how to find thermal analysis and heating in a 3D structure

hello,

i have this image and i need to change it to a STL file, after change it i need to find the thermal analysis for this structre.

the problem is i dont know how to change files from jpg to stl.

and i tried started written the code for another image but the code isn't working

so can you help me

thanks

[tar abu]

if anybody wants to help, you can use another picture and change to an stl

i just want to see how the code work and how i can change files :)

[darova]

YOu can't create an stl file from an image. You can create your own model and convert it to stl format

[tar abu]

hey darova, if you have any model in stl file can u put in the comment below please

the problem is i don't know how to creat my own model so i need a model in stl format to write a code with.

[KSSV]

To create stl file, first you have to mesh it. For meshing you can use pde tollbox. Have a look on it.

Or generate the mesh in external meshing softwares and import it to MATLAB.

Answer 1

[darova]

• Create surface
• Convert it to patch using surf2patch

example

clc,clear

    % main model
[x,y] = pol2cart(deg2rad(-90:10:90),1); % half arc
x = [x+1 -x-1 x(1)+1];
y = [y flip(y) y(1)];
x1 = [x*0; x; 2*x; x*0]';
y1 = [y*0; y; 2*y; x*0]';
z1 = [x*0+1; x*0+1; x*0; x*0]';
    % semisphere
% [x1,y1,z1] = sphere(8);
% z1(z1<0) = 0;
h  = surf(x1,y1,z1);
ff = surf2patch(h,'triangle');          % convert surface to patch
stlwrite('test.stl',ff)                 % write model as stl format
axis equal vis3d