Reply To: Althought all contacts are bounded, surfaces don’t move together during modal anlysis

[peteroznewman]

Hello Emir,

You want to go into DesignModeler where it will show 4 Parts, 4 Bodies.
Select all four parts, right click and select Form New Part, then it will say 1 Part, 4 Bodies.
The 4 bodies can still have 4 different thickness values.
In Mechanical, Update Geometry from Source, then delete all your contacts, since the mesh will connect these 4 bodies with common nodes at the common edges. This is called Share Topology in DM and this is much better than using contact.

The reason the parts were not connected in your original model is the pinball radius was not large enough to detect the adjacent nodes. Increasing the pinball radius will solve that problem, assuming you have mesh controls to actually create coincident nodes. But you really want the solution in the first paragraph.

Cheers, Peter