Energy absorption behaviors and optimization design of thin-walled double-hat beam under bending

Zhang, B; Yao, R; Fang, J; Ma, R; Pang, T; Zhou, D

Energy absorption behaviors and optimization design of thin-walled double-hat beam under bending

Zhang, B Yao, R Fang, J

Ma, R Pang, T Zhou, D

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Publisher:: Elsevier
Publication Type:: Journal Article
Citation:: Thin-Walled Structures, 2022, 179, pp. 109577
Issue Date:: 2022-10-01

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Field	Value	Language
dc.contributor.author	Zhang, B
dc.contributor.author	Yao, R
dc.contributor.author	Fang, J https://orcid.org/0000-0003-0119-6108
dc.contributor.author	Ma, R
dc.contributor.author	Pang, T
dc.contributor.author	Zhou, D
dc.date.accessioned	2023-04-11T03:32:05Z
dc.date.available	2023-04-11T03:32:05Z
dc.date.issued	2022-10-01
dc.identifier.citation	Thin-Walled Structures, 2022, 179, pp. 109577
dc.identifier.issn	0263-8231
dc.identifier.uri	http://hdl.handle.net/10453/169542
dc.description.abstract	Thin-walled hat-shaped structures have gained growing interest attributed to their excellent performance and wide application in the vehicle industry. However, few systematic studies have been conducted on the design of hat-shaped structures with irregular sectional shapes. In present research, thin-walled double-hat beam (DHB) with different sectional configurations under dynamic three-point-bending are investigated by performing numerical simulations. First, the energy absorption mechanism of DHB is explored, and then an in-depth parametric study, including shape parameters o, p, q and thickness parameter k, is performed. The results show that all DHBs deform in bending with indentation mode. And compared with single-hat beam (SHB), the DHB has a significant advantage in loading capacity. When the design space is held fixed, the shape parameter o has the greatest influence on the bending behaviors of DHB, followed by parameter p, while parameter q has the least influence. In addition, it is also found that a larger thickness of the top hat leads to the increase of the SEA and PCF and the decrease of the hammer displacement. Finally, a multi-objective optimization based on lower confidence bound matrix (LCBM) criteria is conducted to determine the optimal design of DHB. The numerical results of the optimal DHB suggest that increasing the initial impacting velocity will make the SEA and PCF increase while make the displacement decrease.
dc.language	en
dc.publisher	Elsevier
dc.relation.ispartof	Thin-Walled Structures
dc.relation.isbasedon	10.1016/j.tws.2022.109577
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0901 Aerospace Engineering, 0905 Civil Engineering, 0913 Mechanical Engineering
dc.subject.classification	Civil Engineering
dc.title	Energy absorption behaviors and optimization design of thin-walled double-hat beam under bending
dc.type	Journal Article
utslib.citation.volume	179
utslib.for	0901 Aerospace Engineering
utslib.for	0905 Civil Engineering
utslib.for	0913 Mechanical Engineering
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	*
dc.date.updated	2023-04-11T03:32:03Z
pubs.publication-status	Published
pubs.volume	179

Abstract:

Thin-walled hat-shaped structures have gained growing interest attributed to their excellent performance and wide application in the vehicle industry. However, few systematic studies have been conducted on the design of hat-shaped structures with irregular sectional shapes. In present research, thin-walled double-hat beam (DHB) with different sectional configurations under dynamic three-point-bending are investigated by performing numerical simulations. First, the energy absorption mechanism of DHB is explored, and then an in-depth parametric study, including shape parameters o, p, q and thickness parameter k, is performed. The results show that all DHBs deform in bending with indentation mode. And compared with single-hat beam (SHB), the DHB has a significant advantage in loading capacity. When the design space is held fixed, the shape parameter o has the greatest influence on the bending behaviors of DHB, followed by parameter p, while parameter q has the least influence. In addition, it is also found that a larger thickness of the top hat leads to the increase of the SEA and PCF and the decrease of the hammer displacement. Finally, a multi-objective optimization based on lower confidence bound matrix (LCBM) criteria is conducted to determine the optimal design of DHB. The numerical results of the optimal DHB suggest that increasing the initial impacting velocity will make the SEA and PCF increase while make the displacement decrease.

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http://hdl.handle.net/10453/169542