Flexural Buckling of Fire Exposed Aluminium Columns

Type Article
Author(s)
J. Malijaars & L. Twilt (TNO Built Environment & Geosciences
F. Soetens (Faculty of Architecture, Building & Planning, Eindhoven University of Technology)
Published  Fire Safety Journal
   Vol 44, Issue 5, Pgs 711-717
Year

 July 2009

Keywords  Inelastic buckling; Flexural buckling; Fire design; Elevated temperature; Aluminium alloys

Summary
In order to study buckling of fire exposed aluminium columns, a finite element model is developed. The results of this model are verified with experiments. Based on a parametric study with the finite element model, it is concluded that the simple calculation model for flexural buckling of fire exposed aluminium columns in EN 1999-1-2 does not give an accurate prediction of the buckling resistance in fire. This paper proposes an alternative design model, which takes into account the shape of the stress–strain relationships of aluminium alloys at elevated temperatures. Predictions of this model agree well with that of the finite element model.

Availability:  ScienceDirect (current publisher: Elsevier Ltd)