Learning Forum

[lsalvucci]

In the physics step, I need to section my geometry to apply pressure loads to internal surfaces and I cannot find the command. The internal geometry is complicated, so the overlapping features selection tool is not good enough for this task.

Thank you

[glyn.jarvis]

Some ways of achieving this are:

- Modelling has some additional selection tools, you can edit your geometry and then use the selection tools there to create groups, which will be translated into selection sets when you return back to physics

- Select more than you need with box select (dragging left to right or vice versa to change if you have to fully enclose a face in your selection), then hold down ctrl and deselect faces you don't want to include

- a safer variation on the above is to add it to the location, and then click in the location so it becomes selected and then deselect before using the "replace" selection button.

- select faces in groups and use the "add to" selection button to build up your selection gradually, possibly while using hide and show bodies/faces to help selection.

- this one is a bit more creative.... In modelling, create an internal volume extraction, then use the contact detection tool to create contacts, then use the contact detection to get the faces on the side of the geometry that you want.  Then remove the extracted volume from the physics region (if it represents a fluid, you can still assign a material to it to get "life-like" rendering when presenting results, or maybe it's appropriate to perform a FSI calculation to compute the pressure loads).

I hope this helps

Glyn.

[lsalvucci]

Kind of astonished to find a CAE software that does not make cross-sections, but thank you.