Galloping instabilities of two-dimensional triangular cross-section bodies

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 a...

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Published in:Experiments in fluids 2005-06, Vol.38 (6), p.789-795
Main Authors: ALONSO, G, MESEGUER, J, PEREZ-GRANDE, I
Format: Article
Language:English
Subjects:
Aerodynamics
Angle of attack
Applied fluid mechanics
Cross sections
Damping
Exact sciences and technology
Fluid dynamics
Fundamental areas of phenomenology (including applications)
Galloping
Instability
Oscillations
Physics
Solid mechanics
Stability
Structural and continuum mechanics
Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...)
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description 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 degree . The results have been summarized in a stability map, where galloping instability zones in the angle of attackamain vertex angle planeaare identified.
doi_str_mv 10.1007/s00348-005-0974-8
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source Springer Nature
subjects Aerodynamics
Angle of attack
Applied fluid mechanics
Cross sections
Damping
Exact sciences and technology
Fluid dynamics
Fundamental areas of phenomenology (including applications)
Galloping
Instability
Oscillations
Physics
Solid mechanics
Stability
Structural and continuum mechanics
Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...)
title Galloping instabilities of two-dimensional triangular cross-section bodies
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