Buckling Behaviour of Stainless Steel Square Hollow Sections

Abstract:

Structural stainless steel design guidelines should appropriately recognise its characteristic beneficial properties such as material nonlinearity and significant strain hardening. The Continuous Strength Method (CSM) exploits those through a strain based approach for both stocky and slender cross-sections. In this paper, a new design method is proposed that combines the CSM with Perry type buckling curves. Numerical models were developed to investigate effects of various parameters on column strength and to develop full column curves. It was observed that material nonlinearity significantly influence column strengths, and hence, different column curves were developed for a total of 20 material property combinations by calibrating imperfection factor and limiting slenderness ratio for each set. Proposed method includes the strain hardening benefits for stocky section, and abolished the necessity of calculating effective cross-sectional properties for slender sections. Performance of the proposed technique is compared against those obtained by the Eurocode EN1993-1-4.

• Periodical: Applied Mechanics and Materials (Volume 853)
• Pages: 301-305
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.853.301
• Online since: September 2016
• Authors: Shameem Ahmed, Mahmud Ashraf, Mohammad Anwar-Us-Saadat*
• Keywords: Column Curves, Continuous Strength Method, Critical Buckling Stress, Perry Curves

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