Sixteen cold-formed steel channel columns with different combinations of edge and web stiffeners under axial compression forces up to failure were numerically investigated using finite element (FE) analysis program, ANSYS. The behavior characteristics; the ultimate load, stiffness, ductility and energy absorption have been selected and separately analyzed in relation to column parameters. To determine the single-performance optimization of each characteristic, Taguchi method was applied. The multi-performance optimization was also investigated using Taguchi method coupled with grey relational analysis to achieve the favorable column characteristics and to investigate the multiple-performance characteristics index of each column. The results indicated that for multi-response and a single response, the predicted results are confirmed and the errors in the predicted values using the Taguchi method with respect to the numerical values using ANSYS are acceptable and also they indicated that broken straight line web stiffener factor (WS3) was the highest contributing parameters for variation of the ultimate load of CFS columns.

中文翻译：

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冷弯型钢槽钢柱的优化

使用有限元 (FE) 分析程序 ANSYS 对 16 个在轴向压缩力下具有不同边缘和腹板加强筋组合的冷弯钢槽钢柱进行了数值研究。行为特征；选择了极限载荷、刚度、延展性和能量吸收，并根据柱参数分别进行了分析。为了确定每个特性的单性能优化，应用了田口方法。采用田口方法结合灰色关联分析法对多性能优化进行了研究，以获得有利的柱特性，并研究了每根柱的多性能特征指标。结果表明，对于多响应和单响应，