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Title: Analytical formulation of the elastic-plastic behaviour of bi-symmetrical steel shapes
Authors: Baptista, A. M.
Muzeau, J. P.
Keywords: Analytical model;Elastic–plastic behaviour;Cross-section;Global deformation interaction;Internal forces interaction;Strain-hardening;Strain-hardening;Resistance capacity;Deformation capacity;Stiffness
Issue Date: 2006
Publisher: Elsevier
Citation: doi:10.1016/j.jcsr.2006.01.001
Abstract: This paper presents the analytical relationships of a non-linear model for the in-plane elastic–plastic analysis of bi-symmetrical steel shapes bent about one of their main axes. The basic variables are the cross-section global deformations, from which it is possible to evaluate the internal loads and the cross-section stiffness matrix components by means of simple expressions. Furthermore, the values of stresses and strains at any point of the cross-section may be determined, knowing the values of the internal loads, in the elastic and elastic–plastic domains. The effects of progressive yielding spreading, as well as those of material strain-hardening, are taken into account in the evaluation of the cross-section resistance capacity in the elastic–plastic domain. This analytical model represents an efficient, simple and accurate alternative to the elastic–plastic models based on numerical methods.
ISSN: 0143-974X
Appears in Collections:DE/NCE - Comunicações a congressos e artigos de revista

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