Reply To: Contact between steel and concrete in a circular concrete-filled steel tube

[Andreyteston]

Hello, peteroznewman!

Before all, I would like to say that I am really a fan that your work here in this community. Thank you for your contribution!

I got it to specify the number of elements on the edge so they are coincident. I going to use the command "nummrg" for the contact between the internal surface of steel and the external surface of the concrete. 

When I have to merge coincident or equivalently nodes, I have been receiving this warning: "After NUMMRG,NODE, node 151 (and possibly others) is associated with more than one solid model entity.  Future commands which depend on the node to solid model connectivity (meshing, mesh clearing, solid boundary condition transfer, etc.) may not operate properly. NUMMRG,KP may correct this problem."

1) Should I worry about that?

2) Knowing that I will use remaining nodes to connect a mechanism to apply displacements and restriction. I have doubts about that too, so, I have created this topic here and I wonder if you could help me with this.

Regards.