How can I convert section of 3D mesh to 2D mesh?

YeongRak · 2025-06-13T16:57:51+00:00

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YeongRak

Hello everyone,

I have a difficulty to convert section of 3D mesh into 2D mesh.

Let me explain my situation.

I have a 3D tetrahedral-meshed model and I'm performing analysis on specific section.

But since I have many DOE, I often need to modify the mesh.

I think It is more easier to performing analysis using a 2D simulation.

But I don't know exactly how to convert a specific section of 3D mesh into 2D mesh.

Please let me know how to do this.

Thank you!

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v2021

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Jason_Craanen

Hello,

I am not sure there is anyway to "convert" a 3d mesh to 2d mesh.

But I would recommend looking at Midmesh for extracting a mesh from the 3d topology

https://help.altair.com/hwdesktop/hwx/topics/pre_processing/meshing/midmesh_generation_c.htm

YeongRak

Sorry. Maybe, My inquiry was unclear.

Well… Here is the example image from web.

if I want to get a 2D drawing(mesh or just outline of each components) of specific section from a 3D Tetrahedral-meshed files, Is it possible in the Hypermesh 2021?

Thank you,

Jason_Craanen

I am sorry, I am still not following you. Are you looking to extract the surface mesh?

https://help.altair.com/hwdesktop/hwx/topics/pre_processing/model_setup/free_faces_find_t.htm?zoom_highlight=faces

Or extract a section cut?

You could use this tool to make the section cut and extract the sketch to be used for meshing

https://help.altair.com/hwdesktop/hwx/topics/pre_processing/meshing/beamsections_create_t.htm?zoom_highlight=beam+section