Optimization of CFS sections under flexure using Genetic Algorithm
DOI:
https://doi.org/10.3989/ic.76866Keywords:
Optimization, Rectangular hollow flange section, Genetic Algorithm, EuroCode 3Abstract
Economization of the structural systems by optimizing the elements is the recent trend receiving much attention in structural engineering designs. In this work, a numerical study is made to arrive at the optimal proportions of the cold-formed steel (CFS) Lipped C, Lipped Z, and Rectangular Hollow Flange sections (RHFB) when used as flexural members. Web depth to developed length ratio (k) and the flange width to lip depth ratio (a) are the two parameters taken for this optimization. Genetic algorithm was used to obtain the optimum values. Investigations are carried out on the variation in the moment capacity to the changes in dimensions of web, flange and lip. In this work developed length ranging from 100 mm to 500 mm and thickness of 1 mm to 3 mm were adopted. The moment capacity and buckling behavior of (CFS) sections are verified by non-linear finite element analysis using ABAQUS.
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