%file name = plate_obj.m
%optimization of simply supported rectangular steel plate
%uniformly loaded and own weight
%design variable thickness x, m
%objective function
%Prof. Reyolando Brasil - May 2021
function f=plate_obj(x,Prob_data)
a=Prob_data(1);%lenght in x direction, m
b=Prob_data(2);%lenght in y direction, m
rho=Prob_data(4);%steel density, kg/m³
%objective function, the plate total mass, kg
f=rho*a*b*x;
%