Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/4127
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dc.contributor.authorAcar, Erdem-
dc.contributor.authorYılmaz, Burak-
dc.contributor.authorGüler, Mehmet Ali-
dc.contributor.authorAltın, Murat-
dc.date.accessioned2021-01-27T13:45:03Z-
dc.date.available2021-01-27T13:45:03Z-
dc.date.issued2020-08
dc.identifier.citationAcar, E., Yilmaz, B., Güler, M. A., and Altin, M. (2020). Multi-fidelity crashworthiness optimization of a bus bumper system under frontal impact. Journal of the Brazilian Society of Mechanical Sciences and Engineering, 42(9), 1-17.en_US
dc.identifier.issn1806-3691
dc.identifier.issn1678-5878
dc.identifier.urihttps://hdl.handle.net/20.500.11851/4127-
dc.identifier.urihttps://link.springer.com/article/10.1007%2Fs40430-020-02572-3-
dc.description.abstractIn this study, crashworthiness of a bus bumper system with a special honeycomb beam is optimized under impact loading using a multi-fidelity optimization approach. The crash performance of the bumper system is evaluated using two metrics: crush force efficiency (CFE) and specific energy absorption (SEA). An optimization with aggregated objectives is performed to seek for an optimum bumper design. Optimum values of the crashbox length, honeycomb wall angle and honeycomb wall thickness are obtained to maximize composite objective function that provides a compromise between these two metrics. Commercial finite element software LS-DYNA is used to compute CFE and SEA values. Multi-fidelity modeling is used to combine data of low-fidelity model at all training points with high-fidelity data at some randomly selected training points to obtain accurate response predictions in less computational time. It is found that multi-fidelity optimization can reduce the computational cost by 33% with only 2% smaller composite objective function value compared to the high-fidelity optimization alternative.en_US
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.relation.ispartofJournal of the Brazilian Society of Mechanical Sciences and Engineeringen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectBumper systemen_US
dc.subjectCrashworthinessen_US
dc.subjectCrush force efficiencyen_US
dc.subjectEnergy absorptionen_US
dc.subjectMulti-fidelity optimizationen_US
dc.titleMulti-Fidelity Crashworthiness Optimization of a Bus Bumper System Under Frontal Impacten_US
dc.typeArticleen_US
dc.departmentFaculties, Faculty of Engineering, Department of Mechanical Engineeringen_US
dc.departmentFakülteler, Mühendislik Fakültesi, Makine Mühendisliği Bölümütr_TR
dc.identifier.volume42
dc.identifier.issue9
dc.authorid0000-0003-4814-5834-
dc.authorid0000-0002-3661-5563-
dc.identifier.wosWOS:000565239600001en_US
dc.identifier.scopus2-s2.0-85089983807en_US
dc.institutionauthorGüler, Mehmet Ali-
dc.institutionauthorAcar, Erdem-
dc.identifier.doi10.1007/s40430-020-02572-3-
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.identifier.scopusqualityQ2-
item.openairetypeArticle-
item.languageiso639-1en-
item.grantfulltextnone-
item.fulltextNo Fulltext-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.cerifentitytypePublications-
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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