Abstract
This paper presents experimental and numerical investigations on the behaviour of thin-walled cold-formed steel single and starred angles with lips as stub and short columns, subjected to axial compression. A nonlinear finite element model was developed and verified against the ball- and bolted-end conditions. The specimens are modelled precisely for the numerical investigation using finite element analysis as done in the column tests carefully undercontrolled. Both geometric and material nonlinearities are included in the finite element model. The predicted column strengths by the numerical analysis are compared with the design column strengths calculated using the North American Standards for cold-formed steel structures. It is shown that the design column strengths calculated from the specification are generally conservative for cold-formed steel angle sections. Results from the FEA correlate well with experimental data, NAS-2007 and BS: 5950 (Part 5) predictions.
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Abbreviations
- FEA:
-
Finite element analysis
- P EXP :
-
Experimental ultimate load
- P FEA :
-
FEA ultimate load
- P BS :
-
Ultimate load predicted by the British Standards
- P NAS :
-
Ultimate load predicted by the North American Standards
- λ:
-
Slenderness ratio
References
BS: 5950-Part 5.: Structural use of steelwork in building—code of practice for design of cold-formed sections. British Standards Institution (1987)
NAS Manual: Cold-Formed Steel Design Manual. American Iron and Steel Institute (2007)
Young B., Chen J.: Column tests of cold-formed steel non-symmetric lipped angle sections. J. Constr. Steel Res. 64, 808–815 (2008)
Young B.: Experimental investigation of cold-formed steel lipped angle concentrically loaded compression members. J. Struct. Eng. 131(9), 1390–1396 (2005)
Young B., Ellobody E.: Design of cold-formed steel unequal angle compression members. J. Constr. Steel Res. 45, 330–338 (2007)
Young, B.; Ellobody, E.: Finite element analysis of cold-formed Steel lipped angle compression members. In: Proceedings of the Fourth International Conference on Advances in Steel Structures. Shanghai, China, pp. 469–478 (2005)
Liu Y., Chantel S.: Experimental study of steel single unequal-leg angles under eccentric compression. J. Constr. Steel Res. 67, 919–928 (2011)
Silvestre N., Dinis P.B., Camotim M.: Developments on the design of cold-formed steel angles. J. Struct. Eng. 139(5), 680–694 (2013)
Rasmussen K.: Design of angle columns with locally unstable legs. J. Struct. Eng. 131(10), 1553–1560 (2005)
Shifferawa Y.N., Schafer B.W.: Cold-formed steel lipped and plain angle columns with fixed ends. Thin Walled Struct. 80, 142–152 (2014)
Schafer B.W., Pekoz T.: Computational modelling of cold-formed steel: characterizing geometric imperfections and residual stress. J. Constr. Steel Res. 47, 193–210 (1998)
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Beulah Gnana Ananthi, G., Vishuvardhan, S. & Samuel Knight, G.M. Experimental and Numerical Investigation on Thin-Walled Single and Starred Angle Sections Under Compression. Arab J Sci Eng 40, 3417–3427 (2015). https://doi.org/10.1007/s13369-015-1776-9
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DOI: https://doi.org/10.1007/s13369-015-1776-9