Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Hysteresis phenomena in transverse galloping of triangular cross-section bodies
Year:2012
Research Areas
  • Mechanical aeronautics and naval engineering
Information
Abstract
Transversegallopingisatypeofaeroelasticinstabilitycharacterisedbylargeamplitude, low frequencyoscillationofastructureinthedirectionnormaltothemeanwind direction.Itnormallyappearsinbodieswithsmallstiffnessandstructuraldamping, providedtheincidentflowvelocityishighenough.Inthesimplestapproachtransverse gallopingcanbeconsideredasaone-degree-of-freedomoscillatorsubjectedto aerodynamicforces,whichinturncanbedescribedbyusingaquasi-steadydescription. In thisframeithasbeendemonstratedthathysteresisphenomenaintransverse gallopingisrelatedtotheexistenceofinflectionpointsinthecurvegivingthe dependencewiththeangleofattackoftheaerodynamiccoefficientnormaltothe incidentflow.Aimingatexperimentallycheckingsucharelationshipbetweenthese inflectionpointsandhysteresis,windtunnelexperimentshavebeenconducted. Experimentshavebeenrestrictedtoisoscelestriangularcross-sectionbodies,whose gallopingbehaviouriswelldocumented.Experimentalresultsshowthat,accordingto theoreticalpredictions,hysteresistakesplaceattheanglesofattackwherethereare inflectionpointsintheliftcoefficientcurve,providedthatthebodyispronetogallopat these anglesofattack.
International
Si
JCR
Si
Title
Journal of Fluids And Structures
ISBN
0889-9746
Impact factor JCR
1,567
Impact info
Volume
33
10.1016/j.jfluidstructs.2012.04.008
Journal number
From page
243
To page
251
Month
MAYO
Ranking
Participants
  • Autor: Gustavo Alonso Rodrigo (UPM)
  • Autor: Alfredo Sanz Lobera (UPM)
  • Autor: Jose Meseguer Ruiz (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Desarrollo y Ensayos Aeroespaciales
  • Centro o Instituto I+D+i: Instituto Universitario de Microgravedad "Ignacio da Riva"
  • Departamento: Materiales y Producción Aeroespacial
  • Departamento: Vehículos Aeroespaciales
  • Departamento: Infraestructura, Sistemas Aeroespaciales y Aeropuertos
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)