Author Topic: How to export a Solid.  (Read 342 times)

placasse

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How to export a Solid.
« on: April 20, 2017, 06:29:50 PM »
Hi,

  I need to convert an stl (list of triangles) file into a solid mesh (list of tetrahedra) suitable for finite element methods.
I would be happy with any human-readable file format.
I tryed many softwares (not all of them yet) and MeshMixer is the first one I found that can build such a mesh (Edit->Make Solid) with my huge and complicate file.

The result looks good, now I need it outside of MeshMixer.
I tested all the export but I can't see any tetrahedra in the resulting file, did I missed something?

thanks

tysonbrochu

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Re: How to export a Solid.
« Reply #1 on: April 21, 2017, 05:51:54 PM »
Hi,

Unfortunately Make Solid does not produce a tetrahedral mesh. It only closes open boundaries (i.e. produces a closed, manifold mesh which can be interpreted as representing a solid volume, hence the name "Make Solid").

If you're comfortable compiling C++ code and don't care about adaptive tet sizing, I recommend the quartet library (https://github.com/crawforddoran/quartet). It has a permissive license and is pretty straightforward to use.


T.

placasse

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Re: How to export a Solid.
« Reply #2 on: April 26, 2017, 12:06:10 PM »
Merci M. Brochu,

  I will certainly try this quartet library.
I also have access to some AutoDesk professionnal products, could AutoCad or  Inventor help me?