Separate face in converting solid to shell

converting solid part to shell in geometry of CAD is available but all face still connected as single parts. The purpose of converting to shell from solid usually using mid-surface, not a group face of hollowed closed surface or solid. The limitation of mid-surface is not really problems and still usable since CalculiX shell element have offset feature, thicken shell to generate solid element is available in PrePoMax also. However it’s required an option to separate faces by explode or detach all face, so it can be merge by compound later.

Yes, but that’s much more complex to implement so the basic hollowing was added. Abaqus also has it.

However, this is easily doable in CAD software - e.g. Draft Downgrade and Upgrade (or not to keep separated faces) in FreeCAD:

regarding midsurfacing, may the condition is different in the future and PrePoMax capable todo since current versions can detect edge length of thickness during extrussion.

right, it may easy and doable in CAD to explode a solid into group of closed surface. As another thread discussion, user expect to delete or define merge of face group by selecting individually to complement of convert solid to shell feature. It seems this operation is more convenient inside PrePoMax.

The Solid to shell feature was added because the feature shell to solid was needed for some cases. So it currently has no practical use. A feature to delete shell faces is missing to make it at least practical for the thickened shell mesh.

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thanks, explode first when converting make face of shell part separated individually and delete is accessible through menu trees.

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