A numerical study on the influence of internal corrugated reinforcements on the biaxial bending collapse of thin-walled beams

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dc.contributor.authorVignjevic, Rade
dc.contributor.authorLiang, Ce
dc.contributor.authorHughes, Kevin
dc.contributor.authorBrown, Jason C.
dc.contributor.authorDe Vuyst, Tom
dc.contributor.authorDjordjevic, Nenad
dc.contributor.authorCampbell, James C.
dc.date.accessioned2020-02-03T15:48:59Z
dc.date.available2020-02-03T15:48:59Z
dc.date.issued2019-07-25
dc.description.abstractThe Heat Treatment Forming and in-die Quench (HFQ) process allows for manufacturing of more complex geometries from Aluminium sheets than ever before, which can be exploited in lightweight automotive and aerospace structures. One possible application is manufacturing thin walled beams with corrugated internal reinforcements for complex geometries. This work considers different internal reinforcements (C-section and corrugated) to improve the energy absorption properties of thin walled rectangular beams under uniaxial and biaxial deep bending collapse, for loading angles ranging from 0 to 90 deg, in 15° increments. Using LS-DYNA simulations experimentally validated through unreinforced metallic tubes under quasi-static bending collapse, the finite element results demonstrate the stabilising effect of the reinforcements and an increase in the buckling strength of the cross section. Corrugated reinforcements showed a greater potential for increasing specific energy absorption (SEA), which was supported by investigating key geometric parameters, including corrugation angle, depth and number. This favourable response is due to an increased amount of material undergoing plastic deformation, which consequently improves performance of the beam undergoing post buckling and deep collapse. This concept is applicable to vehicle and aircraft passive safety, with the requirement that the considered geometries are manufacturable from Aluminium Alloys sheet only, using the HFQ processen_UK
dc.identifier.citationVignjevic R, Liang C, Hughes K, et al., (2019) A numerical study on the influence of internal corrugated reinforcements on the biaxial bending collapse of thin-walled beams. Thin-Walled Structures, Volume 144, November 2019, Article number 106277en_UK
dc.identifier.issn0263-8231
dc.identifier.urihttps://doi.org/10.1016/j.tws.2019.106277
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/15079
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectUniaxial and biaxial bending collapseen_UK
dc.subjectPost buckling and deep collapseen_UK
dc.subjectPost buckling and deep collapseen_UK
dc.subjectSimulation led designen_UK
dc.subjectPassive energy absorption concepten_UK
dc.titleA numerical study on the influence of internal corrugated reinforcements on the biaxial bending collapse of thin-walled beamsen_UK
dc.typeArticleen_UK

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