Inherit Groups during "Partition" in SHAPER

Feature Requests
1

Hi,

I would like to request a feature to retain/inherit Groups (Edges, Faces, Solids) during the Partition operation in SHAPER.

When modeling multi-region problems (e.g., CHT for OpenFOAM), it is intuitively understandable if we define Groups in individual parts. We need edge and face groups for local Sub-mesh control, as well as region volumes and boundary face groups for OpenFOAM patches. However, when we run [Features > Partition] to join them, all preexisting Groups are completely discarded.

This requires us to manually re-create groups on Partition_1_1.
More importantly, if we change any CAD parameter upstream, these manual groups break, which defeats the purpose of parametric modeling.

It would be extremely helpful if the Partition tool had a “Keep Groups” option. Thank you for considering this request!

Best regards, YAsahi

2

Hello,

You can use the feature call “move to the end” to move the creation of the group after the partition.

In the Object Browser, right click the group feature and select “Move to the end”

You can also use “Move to the end and split” to create a new group for each sub-shape.

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3

Hi Fred,

Thank you for teaching me “Move to the end”! It is a great feature for a single part history.

However, my original explanation was insufficient. My actual workflow involves a multi-part structure, as shown in the attached screenshots:

fig1_Import_and_Partition
fig1_Import_and_Partition1920Ă—1989 508 KB

I define edge groups inside individual parts (Cylinder and Elbow). Then, I use [Import Result] to bring them into a new separate Part (CylinderAndElbow) and run [Partition].

fig2_Mesh
fig2_Mesh1920Ă—1989 274 KB

When moving to the MESH module, those upstream edge groups disappear and do not inherit under the mesh node.

Is there any hidden option in ImportResult to retain groups from sub-parts, or is this a current limitation?

Thank you again for your insight!

4

Hello YAsahi,

In fact when you import results, you can see that the group are shown as subnode of the imported results, in fact they are just links to original groups and cannot be edited. This is why in MESH the groups are shown under the results of the parts

So unfortunately, you need to recreate the group after importing the parts, or after the partition.

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