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Title: Evaluation of various multi-cell design concepts for crashworthiness design of thin-walled aluminum tubes
Authors: Acar, Erdem
Altın, Murat
Güler, Mehmet Ali
Keywords: Energy absorption 
thin-walled tubes
Issue Date: 2019
Publisher: Elsevier Ltd.
Source: Acar, E., Altin, M., and Güler, M. A. (2019). Evaluation of various multi-cell design concepts for crashworthiness design of thin-walled aluminum tubes. Thin-Walled Structures, 142, 227-235.
Abstract: In this paper, we evaluate various multi-cell design concepts to optimize the crash performances of thin-walled aluminum tubes. The crash performances of the tubes are evaluated by means of two metrics: the crush force efficiency (CFE) and the specific energy absorption (SEA). The CFE and SEA of the tubes are predicted through the use of the finite element analysis software LS-DYNA. Experiments are also conducted to validate the finite element models. Thirty different multi-cell design concepts are evaluated in terms of CFE and SEA, and the best design concept is selected for further evaluation. Next, we perform surrogate-based optimization of the selected design concept, upon which we find that optimum design for maximum CFE which utilizes smaller wall thickness values (except the wall thickness of the inner tube) and larger tube diameters than those of the corresponding ones for the optimum design for maximum SEA. Additionally, the optimized designs exhibit remarkable CFE and SEA performances. © 2019
ISSN:  02638231
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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