function C2 = std2fem(C1)
%C2 = std2fem(C1)
%prevede matici elastickych koeficientu ze standardniho tvaru do tvaru pro
%software Comsol Multiphysics
 P  = ...
 [1 0 0 0 0 0;0 1 0 0 0 0;0 0 1 0 0 0;0 0 0 0 1 0;0 0 0 0 0 1;0 0 0 1 0 0;];
 C2 = P'*C1*P;
end
