Flutter and Buffeting Control of Long-span Suspension Bridge by Passive Flaps: Experiment and Numerical Simulation
نویسندگان
چکیده
منابع مشابه
Multimode coupled flutter and buffeting analysis of long span bridges
In this paper, the equations of structural motion are expressed in time-invariant state-space equations by expressing the frequency dependent self-excited forces in terms of rational functions. Accordingly, the multimode coupled flutter analysis is reduced to evaluate the eigenvalues of a constant matrix at each prescribed wind velocity. This formulation is computationally efficient in comparis...
متن کاملAnalysis of Long Span Bridge Response to Winds: Building Nexus between Flutter and Buffeting
In current bridge aeroelastic analysis frameworks, predictions of flutter instability and buffeting response to wind fluctuations are treated as two separate procedures. The flutter instability is analyzed through the solution of a complex eigenvalue problem, offering information on how the self-excited forces influence bridge dynamics, especially the modal damping, and eventually drive the bri...
متن کاملAeroelastic Investigation of Long Span Suspension Bridge Decks by Numerical CFD and FSI Analyses
CFD (Computational Fluid Dynamics) simulations appear to be strong competitor of the wind tunnel test which required scaled model and it is really expensive and time consuming tool in designing bridges therefore there is a strong claim to replace them with CFD. Analyses carried out for different deck cross sections by secondary development of commercial computational fluid dynamics software ANS...
متن کاملComputer Simulation of Buffeting Responses for Long-span Continuous Rigid-frame Bridge with Over-height Pier
The continuous rigid frame bridges are more sensitive to wind action with the increase of bridge span and pier height. In order to calculate the wind induced buffeting responses, the fluctuating wind field at bridge site are simulated by harmonic synthesis method and the wind loads are also derived based on the simplified quasi-steady theory, the time-history dynamic responses of the bridge are...
متن کاملTime Domain Flutter and Buffeting Response Analysis
A time domain approach for predicting the coupled flutter and buffeting response of long span bridges is presented. The frequency dependent unsteady aerodynamic forces are represented by the convolution integrals involving the aerodynamic impulse function and structural motions or wind fluctuations. The aerodynamic impulse functions are derived from experimentally measured flutter derivatives, ...
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ژورنال
عنوان ژورنال: International Journal of Aeronautical and Space Sciences
سال: 2013
ISSN: 2093-274X
DOI: 10.5139/ijass.2013.14.1.46