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H.S.S. Ahmed, A. Sable, S. Ghosh, "Probabilistic Capacity Estimation of Cold-Formed Steel Channel Sections with Type-1 Imperfections", in , (Editors), "Proceedings of the Twelfth International Conference on Computational Structures Technology", Civil-Comp Press, Stirlingshire, UK, Paper 127, 2014. doi:10.4203/ccp.106.127

Keywords: cold-formed steel, imperfection, statistics, unlipped, channel, strength curve..

Summary

The force carrying capacity of cold-formed steel (CFS) sections depends on the shape achieved through the cold-forming process. Slight deviations from the target shape may affect a CFS section's capacity in a significant way. Local geometric imperfections result in a reduction in the flexural capacity of a CFS member. The work, described in this paper, focuses on the effect of Type-1 local geometric imperfections on the elastic flexural buckling strength of an unlipped channel section. Data available for such imperfections are used to statistically characterise it. Using a Monte Carlo simulation based framework and nonlinear finite element analysis, the statistics of elastic flexural buckling strength of an imperfect member is obtained for a range of nondimensional slenderness ratios (0.75 to 2.0). The imperfection is observed to reduce the flexural strength of the member significantly. This reduction increases with the increasing slenderness. At the recommended design level, a 20.8% reduction is observed at a non-dimensional slenderness of 2.0.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 106 PROCEEDINGS OF THE TWELFTH INTERNATIONAL CONFERENCE ON COMPUTATIONAL STRUCTURES TECHNOLOGY Edited by: Paper 127 Probabilistic Capacity Estimation of Cold-Formed Steel Channel Sections with Type-1 Imperfections H.S.S. Ahmed, A. Sable and S. Ghosh Department of Civil Engineering, Indian Institute of Technology Bombay, Mumbai, India doi:10.4203/ccp.106.127 purchase the full-text of this paper Full Bibliographic Reference for this paper H.S.S. Ahmed, A. Sable, S. Ghosh, "Probabilistic Capacity Estimation of Cold-Formed Steel Channel Sections with Type-1 Imperfections", in , (Editors), "Proceedings of the Twelfth International Conference on Computational Structures Technology", Civil-Comp Press, Stirlingshire, UK, Paper 127, 2014. doi:10.4203/ccp.106.127 Keywords: cold-formed steel, imperfection, statistics, unlipped, channel, strength curve.. Summary The force carrying capacity of cold-formed steel (CFS) sections depends on the shape achieved through the cold-forming process. Slight deviations from the target shape may affect a CFS section's capacity in a significant way. Local geometric imperfections result in a reduction in the flexural capacity of a CFS member. The work, described in this paper, focuses on the effect of Type-1 local geometric imperfections on the elastic flexural buckling strength of an unlipped channel section. Data available for such imperfections are used to statistically characterise it. Using a Monte Carlo simulation based framework and nonlinear finite element analysis, the statistics of elastic flexural buckling strength of an imperfect member is obtained for a range of nondimensional slenderness ratios (0.75 to 2.0). The imperfection is observed to reduce the flexural strength of the member significantly. This reduction increases with the increasing slenderness. At the recommended design level, a 20.8% reduction is observed at a non-dimensional slenderness of 2.0. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £65 +P&P)
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