Criteria for occurrence of flutter instability before buckling in nonconservative dissipative systems

Kounadis, AN

dc.contributor.author	Kounadis, AN	en
dc.date.accessioned	2014-03-01T01:12:43Z
dc.date.available	2014-03-01T01:12:43Z
dc.date.issued	1997	en
dc.identifier.issn	0001-1452	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/12220
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0006174896&partnerID=40&md5=c03219af2ef5c73902dd265a0bc84c55	en
dc.subject.classification	Engineering, Aerospace	en
dc.subject.other	DIVERGENCE INSTABILITY	en
dc.subject.other	REGIONS	en
dc.title	Criteria for occurrence of flutter instability before buckling in nonconservative dissipative systems	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	1997	en
heal.abstract	The occurrence of flutter instability through a Hopf bifurcation before static buckling in regions of divergence in nonconservative, nonself-adjoint, dissipative systems is thoroughly discussed using a qualitative analysis. This region where both Ziegler's and static criterion may fail to predict the actual critical load is defined via two values (bounds) of the nonconservativeness loading parameter eta; the upper bound corresponds to eta = 0.5 (being invariant with respect to all other parameters), whereas the lower bound corresponds to a double critical (divergence) point beyond which there are no adjacent equilibria. The location of the last point (lying always between eta = 0 and 0.5) depends on a stiffness parameter. It is also found that the region of nonexistence of adjacent equilibria becomes maximum (minimum) when the double critical point corresponds to eta = 0.5 (eta = 0). The interaction of vanishing damping with various parameters leads to new phenomena related to point and periodic attractors as well as to a new type of dynamic bifurcation.	en
heal.publisher	AMER INST AERONAUT ASTRONAUT	en
heal.journalName	AIAA Journal	en
dc.identifier.isi	ISI:A1997WM09800014	en
dc.identifier.volume	35	en
dc.identifier.issue	3	en
dc.identifier.spage	509	en
dc.identifier.epage	518	en