In order to complete the modeling quickly and effectively, the following procedure is possible.
In the example, a simple lug is modeled. The start of this lug was a surface with two holes; this surface (also without openings) is copied.
If you select both surfaces, you can right-click to select the "Create solid with contact ..." option. Finally, the contact volume is converted into a regular volume with, for example, isotropic material behavior. Double-click the solid to open the volume dialog box where you can change the type to "Material".
The complete procedure is shown again in the corresponding video
Knowledge Base