Session Dates
19 Oct 2000
Abstract
In the actual design codes the interaction formula for local and overall buckling modes of thin-walled steel compression (TWSC) members, the effect of local buckling. is introduced by means of effective strength of short members. This paper proposes to replace, into the Ayrton-Perry interaction formula, the short member "effective" strength, which is based on the "effective width" approach by the plastic strength evaluated by means of local plastic mechanism analysis. There are some papers by Murray et al. [1,2,3], in which the plastic mechanisms corresponding to the local buckling of plates and TWSC members in compression are analysed. On this basis, the local·overall interactive buckling modes can be regarded as interaction between local rigid-plastic mode and overall-elastic one, but until now it was difficult to couple these two modes into an adequate interactive equation. The paper shows the use of proposed "plastic-elastic" approach for the analysis of some series of plain and lipped channel specimens in compression. Comparisons with test and EUROCODE 3 results are presented.
Department(s)
Civil, Architectural and Environmental Engineering
Research Center/Lab(s)
Wei-Wen Yu Center for Cold-Formed Steel Structures
Meeting Name
15th International Specialty Conference on Cold-Formed Steel Structures
Publisher
University of Missouri--Rolla
Document Version
Final Version
Rights
© 2000 University of Missouri--Rolla, All rights reserved.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Dubina, Dan and Ungureanu, Viorel, "Elastic-plastic Interactive Buckling of Thin-walled Steel Compression Members" (2000). CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018). 2.
https://scholarsmine.mst.edu/isccss/15iccfss/15iccfss-session4/2
Elastic-plastic Interactive Buckling of Thin-walled Steel Compression Members
In the actual design codes the interaction formula for local and overall buckling modes of thin-walled steel compression (TWSC) members, the effect of local buckling. is introduced by means of effective strength of short members. This paper proposes to replace, into the Ayrton-Perry interaction formula, the short member "effective" strength, which is based on the "effective width" approach by the plastic strength evaluated by means of local plastic mechanism analysis. There are some papers by Murray et al. [1,2,3], in which the plastic mechanisms corresponding to the local buckling of plates and TWSC members in compression are analysed. On this basis, the local·overall interactive buckling modes can be regarded as interaction between local rigid-plastic mode and overall-elastic one, but until now it was difficult to couple these two modes into an adequate interactive equation. The paper shows the use of proposed "plastic-elastic" approach for the analysis of some series of plain and lipped channel specimens in compression. Comparisons with test and EUROCODE 3 results are presented.
