Theoretical prediction and optimization of multi-cell hexagonal tubes under axial crashing

Qiu, N; Gao, Y; Fang, J; Feng, Z; Sun, G; Li, Q

Theoretical prediction and optimization of multi-cell hexagonal tubes under axial crashing

Qiu, N Gao, Y Fang, J

Feng, Z Sun, G Li, Q

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Publication Type:: Journal Article
Citation:: Thin-Walled Structures, 2016, 102 pp. 111 - 121
Issue Date:: 2016-05-01

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Field	Value	Language
dc.contributor.author	Qiu, N	en_US
dc.contributor.author	Gao, Y	en_US
dc.contributor.author	Fang, J https://orcid.org/0000-0003-0119-6108	en_US
dc.contributor.author	Feng, Z	en_US
dc.contributor.author	Sun, G	en_US
dc.contributor.author	Li, Q	en_US
dc.date.issued	2016-05-01	en_US
dc.identifier.citation	Thin-Walled Structures, 2016, 102 pp. 111 - 121	en_US
dc.identifier.issn	0263-8231	en_US
dc.identifier.uri	http://hdl.handle.net/10453/99683
dc.description.abstract	© 2016 Elsevier Ltd. All rights reserved. In this paper, the analytical formulas of mean crashing force for four different hexagonal tubes with multiple cells were first derived based on the Simplified Super Folding Element (SSFE) theory through several typical constituent elements: corner element, three-panel angular element I and three-panel angular element II. The numerical simulations of hexagonal multi-cell configurations were then correlated with the derived analytical solutions. Finally, both analytical formulas and finite element analysis (FEA) based surrogate models were employed to optimize the cross-sectional dimensions of the hexagonal tubes. From the optimization results, web-to-web (W2W) is the most efficient configuration in improving the crashing behavior, while corner-to-corner (C2C) is the worst of these four configurations. Importantly, the Pareto fronts obtained from the analytical formulas agree well with those from the FEA based surrogate models. As a result, analytical formulas could be recommended in crashworthiness optimization for the sake of computational efficiency.	en_US
dc.relation.ispartof	Thin-Walled Structures	en_US
dc.relation.isbasedon	10.1016/j.tws.2016.01.023	en_US
dc.subject.classification	Civil Engineering	en_US
dc.title	Theoretical prediction and optimization of multi-cell hexagonal tubes under axial crashing	en_US
dc.type	Journal Article
utslib.citation.volume	102	en_US
utslib.for	0905 Civil Engineering	en_US
utslib.for	0913 Mechanical Engineering	en_US
utslib.for	0901 Aerospace Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
utslib.copyright.status	closed_access
pubs.publication-status	Published	en_US
pubs.volume	102	en_US

Abstract:

© 2016 Elsevier Ltd. All rights reserved. In this paper, the analytical formulas of mean crashing force for four different hexagonal tubes with multiple cells were first derived based on the Simplified Super Folding Element (SSFE) theory through several typical constituent elements: corner element, three-panel angular element I and three-panel angular element II. The numerical simulations of hexagonal multi-cell configurations were then correlated with the derived analytical solutions. Finally, both analytical formulas and finite element analysis (FEA) based surrogate models were employed to optimize the cross-sectional dimensions of the hexagonal tubes. From the optimization results, web-to-web (W2W) is the most efficient configuration in improving the crashing behavior, while corner-to-corner (C2C) is the worst of these four configurations. Importantly, the Pareto fronts obtained from the analytical formulas agree well with those from the FEA based surrogate models. As a result, analytical formulas could be recommended in crashworthiness optimization for the sake of computational efficiency.

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http://hdl.handle.net/10453/99683