Flutter derivatives from free decay tests of a rectangular B/D=10 section estimated by optimized system identification methods
Sign Up to like & getrecommendations! Published in 2018 at "Engineering Structures"
DOI: 10.1016/j.engstruct.2017.11.059
Abstract: Abstract The present paper suggests a hybrid system identification method to estimate the flutter derivatives from coupled free vibration tests. An optimized covariance-based method is used as the initial guess in the modified unifying least… read more here.
Keywords: flutter derivatives; system identification; section; rectangular section ... See more keywords
Free vibration numerical simulation technique for extracting flutter derivatives of bridge decks
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Wind Engineering and Industrial Aerodynamics"
DOI: 10.1016/j.jweia.2017.08.018
Abstract: Abstract A numerical simulation technique based on computational fluid dynamics (CFD) for determining the time-varying histories of free vibration displacements, velocities, and aerodynamic forces of bridge decks is presented. The weak coupling method is used… read more here.
Keywords: flutter derivatives; numerical simulation; vibration; simulation technique ... See more keywords
Bayesian spectral density approach for identification of bridge section’s flutter derivatives operated in turbulent flow
Sign Up to like & getrecommendations! Published in 2022 at "Mechanical Systems and Signal Processing"
DOI: 10.1016/j.ymssp.2021.108782
Abstract: This study presents a Bayesian spectral density approach for identification and uncertainty quantification of flutter derivatives of bridge sections utilizing buffeting displacement responses, where thewind tunnel test is conducted in turbulent flow. Different from traditional… read more here.
Keywords: spectral density; bayesian spectral; approach; flutter derivatives ... See more keywords
Limitations of the flutter derivative model
Sign Up to like & getrecommendations! Published in 2018 at "Advances in Structural Engineering"
DOI: 10.1177/1369433218814025
Abstract: Flutter derivatives identified from transient (free-decay) vibrations might not be suitable for the analysis of bridge flutter. The application of transient flutter derivatives in the flutter analysis relies on two assumptions: (1) transient flutter derivatives… read more here.
Keywords: flutter derivatives; state; vibration; model ... See more keywords
Computational Fluid Dynamics Based Kriging Prediction on Flutter Derivatives of Flat Steel Box Girders
Sign Up to like & getrecommendations! Published in 2022 at "Symmetry"
DOI: 10.3390/sym14071304
Abstract: An investigation on the flutter derivative prediction of flat steel box girders is carried out based on CFD simulations. Firstly, by taking the flat steel girder section of Qingshan Yangtze River Bridge as the basic… read more here.
Keywords: section; steel; steel box; flutter derivatives ... See more keywords