When I try to 3d plot the code, the plot comes out empty what should I add to fix this problem

2016 9 7
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更新时间：2016 9 8
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F = [-40:20:40];
x = 0.1:0.8;
y = 0.1:0.4;
sigma_p = @(x,y) F/(.8*x*y);
sigma_mx = @(x,y) (F*y)/(1/12*(x)*(y)^3);
sigma_my = @(x,y) (F*x)/(1/12*(y)*(x)^3);
sigma_net = @(x,y) sigma_p(x,y) + sigma_mx(x,y) + sigma_my(x,y);
figure
plot3(x, y, sigma_net(x,y))

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Bekay.Kang
Bekay.Kang 2016-9-8

0 个投票

To Mohsen
Actually, I don't know what exactly you want to do. But There are some problems in your code such as variable dimension(size), matrix(array) calculation...
check this out. hope this will be helpful for you.
F = [-40:20:40];
x = linspace(0.1,0.8,length(F));
y = linspace(0.1,0.4,length(F));
sigma_p = @(x,y) F./(.8.*x.*y);
sigma_mx = @(x,y) (F.*y)./(1./12.*(x).*(y).^3);
sigma_my = @(x,y) (F.*x)./(1./12.*(y).*(x).^3);
sigma_net = @(x,y) sigma_p(x,y) + sigma_mx(x,y) + sigma_my(x,y);
figure
plot3(x, y, sigma_net(x,y))

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