Separation of two volumes having common vertex

Coreform Cubit General Topics
#1

Dear all,

I want to define a contact between two volumes. Both volumes share 4 common vertex but have different surfaces. It means those 4 vertex were used two times to define two surfaces belonging to two volumes.
This contact definition is successful however during the application of load, the surfaces do not break only at those 4 locations. Although, I did not merge anything, those nodes are still not separating because I think due to the definition of same vertex.

Can we somehow break those vertex through a command ? so that there are no more common vertex between the volumes?

Any hint or suggestion ?

regards,

#2

If you know the vertices, you can simply unmerge them using the command:

unmerge vertex <id_range>

If the vertices are shared between surfaces in different volumes, they had to be merged somehow. Here is an example of doing what I think you want:

reset
create surface rectangle width 1
surface 1 copy
sweep surface 1 perpend distance 3
sweep surface 2 perpend distance 3 switchside
create contact region add surface 7 12