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cohesive section definition requirements

cohesive section definition requirements

cohesive section definition requirements

(OP)
Hi, everyone

Now I'm studying the Interface Delamination Analysis of Double Cantilever Beam. And I use czm to simulate the crack behavior of interface. This model is a 2D model. When I tried to merge nodes of interface together, the warning message showed up.

*** WARNING *** CP = 35.531 TIME= 22:09:50
After NUMMRG,NODE, node 2 (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.

So I checked the help manual, it said I need to add nummrg, kp, after nummrg, node. But it failed again. I also tried to use add or glue. They failed.

I know that inter 20x elements are just for 2 bodies having coincide but separate nodes. So I want to merge the nodes of interface.

Does anyone can tell me why the message showed up? How to fix it?

I really appreciate your help.

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