Code runs but no graphical output

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Peter Bohlen
Peter Bohlen 2023-12-1
评论： Peter Bohlen 2023-12-1
Ran in:
I am trying to plot the deflection of a beam using MATLAB. My code runs but there is no output on my graph. I am using "for" operation rather than an array, because the array was producing errors. The code is as follows:
E = 200000; % Young's Modulus in N/mm^2
I = 416.667; % Moment on Inertia in mm^2
P = 600; %Applied force in N
Q = 1200; %Applied force in N
L = 3000; %Length of Beam in mm
b = 1000; %Applied location in mm for 600 N
a = 2000; %Applied location in mm for 1200 N
for x=0:10:3000
V = ((-P * b .* x) / (6 * E * I * L)) * (L^2 - b^2 - x.^2) + (((-Q * a .* x) / (6 * E * I * L)) * (L^2 - a^2 - x.^2));
end
plot (V,x)
xlabel 'Distance (mm)'
ylabel '(Deflection mm)'
I have attached a picture of the graph as well as the MATLAB script. Any assistance would be much appreciated!

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采纳的回答

Walter Roberson
Walter Roberson 2023-12-1
Ran in:
E = 200000; % Young's Modulus in N/mm^2
I = 416.667; % Moment on Inertia in mm^2
P = 600; %Applied force in N
Q = 1200; %Applied force in N
L = 3000; %Length of Beam in mm
b = 1000; %Applied location in mm for 600 N
a = 2000; %Applied location in mm for 1200 N
xvals = 0:10:3000;
num_x = length(xvals);
for xidx = 1 : num_x
x = xvals(xidx);
V(xidx) = ((-P * b .* x) / (6 * E * I * L)) * (L^2 - b^2 - x.^2) + (((-Q * a .* x) / (6 * E * I * L)) * (L^2 - a^2 - x.^2));
end
plot (xvals, V)
xlabel 'Distance (mm)'
ylabel '(Deflection mm)'

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