Call For Paper Volume:5 Issue:7 Jul'2018 |

Experimental Analysis of Cold Formed Light Gauge Steel Structural Compression Member by Improving Distortional Strength under Compression

Publication Date : 15/03/2018


DOI : 10.21884/IJMTER.2018.5061.HQMZZ

Author(s) :

Diptikar Behera , Seleshi Tilahun , Sintayehu Assefa.


Volume/Issue :
Volume 5
,
Issue 3
(03 - 2018)



Abstract :

Steel is the most versatile commonly used structural material. Structural steel is used in load – bearing frames in buildings and as members in trusses, bridges and space frames. Cold-Formed Steel sections are defined as structural members cold formed to shapes in a rolling mill or press – brakes from carbon or low – alloy steel sheets or strips or flats. Cold formed steel sections are made from light gauge steel strips generally not thicker than 12.5 mm. Open cross sections are subjected to multiple modes of buckling as distortional, flexural and flexural – torsion buckling since the shear center does not coincide with the center of gravity such sections. From the available literature, it is observed that the studies on the behavior of thin-walled open cross section are very minimum. The present paper work aims at the study of buckling behavior of open web open cross section under compression. Introduction deals with the general idea about cold formed steel members, problems on investigation need for this research, objective of the investigation, geometrical cross section of the specimen, methodology and scope of the thesis. Literature review details with the review of the literature on torsional – flexural buckling, Distortional buckling, Rack Columns and cold formed members and Open web sections. Expressions for distortional buckling stress & flexural torsion buckling stress will be obtained for mono symmetric open cross section compression members. Four test specimens will be fabricated with geometry of Rack Section Column with various thicknesses and will be experimented. Buckling stresses which will be obtained from experiments will be compared with theoretical buckling stress. The theoretical results are compared with the experimental results. Design for maximum Limit strength of columns using Limit State Design (LSD) by British Standard (BS 5950 Part V) will also be presented. Results and discussion presents the results of work done, Comparison with theoretical &experimental results will be given the final conclusion of this research. Design method using BS method and also will be concluded from the investigation.


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Experimental Analysis of Cold Formed Light Gauge Steel Structural Compression Member by Improving Distortional Strength under Compression

March 8, 2018