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A 2D beam element for the analysis of flexural buckling of steel structures at elevated temperatures
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.ORCID iD: 0000-0003-2104-382X
2018 (English)In: Applications of Fire Engineering - Proceedings of the International Conference of Applications of Structural Fire Engineering, ASFE 2017, CRC Press/Balkema , 2018, p. 199-208Conference paper, Published paper (Refereed)
Abstract [en]

The paper describes the development of a two-dimensional (2D) nonlinear beam finite element that includes advanced path-following capabilities for detecting bifurcation instability of steel elements subjected to fire loading. A co-rotational formulation was used for describing the beam kinematic. The degradation of the steel mechanical properties at high temperature according to the Eurocode 1993-1-2 was considered by integrating the material constitutive law based on a predetermined temperature field in the cross section. Advanced path-following methods were implemented to analyse the elastic-plastic post-buckling behaviour of compressed steel elements at high temperature without the need of introducing geometrical imperfections. To highlight the practical implications, a parametric analysis showed that the element could reproduce the EN1993-1-2 buckling curve. The obtained outcomes were validated against experimental and numerical data obtained with commercial software ABAQUS and SAFIR. 

Place, publisher, year, edition, pages
CRC Press/Balkema , 2018. p. 199-208
Keywords [en]
ABAQUS, Elastoplasticity, Mechanical properties, Steel beams and girders, Bifurcation instability, Co-rotational formulation, Elevated temperature, Geometrical imperfections, Mechanical properties at high temperatures, Parametric -analysis, Path following methods, Two Dimensional (2 D), Fires
National Category
Other Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-247454DOI: 10.1201/9781315107202-23Scopus ID: 2-s2.0-85058088158ISBN: 9781138092914 (print)OAI: oai:DiVA.org:kth-247454DiVA, id: diva2:1303013
Conference
International Conference of Applications of Structural Fire Engineering, ASFE 2017, 7 September 2017 through 8 September 2017
Note

QC20190408

Available from: 2019-04-08 Created: 2019-04-08 Last updated: 2019-04-08Bibliographically approved

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Battini, Jean-Marc

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CiteExportLink to record
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Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
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  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf