stainless steel; fire; thin-walled; numerical modelling; local buckling
Abstract :
[en] In this paper, the structural response of stainless steel thin-walled elements
submitted to fire is analysed numerically by means of the geometrically and materially non-linear Finite Element program SAFIR, including imperfections. In order to make these simulations, two main changes in the program were made: (i) the code was changed in order to deal with the stainless steel 2D material constitutive law to be used with shell elements and (ii) the possibility of the program to take into account residual stresses with shell finite elements was introduced. The stainless steel stress–strain relationship at high temperatures was based on the one presented in part 1.2 of Eurocode 3. To model the strain hardening exhibited by the stainless steels, using the shell element formulation, an approximation to the Eurocode 3 constitutive law was needed. Local and global geometrical imperfections were considered in the simulations. The paper shows the influence of the residual stresses on the ultimate load-carrying capacity of thin-walled stainless steel structural elements in case of fire.
Disciplines :
Materials science & engineering
Author, co-author :
Lopes, Nuno
Vila Real, Paulo
Simoes da Silva, Luís
Franssen, Jean-Marc ; Université de Liège - ULiège > Département Argenco : Secteur SE > Ingénierie du feu
Language :
English
Title :
Numerical Modelling of Thin-Walled Stainless Steel Structural Elements in Case of Fire
Publication date :
January 2010
Journal title :
Fire Technology
ISSN :
0015-2684
eISSN :
1572-8099
Publisher :
Springer Science & Business Media B.V., Dordrecht, Netherlands
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