%Main Program
% file name column_opt.m
% optimization of tubular steel column with eccentric loading
% Prof. Reyolando Brasil 2021
clear
clc
% options
options=optimset('LargeScale','off','TolCon',1e-8,'TolX',1e-8);
% limits of design variables, thickness and radius
Lb=[0.01 0.005];Ub=[1 0.2];
% initial design
x0=[1 0.2];
% call the constrained optimization routine
[x,FunVal,ExitFlag,Output]=...
    fmincon('column_objf',x0,[],[],[],[],Lb,Ub,'column_conf',options)
%