Rep. 736, National Advisory Committee for Aeronautics, Washington, D.C.
20.
Tiffany, S., and Adams, W. ( 1988). “Nonlinear programming extensions to rational function approximation methods for unsteady aerodynamic forces.” NASA TP-2826, National Aeronautics and Space Administration, Washington, D.C.
21.
Wilde, K., and Fujino, Y. (1998). “Aerodynamic control of bridge deck flutter by active surfaces.”J. Engrg. Mech., ASCE, 124(7), 718–727.
22.
Wilde, K., Fujino, Y., and Masukawa, J. (1996a). “Time domain modeling of bridge deck flutter.”J. Struct. Engrg./Earthquake Engrg., Tokyo, 13, 93s–104s.
23.
Wilde, K., Fujino, Y., and Prabis, V. ( 1996b). “Effects of eccentric mass on flutter of long span bridge.” Proc., 2nd Int. Workshop on Struct. Control, Hong Kong, 564–574.
Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 127 • Issue 1 • January 2001
Pages: 80 - 89
History
Received: Aug 19, 1998
Published online: Jan 1, 2001
Published in print: Jan 2001
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