Evaluation of the perturbation parameters in buckled rectangular pin-ended Euler struts by caustics

Theocaris, PS; Lazopoulos, C

dc.contributor.author	Theocaris, PS	en
dc.contributor.author	Lazopoulos, C	en
dc.date.accessioned	2014-03-01T01:08:47Z
dc.date.available	2014-03-01T01:08:47Z
dc.date.issued	1992	en
dc.identifier.issn	09391533	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/10694
dc.subject	Experimental Evaluation	en
dc.subject	Higher Order	en
dc.subject.other	Mathematical Techniques - Perturbation Techniques	en
dc.subject.other	Stresses	en
dc.subject.other	Elastic Buckling	en
dc.subject.other	Euler Struts	en
dc.subject.other	Reflected Caustics	en
dc.subject.other	Beams and Girders	en
dc.title	Evaluation of the perturbation parameters in buckled rectangular pin-ended Euler struts by caustics	en
heal.type	journalArticle	en
heal.identifier.primary	10.1007/BF00808731	en
heal.identifier.secondary	http://dx.doi.org/10.1007/BF00808731	en
heal.publicationDate	1992	en
heal.abstract	The optical method of reflected caustics was applied to beam buckling problems. The reflected rays of a light beam (either parallel, or convergent, or divergent) on the flanks of the strut create caustics which consist of two strongly illuminated straight lines, confining the luminous region of the strut. By measuring the distance between the extremities of the caustics, the perturbation parameter s of the buckled beam can be defined. The accurate experimental evaluation of s allows the solution of the respective Euler expansion equations for the critical buckling load and its higher order terms in the post-buckling state of the strut. The method is a versatile and sensitive technique for experimentally defining the mode of elastic buckling of struts and can be extended to study plastic buckling cases. © 1992 Springer-Verlag.	en
heal.publisher	Springer-Verlag	en
heal.journalName	Archive of Applied Mechanics	en
dc.identifier.doi	10.1007/BF00808731	en
dc.identifier.volume	62	en
dc.identifier.issue	2	en
dc.identifier.spage	83	en
dc.identifier.epage	90	en