Optimum design of steel structures with web openings

Lagaros, ND; Psarras, LD; Papadrakakis, M; Panagiotou, G

dc.contributor.author	Lagaros, ND	en
dc.contributor.author	Psarras, LD	en
dc.contributor.author	Papadrakakis, M	en
dc.contributor.author	Panagiotou, G	en
dc.date.accessioned	2014-03-01T01:28:58Z
dc.date.available	2014-03-01T01:28:58Z
dc.date.issued	2008	en
dc.identifier.issn	0141-0296	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/19054
dc.subject	Evolution strategies	en
dc.subject	Steel structures	en
dc.subject	Structural optimization	en
dc.subject	Web openings	en
dc.subject.classification	Engineering, Civil	en
dc.subject.other	Finite element method	en
dc.subject.other	Optimization	en
dc.subject.other	Steel	en
dc.subject.other	Steel construction	en
dc.subject.other	Steel structures	en
dc.subject.other	Three dimensional	en
dc.subject.other	Topology	en
dc.subject.other	Characteristic testing	en
dc.subject.other	Design variables	en
dc.subject.other	Discretization	en
dc.subject.other	Evolution strategies	en
dc.subject.other	Finite-element discretization	en
dc.subject.other	Number and size	en
dc.subject.other	Optimiz ation problems	en
dc.subject.other	Optimum designs	en
dc.subject.other	Serviceability requirements	en
dc.subject.other	Shape designs	en
dc.subject.other	Structural elements	en
dc.subject.other	Structural strength	en
dc.subject.other	Topology optimization	en
dc.subject.other	Web openings	en
dc.subject.other	Structural optimization	en
dc.subject.other	design	en
dc.subject.other	discrete element method	en
dc.subject.other	finite element method	en
dc.subject.other	optimization	en
dc.subject.other	steel structure	en
dc.subject.other	three-dimensional modeling	en
dc.title	Optimum design of steel structures with web openings	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.engstruct.2008.02.002	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.engstruct.2008.02.002	en
heal.language	English	en
heal.publicationDate	2008	en
heal.abstract	The objective of this work is to perform optimum design of 3D steel structures having perforated I-section beams. The optimization problem is formulated as a combined sizing, shape and topology optimization problem. The cross-sectional dimensions of the columns and beams constitute the sizing design variables, while the number and size of the web openings of the beams constitute the topology and shape design variables, respectively. Two distinctive formulations of the optimization problem are considered depending on the finite element discretization implemented for simulating the structural elements. The two formulations, corresponding to beam and shell discretization, are compared in terms of the optimum designs achieved. A characteristic test example considered, showed that a quantifiable reduction in the weight of the structure is accomplished by allowing web openings in the beams of the structure without reducing structural strength or serviceability requirements. (C) 2008 Elsevier Ltd. All rights reserved.	en
heal.publisher	ELSEVIER SCI LTD	en
heal.journalName	Engineering Structures	en
dc.identifier.doi	10.1016/j.engstruct.2008.02.002	en
dc.identifier.isi	ISI:000259631200024	en
dc.identifier.volume	30	en
dc.identifier.issue	9	en
dc.identifier.spage	2528	en
dc.identifier.epage	2537	en