Skip to main content

Advertisement

SpringerLink
Log in

Galloping instabilities of two-dimensional triangular cross-section bodies

  • Originals
  • Published:
Experiments in Fluids Aims and scope Submit manuscript

Abstract

Galloping is a type of aeroelastic instability characterized by large amplitude, low frequency, normal to wind oscillations. It normally appears in bodies with small stiffness and structural damping when they are placed in a flow and the incident velocity is high enough. In this paper a systematic approach for the analysis of galloping of triangular cross-section bodies is reported. Wind tunnel experiments have been conducted aiming at establishing the unstable characteristics of isosceles triangular cross-section bodies when subjected to a uniform flow with angles of attack ranging from 0 to 180°. The results have been summarized in a stability map, where galloping instability zones in the angle of attack—main vertex angle plane—are identified.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8

Similar content being viewed by others

References

  • Alonso G, Meseguer J (2005) A parametric study of the galloping stability of triangular cross-section bodies. J Wind Eng Ind Aerodyn (submitted)

  • Chabart O, Lilien JL (1998) Galloping of electrical lines in wind tunnel facilities. J Wind Eng Ind Aerodyn 74–76:967–976

    Article  Google Scholar 

  • Courchesne J, Laneville A (1982) An experimental evaluation of drag coefficient of rectangular cylinders exposed to grid turbulence. J Fluid Eng 104:523–528

    Google Scholar 

  • Hémon P, Santi F (2002) On the aeroelastic behaviour of rectangular cylinders in cross-flow. J Fluid Struct 16:855–889

    Article  Google Scholar 

  • Hémon P, Santi F, Schnoerringer B, Wojciechowski J (2001) Influence of free stream turbulence on the movement-induced vibrations of an elongated rectangular cylinder in cross flow. J Wind Eng Ind Aerodyn 89:1383–1395

    Article  Google Scholar 

  • Kawai H (1998) Effect of corner modifications on aeroelastic instabilities of tall buildings. J Wind Eng Ind Aerodyn 74–76:719–729

    Article  Google Scholar 

  • Kazakewich MI, Vasilenko AG (1996) Closed analytical solution for galloping aeroelastic self-oscillations. J Wind Eng Ind Aerodyn 65:353–360

    Article  Google Scholar 

  • Li QS, Fang JQ, Geary AP (1998) Evaluation of 2D coupled galloping oscillations of slender structures. Comput Struct 6:513–523

    Article  Google Scholar 

  • Luo SC, Chew YT, Lee TS, Yazdani MG (1998) Stability to translational galloping vibration of cylinders at different mean angles of attack. J Sound Vib 215:1183–1194

    Article  Google Scholar 

  • Luo SC, Chew YT, Ng YT (2003) Hysteresis phenomenon in the galloping oscillation of a square cylinder. J Fluid Struct 18:103–118

    Article  Google Scholar 

  • McComber P, Paradis A (1998) A cable galloping model for thin ice accretions. Atmos Res 46:13–25

    Article  Google Scholar 

  • Novak M (1969) Aeroelastic galloping of prismatic bodies. J Eng Mech Div Proc ASCE 9:115–142

    Google Scholar 

  • Novak M (1972) Galloping oscillations of prismatic structures. J Eng Mech Div Proc ASCE 98:27–46

    Google Scholar 

  • Parkinson G, Smith J (1964) The square cylinder as an aeroelastic non-linear oscillator. Q J Mech Appl Math 17:225–239

    Google Scholar 

  • Ruecheweyh H, Hortmanns M, Schnakenberg C (1996) Vortex-excited vibrations and galloping of slender elements. J Wind Eng Ind Aerodyn 65:347–352

    Article  Google Scholar 

  • Simiu E, Scanlan RH (1996) Wind effects on structures. Fundamentals and applications to design. Wiley, New York

    Google Scholar 

  • Suzuki M, Tanemoto K, Maeda T (2003) Aerodynamic characteristics of train/vehicles under cross winds. J Wind Eng Ind Aerodyn 91:209–218

    Article  Google Scholar 

  • Tamura T (1999) Reliability on CFD estimations for wind-structure interaction problems. J Wind Eng Ind Aerodyn 81:117–143

    Article  Google Scholar 

  • Tamura T, Itoh Y (1999) Unstable aerodynamic phenomena of a rectangular cylinder with critical section. J Wind Eng Ind Aerodyn 83:121–133

    Article  Google Scholar 

  • Torenbeek E (1976) Synthesis of subsonic airplane design. Delft University Press, Delft

    Google Scholar 

  • Van Oudheusden BW (1994) On the quasi-steady analysis of one-degree-of freedom galloping with combined translational and rotational effects. Nonlinear Dyn 8:435–451

    Google Scholar 

  • Van Oudheusden BW (1996) Aerodynamic stiffness effects in rotational galloping at high wind speeds. J Wind Eng Ind Aerodyn 64:31–46

    Article  Google Scholar 

  • Zdravkovich MM, Carelas E (1997) Aerodynamics of a covered pedestrian bridge of a trapezoidal section. J Wind Eng Ind Aerodyn 66:141–153

    Article  Google Scholar 

  • Ziller C, Ruscheweyh H (1997) A new approach for determining the onset velocity of galloping instability taking into account the nonlinearity of the aerodynamic damping characteristic. J Wind Eng Ind Aerodyn 69–71:303–314

    Article  Google Scholar 

Download references

Acknowledgements

The authors thank J. Fernández, V. Pinilla, J.M. Rey and G. Vidal for their helpful contribution in performing the experiments. The authors also thank the reviewers of this paper for their valuable comments.

Author information

Authors and Affiliations

  1. IDR/UPM, E.T.S.I. Aeronáuticos, Universidad Politécnica de Madrid, 28040, Madrid, Spain

    G. Alonso, J. Meseguer & I. Pérez-Grande

Authors
  1. G. Alonso
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. J. Meseguer
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. I. Pérez-Grande
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to G. Alonso.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Alonso, G., Meseguer, J. & Pérez-Grande, I. Galloping instabilities of two-dimensional triangular cross-section bodies. Exp Fluids 38, 789–795 (2005). https://doi.org/10.1007/s00348-005-0974-8

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s00348-005-0974-8

Keywords

Search

Navigation