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Enhancing robustness of instability suppression by means of multi-degree-of-freedom nonlinear energy sinks

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dc.contributor.author Lee, YS en
dc.contributor.author Vakakis, AF en
dc.contributor.author Bergman, LA en
dc.contributor.author Michael McFarland, D en
dc.contributor.author Kerschen, G en
dc.date.accessioned 2014-03-01T02:51:05Z
dc.date.available 2014-03-01T02:51:05Z
dc.date.issued 2007 en
dc.identifier.issn 02734508 en
dc.identifier.uri https://dspace.lib.ntua.gr/xmlui/handle/123456789/35353
dc.relation.uri http://www.scopus.com/inward/record.url?eid=2-s2.0-34547537883&partnerID=40&md5=db9844aeb4b4b8887fc2e88f723f3a1b en
dc.subject.other Instability suppression en
dc.subject.other Limit cycle oscillations (LCO) en
dc.subject.other Nonlinear energy sinks en
dc.subject.other Saddle-node en
dc.subject.other Aerodynamics en
dc.subject.other Bifurcation (mathematics) en
dc.subject.other Degrees of freedom (mechanics) en
dc.subject.other Robustness (control systems) en
dc.title Enhancing robustness of instability suppression by means of multi-degree-of-freedom nonlinear energy sinks en
heal.type conferenceItem en
heal.publicationDate 2007 en
heal.abstract Multi-degree-of-freedom nonlinear energy sinks (MDOF NESs) are utilized to improve robustness of suppression of limit cycle oscillations (LCOs) due to aeroelastic instability. Bifurcation analysis by a numerical continuation technique shows that controlling occurrence of a limit point cycle (LPC or saddle-node) bifurcation point above a Hopf bifurcation point is crucial to enhancing robustness. Not only greatly can MDOF NESs enhance the robustness of suppression against even strong external disturbances, but they can also yield a similar efficiency even with a smaller mass, compared to the SDOF NESs with the same parameter conditions. Nonlinear modal interactions between the aeroelastic modes and the MDOF NES are examined to demonstrate efficiency of the MDOF NES. en
heal.journalName Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference en
dc.identifier.volume 6 en
dc.identifier.spage 5924 en
dc.identifier.epage 5932 en


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