An improved analytical model for the prediction of the nonlinear behavior of flat and curved deployable space frames

Gantes, C

dc.contributor.author	Gantes, C	en
dc.date.accessioned	2014-03-01T01:12:37Z
dc.date.available	2014-03-01T01:12:37Z
dc.date.issued	1997	en
dc.identifier.issn	0143-974X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/12171
dc.subject	Analytical Model	en
dc.subject	Finite Element Model	en
dc.subject	Finite Element Simulation	en
dc.subject	Structural Response	en
dc.subject	Finite Element Analyses	en
dc.subject.classification	Construction & Building Technology	en
dc.subject.classification	Engineering, Civil	en
dc.subject.other	Finite element method	en
dc.subject.other	Mathematical models	en
dc.subject.other	Stress analysis	en
dc.subject.other	Structural analysis	en
dc.subject.other	Structural loads	en
dc.subject.other	Deployable space frames	en
dc.subject.other	Geometric nonlinearities	en
dc.subject.other	Structural frames	en
dc.title	An improved analytical model for the prediction of the nonlinear behavior of flat and curved deployable space frames	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S0143-974X(97)00042-4	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0143-974X(97)00042-4	en
heal.language	English	en
heal.publicationDate	1997	en
heal.abstract	The deployable space frames investigated in this paper consist of straight bars linked together in the factory as a compact bundle, which can then be unfolded into large-span, load-bearing structural forms, During the deployment process incompatibilities between the member lengths lead to the occurrence of strains and stresses resulting in a snap-through phenomenon that 'locks' the structures in their deployed configuration. The structural response during deployment is, therefore, characterized by geometric nonlinearities and hence accurate simulation of the deployment process requires sophisticated finite element modeling. In the present work, three versions of a simple analytical model are proposed that predict the intensity of the snap-through phenomenon based on geometric compatibility considerations. Deployable units for pat roofs or spherical domes are addressed, The objective of this approximation is to minimize the number of required finite element analyses during preliminary design, The proposed analytical model is validated through comparison to numerical results obtained by detailed finite element simulation. (C) 1997 Elsevier Science Ltd.	en
heal.publisher	ELSEVIER SCI LTD	en
heal.journalName	Journal of Constructional Steel Research	en
dc.identifier.doi	10.1016/S0143-974X(97)00042-4	en
dc.identifier.isi	ISI:000071508800009	en
dc.identifier.volume	44	en
dc.identifier.issue	1-2	en
dc.identifier.spage	129	en
dc.identifier.epage	158	en