function [Minc2]=subMinc2(u)
Minc2=zeros(4,4);
Minc2(1,1)=-1;
Minc2(2,1)=1; Minc2(2,3)=-1;
Minc2(3,2)=1; Minc2(3,4)=-1;
Minc2(4,1)=1; Minc2(4,2)=-1;
% Barra 1 = SA
% Barra 2 = SB
% Barra 3 = m
% Barra 4 = p
% Elemento 1 = G-SA(zs2)
% Elemento 2 = SA-m
% Elemento 3 = SB-p
% Elemento 4 = SA-SB(zps)
e-REdING. Biblioteca de la Escuela Superior de Ingenieros de Sevilla.
