Experimental Study on Behaviour of Stiffened Cold Formed Steel Built Up Hat Section under Flexure by Varying the Depth by Finite Element Analysis

  IJETT-book-cover  International Journal of Engineering Trends and Technology (IJETT)          
  
© 2015 by IJETT Journal
Volume-23 Number-1
Year of Publication : 2015
Authors : V.Jaya sheela, R.Vijayasarathy, B.Jose Ravindraraj
DOI :  10.14445/22315381/IJETT-V23P207

Citation 

V.Jaya sheela, R.Vijayasarathy, B.Jose Ravindraraj "Experimental Study on Behaviour of Stiffened Cold Formed Steel Built Up Hat Section under Flexure by Varying the Depth by Finite Element Analysis", International Journal of Engineering Trends and Technology (IJETT), V23(1),30-39 May 2015. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group

Abstract
Cold-formed steel is used for many applications in construction of Industrial building. In this experimental work aims at the study of behaviour of built-up hat section with stiffened web and stiffened tension flange under flexure. The finite strip analysis program CUFSM is used to calculate the section and buckling properties of the hat section. Based on these results the cross section and dimensions of the built up section was arrived at and used in this investigation. The flexural tests were conducted on four specimen’s built-up hat section with stiffened web and stiffened tension flange. The Data acquisition system with Load cell, Strain Gauge and LVDT are used to record the load, strain and deflection measurements. The numerical simulation of the built up section was performed using Finite element Software ANSYS 12.0. SHELL elastic 4 node 63 elements were used and non linear multi elastic behaviour was considered. In theoretical calculations, strength of beams are calculated using Indian Standard IS: 801-1975, BS 5950-1998 (5). The experimental results are compared with theoretical and numerical analysis results. It is observed that this built up section could be used as a flexural member in structures subjected to light and moderate loads.

 References

1.Hancock, G.J., Merrick, J.T., and Bambach, M.R., (1998), “Distortional BucklingFormulae for Thin Walled Channel and Z-Sections with Return Lips,” Proceedings of the Fourteenth International Specialty Conference on Cold-Formed Steel Structures, St. Louis, MO., October 15-16.
2.Hancock, G.J., (1985), “Distortional Buckling of Steel Storage Rack Columns,” Journal of Structural Engineering, ASCE, Vol. 111, No. 12, pp. 2770-2783.
3.Hancock, G.J., (1994), “Design of Cold-Formed Steel Structures (to Australian Standard.
4. AS 1538-1988) 2 nd Edition,” Australian Institute of Steel Construction, Sydney, Australia, pp. 38.
5.Hancock, G.J., (1997), “Design for Distortional Buckling of Flexural Members,” Thin-Walled Structures, Vol. 27, No. 1, pp. 3-12.
6. Hancock, G.J., and Lau, S.C.W., (1986), “Distortional Buckling Formula for Thin-Walled Channel Columns,” Research Report No. R-521, School of Civil and Mining Engineering, University of Sydney, Sydney, Australia.
7. Hancock, G.J., and Lau, S.C.W., (1987), “Distortional Buckling Formulas for Channel Columns,” Journal of Structural Engineering, ASCE, Vol. 113, No. 5, pp.1063- 1078.
8. Hancock, G.J., and Lau, S.C.W., (1990), “Inelastic Buckling of Channel Columns in the Distortional Mode,” Thin-Walled Structures, Vol. 10, pp. 59-84.
9.Hancock, G.J., Rogers, C.A., and Schuster, R.M., (1996), “Comparison of the Distortional Buckling Method for Flexural Members with Tests,” Proceedings of the Thirteenth International Specialty Conference on Cold-Formed Steel Structures, St. Louis, MO, October 17-18.
10.Hancock, G.J., (1998), Design of Cold-Formed Steel Structures, 3 rd Edition, Australian Institute of Steel Construction, North Sydney, Australia.

Keywords
Built-up hat section, CUFSM, flexural test, Finite element Analysis.