Hysteresis phenomena in transverse galloping of triangular cross-section bodies

Alonso Rodrigo, Gustavo; Sanz Lobera, Alfredo y Meseguer Ruiz, José (2012). Hysteresis phenomena in transverse galloping of triangular cross-section bodies. "Journal of Fluids And Structures", v. 33 ; pp. 243-251. ISSN 0889-9746. https://doi.org/10.1016/j.jfluidstructs.2012.04.008.

Descripción

Título: Hysteresis phenomena in transverse galloping of triangular cross-section bodies
Autor/es:
  • Alonso Rodrigo, Gustavo
  • Sanz Lobera, Alfredo
  • Meseguer Ruiz, José
Tipo de Documento: Artículo
Título de Revista/Publicación: Journal of Fluids And Structures
Fecha: Agosto 2012
Volumen: 33
Materias:
Palabras Clave Informales: Galloping; Hysteresis
Escuela: E.T.S.I. Aeronáuticos (UPM) [antigua denominación]
Departamento: Infraestructura, Sistemas Aeroespaciales y Aeropuertos [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

Transverse galloping is a type of aeroelastic instability characterised by large amplitude, low frequency oscillation of a structure in the direction normal to the mean wind direction. It normally appears in bodies with small stiffness and structural damping, provided the incident flow velocity is high enough. In the simplest approach transverse galloping can be considered as a one-degree-of-freedom oscillator subjected to aerodynamic forces, which in turn can be described by using a quasi-steady description. In this frame it has been demonstrated that hysteresis phenomena in transverse galloping is related to the existence of inflection points in the curve giving the dependence with the angle of attack of the aerodynamic coefficient normal to the incident flow. Aiming at experimentally checking such a relationship between these inflection points and hysteresis, wind tunnel experiments have been conducted. Experiments have been restricted to isosceles triangular cross-section bodies, whose galloping behaviour is well documented. Experimental results show that, according to theoretical predictions, hysteresis takes place at the angles of attack where there are inflection points in the lift coefficient curve, provided that the body is prone to gallop at these angles of attack.

Más información

ID de Registro: 16141
Identificador DC: http://oa.upm.es/16141/
Identificador OAI: oai:oa.upm.es:16141
Identificador DOI: 10.1016/j.jfluidstructs.2012.04.008
URL Oficial: http://www.sciencedirect.com/science/article/pii/S0889974612000850
Depositado por: Memoria Investigacion
Depositado el: 22 Abr 2014 18:26
Ultima Modificación: 21 Abr 2016 16:28
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