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http://dx.doi.org/10.5050/KSNVN.2009.19.6.575

Extraction of Bridge Flutter Derivatives by a Forced Excitation  

Lee, Seung-Ho (전북대학교 토목공학과)
Kwon, Soon-Duck (전북대학교 토목공학과)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.19, no.6, 2009 , pp. 575-582 More about this Journal
Abstract
This study presents the vibration excitation system to extract the aerodynamic stability derivatives which is generally called as flutter derivatives in civil engineering. The system consists of the excitation part to give a forced harmonic motion to the model and the sensing part to measure the aerodynamic forces as well as inertia forces acting on a bridge model. A data processing algorithm for extracting the flutter derivatives from the measured forces is also presented. From the wind tunnel tests, verification of present system was done by comparing the measured and analytical results for rectangular shaped model. The effects of excitation frequencies and amplitudes on flutter derivatives are discussed. Five kinds of actual bridge model were presented from the wind tunnel.
Keywords
Flutter Derivative; Forced Excitation; Bridge Vibration;
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Times Cited By KSCI : 1  (Citation Analysis)
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