Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/7100
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dc.contributor.authorAcar, Erdem-
dc.contributor.authorGüler, Mehmet Ali-
dc.contributor.authorGerceker, B.-
dc.contributor.authorCerit, M. E.-
dc.contributor.authorBayram, B.-
dc.date.accessioned2021-09-11T15:45:33Z-
dc.date.available2021-09-11T15:45:33Z-
dc.date.issued2011en_US
dc.identifier.issn0263-8231-
dc.identifier.issn1879-3223-
dc.identifier.urihttps://doi.org/10.1016/j.tws.2010.08.010-
dc.identifier.urihttps://hdl.handle.net/20.500.11851/7100-
dc.description.abstractIn this paper, the effects of tapering and introducing axisymmetric indentations on the crash performances of thin-walled tubes are investigated. The crash performances of the tubes are evaluated using two metrics: the crush force efficiency (CFE, the ratio of the average crushing load to the peak load), and the specific energy absorption (SEA, absorbed energy per unit mass). The optimum values of the number of the axisymmetric indentations, the radius of the indentations, the taper angle and the tube thickness are sought for maximum CFE and maximum SEA using surrogate based optimization. In addition, multi-objective optimization of the tubes is performed by maximizing a composite objective function that provides a compromise between CFE and SEA. The CFE and SEA values at the training points of surrogate models (metamodels) are computed using the finite element analysis code LS-DYNA. Polynomial response surfaces, radial basis functions, and Kriging are the different surrogate models used in this study. Surrogate based optimization of the tubes showed that the tubes with indentations have better crush performance than tubes without indentations. It is found that maximum CFE requires large number of indentations with high radius, small thickness, and medium taper angle, while maximum SEA requires small number of indentations with low radius, large thickness and small taper angle. It is also found that the globally most accurate surrogate model does not necessarily lead to the optimum. (C) 2010 Elsevier Ltd. All rights reserved.en_US
dc.description.sponsorshipTurkish Ministry of Industry and TradeMinistry of Science, Industry & Technology - Turkey; TEMSA ARGE VE TEKNOLOJI A.S. [00236.STZ.2008-1]en_US
dc.description.sponsorshipThis study is funded by the Turkish Ministry of Industry and Trade and TEMSA ARGE VE TEKNOLOJI A.S. within the scope of the SAN-TEZ project 00236.STZ.2008-1.en_US
dc.language.isoenen_US
dc.publisherElsevier Sci Ltden_US
dc.relation.ispartofThin-Walled Structuresen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectCrush force efficiencyen_US
dc.subjectSpecific energy absorptionen_US
dc.subjectFinite element analysisen_US
dc.subjectLS-DYNAen_US
dc.subjectSurrogate modelsen_US
dc.subjectMulti-objective optimizationen_US
dc.subjectAxisymmetric indentationen_US
dc.subjectTaperen_US
dc.subjectTubesen_US
dc.titleMulti-objective crashworthiness optimization of tapered thin-walled tubes with axisymmetric indentationsen_US
dc.typeArticleen_US
dc.departmentFaculties, Faculty of Engineering, Department of Mechanical Engineeringen_US
dc.departmentFakülteler, Mühendislik Fakültesi, Makine Mühendisliği Bölümütr_TR
dc.identifier.volume49en_US
dc.identifier.issue1en_US
dc.identifier.startpage94en_US
dc.identifier.endpage105en_US
dc.authorid0000-0002-1159-556X-
dc.authorid0000-0002-3661-5563-
dc.authorid0000-0002-1159-556X-
dc.authorid0000-0002-3661-5563-
dc.identifier.wosWOS:000285822600009en_US
dc.identifier.scopus2-s2.0-78649480940en_US
dc.institutionauthorAcar, Erdem-
dc.identifier.doi10.1016/j.tws.2010.08.010-
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.identifier.scopusqualityQ1-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.grantfulltextnone-
item.fulltextNo Fulltext-
item.openairetypeArticle-
item.cerifentitytypePublications-
item.languageiso639-1en-
crisitem.author.dept02.7. Department of Mechanical Engineering-
crisitem.author.dept02.7. Department of Mechanical Engineering-
Appears in Collections:Makine Mühendisliği Bölümü / Department of Mechanical Engineering
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection
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