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Graph ploting

Benjamin Ivasovic

Posted 10 years ago

Hi, I need help with plotting a graph. I have expression and i need to plot a graph, but I do not know how to do it. My expression is: w = 3.3642910^-9 (-1500 + x) + 0.012242 E^(-0.0428469 x) Cos[0.0428469 x] (0.000818033 + 0.308311 Cos[\[CurlyPhi]]) + (-0.844704 Cos[\[CurlyPhi]] - 1.4078410^-6 (-1500 + x)^2 Cos[\[CurlyPhi]])/2100 - 0.000524531 E^(-0.0428469 x) (0.00947115 + 3.55308 Cos[\[CurlyPhi]]) (Cos[0.0428469 x] - Sin[0.0428469 x]) This is function of displacement over a cylindrical shell. This probably should be a 3D graph, and i do not know how to do it. Please help.

Hi, I need help with plotting a graph. I have expression and i need to plot a graph, but I do not know how to do it. My expression is:

w = 3.36429*10^-9 (-1500 + x) + 
 0.012242 E^(-0.0428469 x)
   Cos[0.0428469 x] (0.000818033 + 
    0.308311 Cos[\[CurlyPhi]]) + (-0.844704 Cos[\[CurlyPhi]] - 
  1.40784*10^-6 (-1500 + x)^2 Cos[\[CurlyPhi]])/2100 - 
 0.000524531 E^(-0.0428469 x) (0.00947115 + 
    3.55308 Cos[\[CurlyPhi]]) (Cos[0.0428469 x] - Sin[0.0428469 x])

This is function of displacement over a cylindrical shell. This probably should be a 3D graph, and i do not know how to do it.

Please help.

POSTED BY: Benjamin Ivasovic

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Bruce Miller

Bruce Miller, Wolfram Research

Posted 10 years ago

Are x and Phi the independent variables? Are you picturing cylindrical coordinates, or would cartesian work? Suggestions for formatting posts are at http://community.wolfram.com/groups/-/m/t/270507 .

POSTED BY: Bruce Miller

David J M Park Jr

Posted 10 years ago

POSTED BY: David J M Park Jr

Benjamin Ivasovic

Posted 10 years ago

I add to attachment my code till now. In .nb file you will see picture that is similar to my problem, load distribution under a). Now I will explain problem that I need to solve: long cylindrical shell is loaded with self weight and wind load (similar to picture, except there is no fluid inside) I have to solve displacement (w) and twist (?) along the height of cylinder (x coordinate). Wind load distribution is equal p(?)=-p0cos(?) ?[0,2Pi]. This is why i 2D graph does not show all needed data, for example for x=0 ? changes from [0,2Pi]. I would like to have this solved in Cartesian coordinate system. And if you can show me how to function p(?)=-p0cos(?) i can transform in cartesian coordinate system so i have this load depended on y,z coordinates (like in picture under a)). Thanks Attachments:

POSTED BY: Benjamin Ivasovic

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