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Nonlinear Analysis of PrandtlPlane Joined Wings: Effects of Anisotropy

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dc.affiliation.dptoUC3M. Departamento de Ingeniería Aeroespaciales
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Ingeniería Aeroespaciales
dc.contributor.authorCavallaro, Rauno
dc.contributor.authorDemasi, Luciano
dc.contributor.authorPassariello, Andrea
dc.date.accessioned2022-01-24T11:38:09Z
dc.date.available2022-01-24T11:38:09Z
dc.date.issued2014-04-22
dc.description.abstractStructural geometrical nonlinearities strongly affect the response of joined wings: it has been shown that buckling evaluations using linear methods are unreliable, and only a fully nonlinear stability analysis can safely identify the unstable state. This work focuses on the understanding of the main physical mechanisms driving the wing system's response and the snap-buckling instability. Several counterintuitive effects typical of unconventional nonplanar wing systems are discussed and explained. In particular, an appropriate design of the joint-to-wing connection may reduce the amount of bending moment transferred, and this is shown to eventually improve the stability properties, although at price of a reduced stiffness. It is also demonstrated that the lower-to-upper-wing stiffness ratio and the torsional-bending coupling, due to both the geometrical layout and anisotropy of the composite laminates, present a major impact on the nonlinear response. The findings of this work could provide useful indications to develop effective aeroelastic reduced-order models tailored for airplane configurations experiencing important geometric nonlinearities such as PrandtlPlane, truss-braced and strut-braced wings, and sensorcraft.en
dc.identifier.bibliographicCitationCavallaro, R., Demasi, L and Pasariello, A. (2014). Nonlinear Analysis of PrandtlPlane Joined Wings: Effects of Anisotropy. AIAA Journal, 52(5), 964-98
dc.identifier.doihttps://doi.org/10.2514/1.J052242
dc.identifier.issn0001-1452
dc.identifier.publicationfirstpage964
dc.identifier.publicationissue5
dc.identifier.publicationlastpage980
dc.identifier.publicationtitleAIAA Journal
dc.identifier.publicationvolume52
dc.identifier.urihttps://hdl.handle.net/10016/33945
dc.identifier.uxxiAR/0000029370
dc.language.isoeng
dc.publisherAmerican Institute of Aeronautics and Astronauticsen
dc.rights© 2014 American Institute of Aeronautics and Astronautics
dc.rights.accessRightsopen access
dc.subject.ecienciaAeronáuticaes
dc.titleNonlinear Analysis of PrandtlPlane Joined Wings: Effects of Anisotropyen
dc.typeresearch article*
dc.type.hasVersionAM*
dspace.entity.typePublication
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