Article ID Journal Published Year Pages File Type
510485 Computers & Structures 2013 13 Pages PDF
Abstract

Wind-induced coupled flutter may lead to the collapse of cable-supported bridges. This study investigates several issues, associated with the assessment of bridge flutter. These include: influence of turbulence modeling, simulated by random perturbation to the span-wise correlation length of buffeting loads; effects of errors in the motion-induced or aeroelastic loads. The study makes use of random differential equations and numerically evaluates two-mode flutter by means of stochastic stability beyond mean squares through Moment Lyapunov Exponents. The development and implementation of a numerical algorithm are presented. Results, obtained for two simplified bridge examples, are discussed.

► We study several aspects, related to the analysis of two-mode bridge flutter. ► These are: influence of turbulence and effects of errors in aeroelastic loads. ► Stochastic calculus is used to analyze dynamic bridge stability. ► Stochastic stability and Moment Lyapunov Exponents are used. ► Development and implementation of a new numerical algorithm are presented.

Related Topics
Physical Sciences and Engineering Computer Science Computer Science Applications
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