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

Lee, YS; Vakakis, AF; Bergman, LA; Michael McFarland, D; Kerschen, G

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