Understanding the Underlying Physics of Multimode Coupled Bridge Flutter Based on Closed-Form Solutions
نویسندگان
چکیده
This study presents a framework with closed-form solutions for the bimodal coupled bridge aerolastic system, and points out the control parameters which critically influence the generation of inter-modal coupling and aerodynamic damping. Accordingly, this information helps in developing a guideline for the selection of most important structural modes in a coupled flutter analysis. The role of each flutter derivative and the potential influence of the self-excited drag force on bridge flutter are also discussed. Finally, a closed-form formula for quantifying the critical flutter speed is introduced which can be regarded as an extension of the empirical Selberg’s formula for generic bridges.
منابع مشابه
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