International Journal of Engineering Research in Mechanical and Civil Engineering (IJERMCE)

Monthly Journal for Mechanical and Civil Engineering

Volume2,March 2017,

Topic : Effect of Intermediate Web Stiffener on Buckling Behavior of Axially Loaded C-Lipped Cold-Formed Sections

Authors:Sanjay U. Marjive || Dr. Ratnesh Kumar, Dr. L. M. Gupta

Abstract:This paper presents the influence of shapes of intermediate web stiffener for improving critical elastic buckling load of cold-formed steel lipped channels under axial compression. From the literature, it is observed that the influence of variation in shapes of intermediate web stiffener has not been studied in detail. Therefore, in the present study, the effect of variation in S1/b ratio (depth of intermediate web stiffener to the depth of web) for triangular and quadrilateral intermediate web stiffener on lipped channel sections of length varying from 0.5 m to 6.0 m have been considered. The thickness of the steel plate is kept constant as 1.50 mm, whereas, the ratio of the depth of intermediate web stiffener to the depth of web has been varied from 0.03 to 0.36. The members have been analyzed with both ends fixed and allow translation in the lateral direction. The elastic Eigen value buckling analysis has been performed on 300 models by using finite element analysis method. Local and distortional failure modes were observed for critical elastic buckling load. From the study, it has been observed that the effect of intermediate web stiffener decreases for member length larger than 2.5 m due change in mode shape i.e. local to distortional. It has also been observed that with the increase in depth of intermediate web stiffener the buckling load increases. However, as compared to triangular shape the quadrilateral shape intermediate web stiffener imparts larger resistance to buckling..

Keywords: cold-formed steel, intermediate web stiffener, lipped channel, critical elastic buckling load, local buckling, distortional buckling

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DOI: 01.1617/vol4/iss3/pid30612

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Meinhard Taher Schobeiri
Texas A & M University, USA.

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ISSN(Online): 2456-1290

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Thomson Reuters ID : q-6288-2016.
ORCiD Research ID : 0000-0001-9540-6799

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Journal Code : IJERMCE
Electronic ISSN : 2456-1290
Impact Factor : 3.8
Frequency : monthly
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