2020-11-24T16:47:38Z
http://oa.upm.es/cgi/oai2
oai:oa.upm.es:39646
2016-03-10T11:34:00Z
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Hysteresis in transverse galloping: the role of the inflection points
Barrero Gil, Antonio
Sanz Andres, Angel Pedro
Alonso Rodrigo, Gustavo
Aeronautics
Transverse galloping is here considered as a one-degree-of-freedom oscillator subjected to aerodynamic forces, which are described by using the quasi-steady hypothesis. The hysteresis of transverse galloping is also analyzed. Approximate solutions of the model are obtained by assuming that the aerodynamic and damping forces are much smaller than the inertial and stiffness ones. The analysis of the approximate solution, which is obtained by means of the method of Krylov–Bogoliubov, reveals the existing link between the hysteresis phenomenon and the number of inflection points at the aerodynamic force coefficient curve, Cy(α)Cy(α); CyCy and αα being, respectively, the force coefficient normal to the incident flow and the angle of attack. The influence of the position of these inflection points on the range of flow velocities in which hysteresis takes place is also analyzed.
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
2009-08
info:eu-repo/semantics/article
Article
Journal of Fluids and Structures, ISSN 0889-9740, 2009-08, Vol. 25, No. 6
PeerReviewed
application/pdf
spa
http://www.sciencedirect.com/science/article/pii/S0889974609000528
info:eu-repo/semantics/openAccess
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jfluidstructs.2009.04.008
http://oa.upm.es/39646/