Truss Structure Plotting A truss structure is defined with t

Truss Structure Plotting A truss structure is defined with the following matrices. E Nodes = [1 2 2 3 3 4 1 3 1 4], x node = [0 5 0 0 5 0 0 10 0], IBC = [0 1 0 0 1 1 1 1], and VBC =[0 0 0 0 0-100 100 0] Plot truss members with lines, and label them with numbers. Plot nodes with circles and label them with numbers. (Radius of circle is 0.3) Your figure will look like the figure given below. You can use either an automated code or manual code for plotting. You do not need to show boundary conditions.

Solution

Enodes = [1 2;
2 3;
3 4;
1 3;
1 4];
xNodes = [0 5;
0 0;
5 0;
10 0];
xunit = 0;
yunit = 0;
for i = 1 : length(xNodes)
hold on
th = 0:pi/50:2*pi;
xunit = 0.3 * cos(th) + xNodes(i,1);
yunit = 0.3 * sin(th) + xNodes(i,2);
h = plot(xunit, yunit);
text(xNodes(i,1),xNodes(i,2),[num2str(i)]);
hold on
end

for i = 1 : length(Enodes)
p1 = Enodes(i,1);
p2 = Enodes(i,2);
x = [xNodes(p1,1),xNodes(p2,1)];
y = [xNodes(p1,2),xNodes(p2,2)];
mex = 0.5*x(1,1)+0.5*x(1,2);
mey = 0.5*y(1,1)+0.5*y(1,2);
plot(x,y)
text(mex,mey,[num2str(i)]);
hold on;
end