Hdl Handle:
http://hdl.handle.net/10545/621442
Title:
Experimental and numerical study on crashworthiness of cold-formed dimpled steel columns
Authors:
Liang, Ce; Wang, Chang; Nguyen, Van Bac; English, Martin; Mynors, Diane
Abstract:
The UltraSTEEL® forming process forms plain steel sheets into dimpled steel sheets and this process increases the sheet material's strengths by generating plastic deformation on the material during the process. This paper presented experimental testing and developed a finite element (FE) model to predict the energy absorption characteristics of dimpled thin-walled structures under axial impact loads, and compared the energy absorption efficiencies (specific energy absorption) of plain and dimpled columns. Dynamic experimental tests were conducted using the drop tower at two different impact velocities. Explicit FE analysis were then carried out to simulate the experiments. The FE method was validated by comparing the numerical and experimental failure modes, crushing force response and specific energy absorptions. The validated FE method was then applied in an optimization study on the parameter of forming depth. The effects of forming depth on both geometry and material properties have been taken into account in the optimization study. It has been found that the specific energy absorption of dimpled columns is up to 16.3% higher than the comparable plain columns.
Affiliation:
University of Sussex; University of Derby; Hadley Industries plc
Citation:
Liang, C. et al. (2017) 'Experimental and numerical study on crashworthiness of cold-formed dimpled steel columns', Thin-Walled Structures, Vol 112, pp. 83–91
Publisher:
Elsevier
Journal:
Thin-Walled Structures
Issue Date:
Mar-2017
URI:
http://hdl.handle.net/10545/621442
DOI:
10.1016/j.tws.2016.12.020
Additional Links:
http://www.sciencedirect.com/science/article/pii/S0263823116305195
Type:
Article
Language:
en
ISSN:
02638231
Sponsors:
N/A
Appears in Collections:
Department of Mechanical Engineering & the Built Environment

Full metadata record

DC FieldValue Language
dc.contributor.authorLiang, Ceen
dc.contributor.authorWang, Changen
dc.contributor.authorNguyen, Van Bacen
dc.contributor.authorEnglish, Martinen
dc.contributor.authorMynors, Dianeen
dc.date.accessioned2017-02-21T14:54:32Z-
dc.date.available2017-02-21T14:54:32Z-
dc.date.issued2017-03-
dc.identifier.citationLiang, C. et al. (2017) 'Experimental and numerical study on crashworthiness of cold-formed dimpled steel columns', Thin-Walled Structures, Vol 112, pp. 83–91en
dc.identifier.issn02638231-
dc.identifier.doi10.1016/j.tws.2016.12.020-
dc.identifier.urihttp://hdl.handle.net/10545/621442-
dc.description.abstractThe UltraSTEEL® forming process forms plain steel sheets into dimpled steel sheets and this process increases the sheet material's strengths by generating plastic deformation on the material during the process. This paper presented experimental testing and developed a finite element (FE) model to predict the energy absorption characteristics of dimpled thin-walled structures under axial impact loads, and compared the energy absorption efficiencies (specific energy absorption) of plain and dimpled columns. Dynamic experimental tests were conducted using the drop tower at two different impact velocities. Explicit FE analysis were then carried out to simulate the experiments. The FE method was validated by comparing the numerical and experimental failure modes, crushing force response and specific energy absorptions. The validated FE method was then applied in an optimization study on the parameter of forming depth. The effects of forming depth on both geometry and material properties have been taken into account in the optimization study. It has been found that the specific energy absorption of dimpled columns is up to 16.3% higher than the comparable plain columns.en
dc.description.sponsorshipN/Aen
dc.language.isoenen
dc.publisherElsevieren
dc.relation.urlhttp://www.sciencedirect.com/science/article/pii/S0263823116305195en
dc.subjectExplicit dynamics finite element analysisen
dc.subjectAxial crushingen
dc.subjectEnergy absorptionen
dc.subjectSteel strengthen
dc.titleExperimental and numerical study on crashworthiness of cold-formed dimpled steel columnsen
dc.typeArticleen
dc.contributor.departmentUniversity of Sussexen
dc.contributor.departmentUniversity of Derbyen
dc.contributor.departmentHadley Industries plcen
dc.identifier.journalThin-Walled Structuresen
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