A Novel Design Procedure for Optimal Design of CFS Compression Members

A Novel Design Procedure for Optimal Design of CFS Compression Members
Authors : Abhishek Raj Sachan, Ankit Agrawal, Arpit Kochar
Publication Date: 03-12-2015


Author(s):  Abhishek Raj Sachan, Ankit Agrawal, Arpit Kochar

Published in:   International Journal of Engineering Research & Technology

License:  This work is licensed under a Creative Commons Attribution 4.0 International License.

Website: www.ijert.org

Volume/Issue:   Volume. 4 - Issue. 12 , December - 2015

e-ISSN:   2278-0181

 DOI:  http://dx.doi.org/10.17577/IJERTV4IS120051


This paper presents a novel design procedure for optimal design of lipped channel CFSa compression members under simply supported condition. The design is based on Effective Width Method (EWM) as specified in AISI S 100 2013 (North American Specification for the design of Cold-Formed Steel Structural Members). The length of the compression member is taken as 1200 mm and the sections dimension parameters are varied for web depth (dwb) 50-210 mm, flange (bFc) from 25-50 mm and lip length (bLd) can be chosen from 0.4 - 0.6 times the width of the flange. The methodology adopted in this paper for the design is firstly to develop a MATLAB coding based on the column strength curve of EWM for various buckling failures like local, distortional, global and local+global interaction mode. Then, the failure loads and stresses obtained from the MATLAB coding is analysed to interpret the dependence between failure load, stresses and the geometrical properties of the section. Based on the interpretation made an easy and optimal design procedure is been proposed, also the results obtained from this novel design procedure is validated through Direct Strength Method (DSM).


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