Structural behaviour of thin-walled CHS-RHS T-joints : experimental and numerical assessment.

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dc.contributor.authorGuerra, Messias Júnio Lopes
dc.contributor.authorPereira, Daniel José Rocha
dc.contributor.authorSilva Neto, João Batista da
dc.contributor.authorNunes, Gabriel Vieira
dc.contributor.authorSarmanho, Arlene Maria Cunha
dc.contributor.authorLima, Luciano Rodrigues Ornelas de
dc.date.accessioned2021-11-15T15:13:08Z
dc.date.available2021-11-15T15:13:08Z
dc.date.issued2021pt_BR
dc.description.abstractThe design of tubular joints with slender cross-sections is currently limited by the validity ranges of established international design standards. Aiming to assess the structural behaviour of tubular joints characterised by thinwalled chord cross-sections, this paper initially reports, an experimental investigation into tubular T-joints consisted of CHS braces welded to thin-walled cold-formed RHS chords, which slenderness values were outside of the current design standard limits. The experimental programme was carried out on 12 cold-formed steel slender cross-section prototypes where the braces were subjected to axial compressive loading. The geometric parameters, including chord and brace thickness and brace diameter were varied. The connected chord face failure was the failure mode observed in all tests. The results of the experimental tests were thoroughly discussed. A second step was used to calibrate a numerical model that was the basis for a parametric analysis involving the most relevant parameters affecting the joint’s behaviour. The obtained joint’s strengths were compared with those forecasted by ISO 14346 developed for compact cross-sections modifying the chord stress function concerning the elastic cross-section modulus and effective cross-section area when slender cross-section chords are concerned. However, this approach leads to scattered predictions, roughly too conservative. Finally, this paper proposes an alternative design approach for the studied joints that are more accurate in predicting their strength when compared to the presented experimental and numerical results.pt_BR
dc.identifier.citationGUERRA, M. J. L. et al. Structural behaviour of thin-walled CHS-RHS T-joints : experimental and numerical assessment. Structures, v. 32, p. 548-561, ago. 2021. Disponível em: <https://www.sciencedirect.com/science/article/abs/pii/S2352012421001880>. Acesso em: 12 set. 2021.pt_BR
dc.identifier.doihttps://doi.org/10.1016/j.istruc.2021.03.008pt_BR
dc.identifier.issn2352-0124
dc.identifier.urihttp://www.repositorio.ufop.br/jspui/handle/123456789/13943
dc.identifier.uri2https://www.sciencedirect.com/science/article/abs/pii/S2352012421001880pt_BR
dc.language.isoen_USpt_BR
dc.rightsrestritopt_BR
dc.subjectHollow sectionspt_BR
dc.subjectTubular jointspt_BR
dc.subjectThin-walled cross-sectionspt_BR
dc.subjectChord face failurept_BR
dc.subjectExperimental analysispt_BR
dc.titleStructural behaviour of thin-walled CHS-RHS T-joints : experimental and numerical assessment.pt_BR
dc.typeArtigo publicado em periodicopt_BR
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