Advanced flutter simulation of flexible bridge decks

Szabó, Gergely; Györgyi, József; Kristóf, Gergely

doi:10.12989/csm.2012.1.2.133

Cited by 4 publications

(5 citation statements)

References 7 publications

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“…15. The total logarithmic decrement of damping was determined based on the modal aerodynamic derivatives method proposed by Szabo et al [16]. The bridge deck is given a forced three-dimensional oscillation according to the relevant mode shapes, therefore can be regarded as an equivalent counterpart of the FSI, only in the frequency domain.…”

Section: Resultsmentioning

confidence: 99%

“…The authors have invested a lot in order to exploit the advantages of CFD so as to perform coupled simulations. As a first step, a full aero-elastic wind tunnel model was constructed for validation purposes by Szabo et al [16]. The critical wind speed of coupled flutter was well captured by using an FSI simulation, in which the FLUENT [17] commercial software was utilized.…”

Section: Introductionmentioning

confidence: 99%

“…The classical linear reduced order model worked out in the frequency domain was proposed by Scanlan and Tomko [21]. This widely used section model concept has been developed into a linear aero-elastic model with the introduction of the modal aerodynamic derivatives by Szabo et al [16]. A promising nonlinear reduced order model based on the Volterra-series technique was proposed by Wu and Kareem [22] for vortex shedding problems of bridge decks.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Three-dimensional FSI Simulation by Using a Novel Hybrid Scaling – Application to the Tacoma Narrows Bridge

Szabó¹,

Györgyi

Kristóf

2020

Period. Polytech. Civil Eng.

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In this paper a novel fluid-structure interaction approach for simulating flutter phenomenon is presented. The method is capable of modelling the structural motion and the fluid flow coupling in a fully three-dimensional manner. The key step of the proposed FSI procedure is a hybrid scaling of the physical fields; certain properties of the CFD simulation are scaled, while those of the mechanical system are kept original. This kind of scaling provides a significant speedup, since the number of the costly CFD time steps can be remarkably reduced. The acceptable computational time makes it possible to consider complex engineering problems such as buffeting, vortex shedding or flutter of a bridge deck or a wing of an airplane.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Three-dimensional FSI Simulation by Using a Novel Hybrid Scaling – Application to the Tacoma Narrows Bridge

Szabó¹,

Györgyi

Kristóf

2020

Period. Polytech. Civil Eng.

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“…Additionally, applying the no-slip wall condition at the bridge surface has become a common practice in the study of bridge aerodynamics. Szabo, Gyorgyi and Kristof [63] identified eight flutter derivatives from a 2-DOF system using 2D URANS simulations. The standard k-ε turbulence model was used, although the configuration of the near-wall region was not specified.…”

Section: (1) Forced Vibration Simulationsmentioning

confidence: 99%

Wind-Induced Phenomena in Long-Span Cable-Supported Bridges: A Comparative Review of Wind Tunnel Tests and Computational Fluid Dynamics Modelling

2021

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Engineers, architects, planners and designers must carefully consider the effects of wind in their work. Due to their slender and flexible nature, long-span bridges can often experience vibrations due to the wind, and so the careful analysis of wind effects is paramount. Traditionally, wind tunnel tests have been the preferred method of conducting bridge wind analysis. In recent times, owing to improved computational power, computational fluid dynamics simulations are coming to the fore as viable means of analysing wind effects on bridges. The focus of this paper is on long-span cable-supported bridges. Wind issues in long-span cable-supported bridges can include flutter, vortex-induced vibrations and rain–wind-induced vibrations. This paper presents a state-of-the-art review of research on the use of wind tunnel tests and computational fluid dynamics modelling of these wind issues on long-span bridges.

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“…There is demand from bridge designers, bridge owners, and bridge operators for a CFD methodology that they can use in assessing their existing bridge stock for adverse impacts due to prevailing wind conditions, as well as assessing newly planned bridges [41]. According to Zhang et al [42], many publications that present analysis of wind effects on bridges using CFD have provided descriptions of their methodology in relatively little detail and rather choose to focus on analyses of the results [43][44][45]. Most currently available online guidance does not consider the unique application of wind effects on long-span bridges.…”

Section: Introductionmentioning

confidence: 99%

Analyzing Wind Effects on Long-Span Bridges: A Viable Numerical Modelling Methodology Using OpenFOAM for Industrial Applications

Zhang,

MacReamoinn,

Cardiff

et al. 2023

Infrastructures

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Aerodynamic performance is of critical importance to the design of long-span bridges. Computational fluid dynamics (CFD) modelling offers bridge designers an opportunity to investigate aerodynamic performance for long-span bridges during the design phase as well as during operation of the bridge. It offers distinct advantages when compared with the current standard practice of wind tunnel testing, which can have several limitations. The proposed revisions to the Eurocodes offer CFD as a methodology for wind analysis of bridges. Practicing engineers have long sought a computationally affordable, viable, and robust framework for industrial applications of using CFD to examine wind effects on long-span bridges. To address this gap in the literature and guidance, this paper explicitly presents a framework and demonstrates a workflow of analyzing wind effects on long-span bridges using open-source software, namely FreeCAD, OpenFOAM, and ParaView. Example cases are presented, and detailed configurations and general guidance are discussed during each step. A summary is provided of the validation of this methodology with field data collected from the structural health monitoring (SHM) systems of two long-span bridges.

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Advanced flutter simulation of flexible bridge decks

Cited by 4 publications

References 7 publications

Three-dimensional FSI Simulation by Using a Novel Hybrid Scaling – Application to the Tacoma Narrows Bridge

Three-dimensional FSI Simulation by Using a Novel Hybrid Scaling – Application to the Tacoma Narrows Bridge

Wind-Induced Phenomena in Long-Span Cable-Supported Bridges: A Comparative Review of Wind Tunnel Tests and Computational Fluid Dynamics Modelling

Analyzing Wind Effects on Long-Span Bridges: A Viable Numerical Modelling Methodology Using OpenFOAM for Industrial Applications

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