Import a 2D STL File

Question

Matthias Wölfleder 2019-12-19

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https://ww2.mathworks.cn/matlabcentral/answers/497422-import-a-2d-stl-file

回答： Ravi Kumar 2020-1-2

Hey everyone!

I would like to import a 3D STL file as 2D geometry.

I found something in the MATLAB documentation (https://de.mathworks.com/help/pde/ug/stl-file-import.html) that says "When you import a planar STL geometry, the toolbox converts it to a 2-D geometry by mapping it to the X-Y plane.", but if i create a plot, it is still in 3D.

Here is the code i tried:

model = createpde;

importGeometry(model,'Insole.stl');

pdegplot(model,'EdgeLabels','on')

The 3D Part is an insole which contains several splines, could that be a problem?

I would be happy if someone could help me!

Kind regards,

Matthias

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Answer 1

Ravi Kumar 2020-1-2

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Hi Matthias,

Your geometry in the STL file is indeed 3-D. I am assuming you want just the one of the flat faces for two 2-D analysis. To do this you need to export just that face as STL. I do not know the option in Autodesk to do so, but typically if you have the CAD in STEP format then you can select a particular face and save just that into to STL file.

Regards,

Ravi

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Answer 2

Ravi Kumar 2019-12-19

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The keyword here is "planar". Is your geomtry planar?

Regards,

Ravi

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Answer 3

Matthias Wölfleder 2019-12-20

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Insole.zip

Thank you for your answer!

Maybe i misinterpreted the word planar. My geometry is a simple flat extrusion from a draft as you can see in the attachment. I used Autodesk Inventor to create this, but there seems no opportunity to create a planar surface .stl in Inventor. Is there any other way to import just the 2D draft into Matlab?

Regards,

Matthias