function [Minc1]=subMinc1(u)
Minc1=zeros(4,4);
Minc1(1,1)=-1;
Minc1(2,1)=1; Minc1(2,3)=-1;
Minc1(3,2)=1; Minc1(3,4)=-1;
Minc1(4,1)=1; Minc1(4,2)=-1;
% Barra 1 = SA
% Barra 2 = SB
% Barra 3 = m
% Barra 4 = p
% Elemento 1 = G-SA(zs0)
% Elemento 2 = SA-m
% Elemento 3 = SB-p
% Elemento 4 = SA-SB(zps)
e-REdING. Biblioteca de la Escuela Superior de Ingenieros de Sevilla.
