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CAD model import to Comsol

Posted 24 juin 2020, 21:10 UTC−4 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 27 juin 2020, 20:46 UTC−4
Dennis Brown
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Posted: 4 years ago 25 juin 2020, 08:22 UTC−4
Updated: 4 years ago 25 juin 2020, 08:33 UTC−4

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 25 juin 2020, 08:51 UTC−4
Updated: 4 years ago 25 juin 2020, 08:56 UTC−4

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 27 juin 2020, 20:42 UTC−4

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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 27 juin 2020, 20:46 UTC−4

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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