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CAD model import to Comsol

Posted Jun 24, 2020, 9:10 p.m. EDT Low-Frequency Electromagnetics, CAD Import & LiveLink™ Products for CAD Version 5.4 4 Replies

Dongyang Hou
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Hi，I have created a model from CAD , and import to Comsol. As you can see from the figure， there always has a crevice . How can I deal with it？I need your help.

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4 Replies Last Post Jun 27, 2020, 8:46 p.m. EDT
Dennis Brown
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Posted: 4 years ago Jun 25, 2020, 8:22 a.m. EDT
Updated: 4 years ago Jun 25, 2020, 8:33 a.m. EDT

Hello,

try following these two defeaturing links:

https://www.comsol.com/blogs/how-to-inspect-your-mesh-in-comsol-multiphysics/

https://www.comsol.com/blogs/how-to-automatically-remove-small-details-in-your-model-geometry/

Hello, try following these two defeaturing links: https://www.comsol.com/blogs/how-to-inspect-your-mesh-in-comsol-multiphysics/ https://www.comsol.com/blogs/how-to-automatically-remove-small-details-in-your-model-geometry/
Mark Harradine
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Posted: 4 years ago Jun 25, 2020, 8:51 a.m. EDT
Updated: 4 years ago Jun 25, 2020, 8:56 a.m. EDT

Use the "delete entities" command in your Graphics tree and select all surfaces of the crevice. Is the crevice extends to the outside surface of a domain, you can use the "cap faces" command to seal it up and make the domain complete again.

Mark

I forgot to add, if the crevice is very small in comparison with the mesh size in the domain, then use the "form composite faces" feature on the Virtual Operations on the external faces to prevent the mesher from attempting to build elements into the cap of the crevice.

Use the "delete entities" command in your Graphics tree and select all surfaces of the crevice. Is the crevice extends to the outside surface of a domain, you can use the "cap faces" command to seal it up and make the domain complete again. Mark I forgot to add, if the crevice is very small in comparison with the mesh size in the domain, then use the "form composite faces" feature on the Virtual Operations on the external faces to prevent the mesher from attempting to build elements into the cap of the crevice.
Dongyang Hou
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Posted: 4 years ago Jun 27, 2020, 8:42 p.m. EDT

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I will try it，Thanks very much.

>Send Private Message >Flag post as spam I will try it，Thanks very much.
Dongyang Hou
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Posted: 4 years ago Jun 27, 2020, 8:46 p.m. EDT

Hello,

try following these two defeaturing links:

https://www.comsol.com/blogs/how-to-inspect-your-mesh-in-comsol-multiphysics/

https://www.comsol.com/blogs/how-to-automatically-remove-small-details-in-your-model-geometry/

Thanks very much.

>Hello, > >try following these two defeaturing links: > >https://www.comsol.com/blogs/how-to-inspect-your-mesh-in-comsol-multiphysics/ > >https://www.comsol.com/blogs/how-to-automatically-remove-small-details-in-your-model-geometry/ Thanks very much.

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