Buckling analysis of imperfect I-section beam-columns with stochastic shell finite elements

Schillinger, D; Papadopoulos, V; Bischoff, M; Papadrakakis, M

dc.contributor.author	Schillinger, D	en
dc.contributor.author	Papadopoulos, V	en
dc.contributor.author	Bischoff, M	en
dc.contributor.author	Papadrakakis, M	en
dc.date.accessioned	2014-03-01T01:32:58Z
dc.date.available	2014-03-01T01:32:58Z
dc.date.issued	2010	en
dc.identifier.issn	0178-7675	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20255
dc.subject	Buckling of I-section beam-columns	en
dc.subject	Evolutionary power spectra	en
dc.subject	Method of separation	en
dc.subject	Random field based imperfections	en
dc.subject	Spectral representation	en
dc.subject	Stochastic shell finite elements	en
dc.subject.classification	Mathematics, Interdisciplinary Applications	en
dc.subject.classification	Mechanics	en
dc.subject.other	Beam-columns	en
dc.subject.other	Method of separation	en
dc.subject.other	Power-spectra	en
dc.subject.other	Random fields	en
dc.subject.other	Shell finite elements	en
dc.subject.other	Spectral representations	en
dc.subject.other	Finite element method	en
dc.subject.other	Power spectrum	en
dc.subject.other	Shells (structures)	en
dc.subject.other	Stochastic systems	en
dc.subject.other	Buckling	en
dc.title	Buckling analysis of imperfect I-section beam-columns with stochastic shell finite elements	en
heal.type	journalArticle	en
heal.identifier.primary	10.1007/s00466-010-0488-y	en
heal.identifier.secondary	http://dx.doi.org/10.1007/s00466-010-0488-y	en
heal.language	English	en
heal.publicationDate	2010	en
heal.abstract	Buckling loads of thin-walled I-section beamcolumns exhibit a wide stochastic scattering due to the uncertainty of imperfections. The present paper proposes a finite element based methodology for the stochastic buckling simulation of I-sections, which uses random fields to accurately describe the fluctuating size and spatial correlation of imperfections. The stochastic buckling behaviour is evaluated by crude Monte-Carlo simulation, based on a large number of I-section samples, which are generated by spectral representation and subsequently analyzed by nonlinear shell finite elements. The application to an example I-section beam-column demonstrates that the simulated buckling response is in good agreement with experiments and follows key concepts of imperfection triggered buckling. The derivation of the buckling load variability and the stochastic interaction curve for combined compression and major axis bending as well as stochastic sensitivity studies for thickness and geometric imperfections illustrate potential benefits of the proposed methodology in buckling related research and applications. © Springer-Verlag 2010.	en
heal.publisher	SPRINGER	en
heal.journalName	Computational Mechanics	en
dc.identifier.doi	10.1007/s00466-010-0488-y	en
dc.identifier.isi	ISI:000277937300009	en
dc.identifier.volume	46	en
dc.identifier.issue	3	en
dc.identifier.spage	495	en
dc.identifier.epage	510	en