Nonlinear buckling of imperfect systems with symmetric imperfections

Ioannides, GI; Raftoyiannis, IG; Kounadis, AN

dc.contributor.author	Ioannides, GI	en
dc.contributor.author	Raftoyiannis, IG	en
dc.contributor.author	Kounadis, AN	en
dc.date.accessioned	2014-03-01T01:21:08Z
dc.date.available	2014-03-01T01:21:08Z
dc.date.issued	2004	en
dc.identifier.issn	0939-1533	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/16081
dc.subject	Bifurcational load	en
dc.subject	Buckling	en
dc.subject	Imperfection	en
dc.subject	Nonlinear stability	en
dc.subject	Sensitivity	en
dc.subject.classification	Mechanics	en
dc.subject.other	Bifurcation (mathematics)	en
dc.subject.other	Buckling	en
dc.subject.other	Degrees of freedom (mechanics)	en
dc.subject.other	Elasticity	en
dc.subject.other	Nonlinear equations	en
dc.subject.other	Stiffness	en
dc.subject.other	Structural loads	en
dc.subject.other	Bifurcational loads	en
dc.subject.other	Nonlinear stability	en
dc.subject.other	Structural analysis	en
dc.title	Nonlinear buckling of imperfect systems with symmetric imperfections	en
heal.type	journalArticle	en
heal.identifier.primary	10.1007/s00419-004-0328-7	en
heal.identifier.secondary	http://dx.doi.org/10.1007/s00419-004-0328-7	en
heal.language	English	en
heal.publicationDate	2004	en
heal.abstract	The nonlinear stability of a 2-DOF imperfect elastic system with symmetric imperfections under a concentrated load is thoroughly discussed using an analytical approach. The perfect system loses its stability via an unstable symmetric bifurcation, which upon inclusion of imperfections is degenerated to a limit point. In this paper, it is shown that when the imperfections are symmetric, the system loses its stability through an unstable symmetric bifurcation point lying on the nonlinear prebuckling path. The corresponding critical (bifurcational) load is much lower than the limit point load related to symmetric buckling. The effect of initial imperfections on the critical bifurcational load (imperfection sensitivity) is also analytically discussed in detail. The paper is supplemented by various numerical results.	en
heal.publisher	SPRINGER-VERLAG	en
heal.journalName	Archive of Applied Mechanics	en
dc.identifier.doi	10.1007/s00419-004-0328-7	en
dc.identifier.isi	ISI:000221055200009	en
dc.identifier.volume	73	en
dc.identifier.issue	9-10	en
dc.identifier.spage	711	en
dc.identifier.epage	717	en