Aeroelastic Stability Analysis Using Linear Matrix Inequalities

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dc.contributor.authorBueno, Douglas D.
dc.contributor.authorMarqui, Clayton R.
dc.contributor.authorGoes, Luiz C. S.
dc.contributor.authorGoncalvez, Paulo J. P. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2020-12-10T16:36:46Z
dc.date.available2020-12-10T16:36:46Z
dc.date.issued2012-01-01
dc.description.abstractThe present work describes an alternative methodology for identification of aeroelastic stability in a range of varying parameters. Analysis is performed in time domain based on Lyapunov stability and solved by convex optimization algorithms. The theory is outlined and simulations are carried out on a benchmark system to illustrate the method. The classical methodology with the analysis of the system's eigenvalues is presented for comparing the results and validating the approach. The aeroelastic model is represented in state space format and the unsteady aerodynamic forces are written in time domain using rational function approximation. The problem is formulated as a polytopic differential inclusion system and the conceptual idea can be used in two different applications. In the first application the method verifies the aeroelastic stability in a range of air density (or its equivalent altitude range). In the second one, the stability is verified for a range of velocities. These analyses are in contrast to the classical discrete analysis performed at fixed air density/velocity values. It is shown that this method is efficient to identify stability regions in the flight envelope and it offers promise for robust flutter identification.en
dc.description.affiliationUniv Estadual Paulista, BR-17033360 Bauru, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, BR-17033360 Bauru, SP, Brazil
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.format.extent545-551
dc.identifier.citationJournal Of The Brazilian Society Of Mechanical Sciences And Engineering. Heidelberg: Springer Heidelberg, v. 34, p. 545-551, 2012.
dc.identifier.issn1678-5878
dc.identifier.urihttp://hdl.handle.net/11449/194759
dc.identifier.wosWOS:000322253000002
dc.language.isoeng
dc.publisherSpringer
dc.relation.ispartofJournal Of The Brazilian Society Of Mechanical Sciences And Engineering
dc.sourceWeb of Science
dc.subjectflutter analysis
dc.subjectLMI
dc.subjectLyapunov function
dc.subjecttime domain
dc.titleAeroelastic Stability Analysis Using Linear Matrix Inequalitiesen
dc.typeArtigo
dcterms.licensehttp://www.springer.com/open+access/authors+rights?SGWID=0-176704-12-683201-0
dcterms.rightsHolderSpringer

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