Local Buckling of Aluminium Structures Exposed to Fire: Part 2: Finite Element Models

Type Article
Author(s)
J. Malijaars & L. Twilt (Materials Innovation Institute, TNO Built Environment & Geosciences
F. Soetens (Faculty of Architecture, Building & Planning, Eindhoven University of Technology)
Published Thin-Walled Structures
  Vol 47, Issue 5, Pgs 1418-1428
Year

November 2009

Keywords Aluminium; Creep model; Elevated temperature; Finite element method; Fire; Local buckling

Summary
A test series was carried out and reported in a corresponding paper on slender aluminium alloy sections, loaded in compression at elevated temperature. This paper gives the results of simulations of these tests with a finite element model. For this purpose, a novel constitutive model for fire exposed aluminium alloys is used. The critical temperatures obtained with the finite element models agree well with those of the tests (average difference 1 °C, standard deviation of 7 °C). The developed finite element models are used for determining the maximum plate width over thickness ratio at which the full plastic capacity is obtained before the plate buckles.

Availability:  ScienceDirect (current publisher: Elsevier Ltd)