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Study of the aerodynamic damping of wing plates on traffic signal structures based on the 2D one-way FSI analysis

Study of the aerodynamic damping of wing plates on traffic signal structures based on the 2D... To improve the fatigue performance of these traffic signs, luminaries and signals structures, the wing plate, a type of aerodynamic damper, is adopted to control the dynamic responses due to wind-induced fatigue load. In this study, one-way 2D fluid-structure interaction (FSI) analysis is conducted to investigate the mitigation ability of the wing plate. Parametric study is involved to investigate the influence on the damping effect caused by the different configuration of the wing plate, as well as the wind speed. The different configurations of signals and signs applied in Maryland, USA, have been studied to find the potential aerodynamic instability due to galloping. The required length of wing plate for the 23-m mast-arm signal structure in Maryland have been analyzed. The study shows that small space between the wing plate and the arm will reduce the mitigation ability. Wing plate may lose mitigation ability due to stalling. Large vortex shedding is observed in the FSI analysis. The wing plate with dimension 610 mm × 610 mm applied by PennDOT can effectively prevent galloping for signal pole structures in Maryland. This research can be used as a reference for the selection of mitigation devices to satisfy the “effective mitigation devices” stated by AASHTO. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Structural Integrity and Maintenance Taylor & Francis

Study of the aerodynamic damping of wing plates on traffic signal structures based on the 2D one-way FSI analysis

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Study of the aerodynamic damping of wing plates on traffic signal structures based on the 2D one-way FSI analysis

Abstract

To improve the fatigue performance of these traffic signs, luminaries and signals structures, the wing plate, a type of aerodynamic damper, is adopted to control the dynamic responses due to wind-induced fatigue load. In this study, one-way 2D fluid-structure interaction (FSI) analysis is conducted to investigate the mitigation ability of the wing plate. Parametric study is involved to investigate the influence on the damping effect caused by the different configuration of the wing plate, as...
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Publisher
Taylor & Francis
Copyright
© 2021 Korea Institute for Structural Maintenance and Inspection
ISSN
2470-5322
eISSN
2470-5314
DOI
10.1080/24705314.2021.1902662
Publisher site
See Article on Publisher Site

Abstract

To improve the fatigue performance of these traffic signs, luminaries and signals structures, the wing plate, a type of aerodynamic damper, is adopted to control the dynamic responses due to wind-induced fatigue load. In this study, one-way 2D fluid-structure interaction (FSI) analysis is conducted to investigate the mitigation ability of the wing plate. Parametric study is involved to investigate the influence on the damping effect caused by the different configuration of the wing plate, as well as the wind speed. The different configurations of signals and signs applied in Maryland, USA, have been studied to find the potential aerodynamic instability due to galloping. The required length of wing plate for the 23-m mast-arm signal structure in Maryland have been analyzed. The study shows that small space between the wing plate and the arm will reduce the mitigation ability. Wing plate may lose mitigation ability due to stalling. Large vortex shedding is observed in the FSI analysis. The wing plate with dimension 610 mm × 610 mm applied by PennDOT can effectively prevent galloping for signal pole structures in Maryland. This research can be used as a reference for the selection of mitigation devices to satisfy the “effective mitigation devices” stated by AASHTO.

Journal

Journal of Structural Integrity and Maintenance – Taylor & Francis

Published: Oct 2, 2021

Keywords: Mast-arm traffic signal structures; wind-induced fatigue load; galloping; wing plate; aerodynamic damping; CFD simulation; fluid-structure interaction (FSI)

References

  • Turbulence model selection for low Reynolds number flows
  • RANS predictions of turbulent flow past a circular cylinder over the critical regime
  • Full-scale experiments of cantilever traffic signal structures
  • Wind tunnel studies of cantilever traffic signal structures
  • Fatigue-resistant design of cantilevered signal, sign, and light supports
  • Field tests and analytical studies of the dynamic behavior and the onset of galloping in traffic signal structures
  • Unsteady high-lift mechanisms from heaving flat plate simulations
  • Fatigue resistant design criteria for MD SHA cantilever arm signal structures
  • Increased damping in cantilevered traffic signal structures
  • Application of SST k-ω transition model to flow past smooth and rough airfoils
  • Fatigue-resistant design of cantilevered signal, sign and light supports
  • Comparative assessment of PANS and DES for simulation of flow past a circular cylinder
  • Wind load effects on signals, luminaires and traffic signal structures
  • Damping in cantilevered traffic signal structures under forced vibration
  • A correlation based transition model using local variables part 1- model formulation
  • Misconceptions and generalizations of the den hartog galloping criterion
  • Traffic standards (TC-8800 series) signals
  • On the reliability of eddy viscosity based turbulence models in predicting turbulent flow past a circular cylinder using urans approach
  • Passive vibration mitigation for highway sign trusses susceptible to wind-induced vibrations
  • Full-scale investigation of wind-induced vibrations of a mast-arm traffic signal structure
  • A study on vortex shedding from spheres in uniform flow
  • Wind-induced traffic signal structure response: Experiments and reduction via helical arm strakes
  • Neuere feststellungen iiber die gesetze des fliissigkeits- und luftwiderstands
  • NOAA-national centers for environmental information-comparative climate data
  • Wind-induced vibration of a traffic-signal-support structure with cantilevered tapered circular mast arm