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View Full Version : From *.stl files to parasolid using ICEM and ANSYS 12.1



tweber
04-20-2011, 04:27 AM
Hi Everyone,

I am relativly new to ICEM and ANSYS. What we are trying to do is to get from mesh files to the original geometry from that the mesh has been retrieved. We established a workflow like that:

- put a *.stl file into ICEM
- Use ICEM for mesh operations etc.
- Save the Mesh from ICEM
- Import it in the FE - Modeler
- create skin - components in the FE - Modeler
- retrieve a parasolid file from the skin components
- connect FE - Modeler with Design - Modeler so we can influence the geometry and parameterize it

Sorry for not using the proper "ANSYS" Words, since we are located in Germany our Software is in German.

The workflow works for a simple *.stl file that we have drawn using CAD - Software (shaft: 10mm diameter;50mm length). However if it comes to more complex geometry (like cutting holes in the shaft) the FE-Modeler fails to reproduce the original geometry.

So I was wondering:

- On what do we have to focus if it comes to the mesh? (i mean it shhould be closed and all that?)
- What is the proper file-format to exchange a mesh from ICEM to the FE - Modeler
- Do we have to sew all the components together? (i think yes, but sometimes i have the feeling it doesnt matter?)
- Where are the nuts and bolts? What are the best parameters to "use" in order to get everything right?

I know this might be very general questions, but all help would be appreciated. If any further Information is needed just let me know, i will provide you with everything that i can. We know that it works somehow, we just didn't figure out how up to now.

And one more thing:

The "create skin components" command does work pretty well if we did the following:

- Use the "Edit --> facets to mesh" command (i get why we should use that)
- influence mesh
- Use "Edit --> mesh to facets" command
- Use "Edit --> facets to mesh" command

I don't get why the last two steps are important in order to get a mesh that we can use in the FE - Modeler. Any Explanation?

Well, i hope to get some response from all of you. In addition this might be helpful for not just us but for other people as well. I found stuff regarding this question on the web, but nothing to particulary answer these questions. As said before, all help would be appreciated. I am completly new to this forum so please be kind if i messed anything up or so.

With the best regards from Germany,

Tim