Flutter instability prediction techniques for bridge deck sections
Tóm tắt
In order to investigate the fluid/structure interaction of a bridge deck in a cross wind, a two‐dimensional hp/Spectral fluid solver has been modified to incorporate a body undergoing translational and rotational motion. A moving frame of reference is attached to the body to utilize the efficiency of a fixed mesh solver. The critical reduced velocity at which a bridge deck undergoes a two degree of freedom flutter instability is then predicted using various methods: a theoretical linear potential model; quasi‐steady theory; a linear evaluation of applied forces using prescribed motion; and free translational and rotational motion of the structure. These predictions are compared with experimental data and the various merits of each scheme are reported. Copyright © 2003 John Wiley & Sons, Ltd.
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Tài liệu tham khảo
Frandsen JB, 1997, Computational Methods for Fluid Structure Interaction
WaltherJH LarsenA.A two dimensional discrete vortex method for bridge aerodynamics applications. Fourth European Computational Fluid Dynamics Conference Athens Greece 1998.
WaltherJH.Discrete Vortex Method for two‐dimensional flow past bodies of arbitrary shape undergoing prescribed rotary and translatory motion. Ph.D. Thesis The Technical University of Denmark Department of Fluid Mechanics Lyngby Denmark;1994.
Piperno S, 1999, Numerical simulation of wind effects on flexible civil engineering structures. In Revue Européenne des Eléments Finis, Simulation numérique des problémes couplés, 8, 659
Steinman DB, 1957, Bridges and their Builders
ScanlanRH.On the state of stability considerations for suspended‐span bridges under wind. In Proceedings IUTAM‐IAHR Symposium Karlsruhe Germany 1979;595–618.
Scanlan RH, 1971, Airfoil and bridge deck flutter derivatives, Journal of the Engineering Mechanics Division, ASCE, 97, 1717, 10.1061/JMCEA3.0001526
Simiu E, 1996, Wind Effects on Structures
Dyrbye C, 1997, Wind Loads on Structures
TheodorsenT. General theory of aerodynamic instability and the mechanism of flutter.1935; TR 496 NACA.
Blevins RD, 1990, Flow‐induced Vibration
Nakamura Y, 1975, Torsional Flutter of Rectangular Prisms, Journal of Engineering Mechanics Division, American Society of Civil Engineers, 101, 125, 10.1061/JMCEA3.0002001