IJRET: International Journal of Research in Engineering and Technology eISSN: 2319-1163 | pISSN: 2321-7308 _______________________________________________________________________________________ Volume: 04 Issue: 04 | Apr-2015, Available @ http://www.ijret.org 517 COMPARATIVE STUDY OF BEHAVIOUR OF COLD-FORMED STEELAND HOT ROLLED STEEL SECTION UNDER COMPRESSIVE LOADING Salokhe S. A 1 , Patil P. S 2 1 M. Tech Scholar, Civil Engineering Department, R. I. T., Sangli, Maharashtra, India 2 Professor of Civil Engineering Department, R. I. T., Sangli, Maharashtra, India Abstract Cold-formed steel is used in large number of products. For example in metal building construction, for wall coverings, floor decking etc. Cold-formed steel is a basic component in construction of lightweight prefabricated structures like stud frame panels, trusses and portal frames.The Cold formed steel term itself make it different from hot rolled steel due to difference in manufacturing methods. Typically columns, beams and angles etc. are different globally. At room temperature cold formed steel members are formed by bending flat sheets. Cold formed steel sections mainly created using two methods those are break press through and rolling. Where hot rolled steel members are precasted. Therefore cold formed steel sections can be easily available at any place where hot rolled sections are not available. The cold formed steel components can be used for larger and complex structures. The Comparison of cold formed steel section and Hot rolled steel section of equal cross sectional area is done in this research paper. Sections were experimentally tested under axial compression in universal testing machine. Simultaneously, ultimate compressive strength of cold formed members and hot rolled members has been investigated. Also, different properties of the sections such as stresses induced in the sections, strain in the section, axial deflection, and lateral deflection are obtained experimentally. For measuring strain experimentally strain gage foils were used. The validation of results is done by preparing finite element model in ABAQUS software. From experimental work it is observed that cold formed steel sections has more load carrying capacity as compared to hot rolled steel section. Keywords: Ultimate compressive strength, buckling, cold formed steel, deflection, stress, strain, ABAQUS --------------------------------------------------------------------***---------------------------------------------------------------------- 1. INTRODUCTION The use of cold formed steel as a structural member is started recently in the pre-engineered building design method. In structural industry products such as wall cladding, purlins are created using light gauge steel. The acceptance of cold formed steel as a structural material is limited because there is no adequate design method and limited information on use of material. Most important difficulty in cold formed steel design is prevention of buckling of member. Due to its low thickness Fig -1: Details of Cold formed steel section to width ratio, member buckles before the yield stresses occur during the compression of short column. Mainly it fails in elastic buckling mode. It is then classified as overall, distortional and local buckling. Further it is classified as flexural, torsional and flexural-torsional buckling. It is expected that member buckles at lower stress value than yield stress value. Therefore buckling behavior is most important in design of cold formed steel members, which is opposite form of behavior of hot rolled steel members. Fig -2: Built up I section of Cold formed steel 2. EXPERIMENTAL WORK AND CALCULATION Paragraph comes content here. Paragraph comes content here. Paragraph comes content here. Paragraph comes content here. Paragraph comes content here. Paragraph comes content here. Paragraph comes content here.