Panels supported by steel column but not connected

[tngv75955631]

I model the precast concrete panels spanned from a steel column to a steel column. The panel is connected to the columns by 3 point but not connected to the other panels. But when I do mesh, all the panels and column are connected by many points along the column. I think this is because it happen at the same coordinates so the panels and column are connected together.

I wonder if Robot have any function to split these panels which is not connected and the panel are connected to the steel column by 3 points only

[Rafacascudo]

any pics??

[bauskas]

As far as it concerns the plates, a quick and dirty solution (which is, alas, frequently the case with Robot) is, to my understanding, to introduce compatible nodes to locations where connections should be suppressed.

Please attach your model for more detailed analysis. Perphaps playing a bit with meshing options could do the trick. The "stickyness" of FEs in Robot is a well-known issue, sometimes to an advantage of the user and sometimes to a disappointment.

[tngv75955631]

Robot file is attached. This is for modelling of a precast building with steel portal frames.

[tngv75955631]

I try to use compatible node and linear release in the pnael but they don't work.

[Marios]

Compatible nodes won't do any good. Leave a gap of some cm between panels and linear members and then connect the 3 points you mentioned through a rigid link with the panel.

[bauskas]

OP, having seen your model, I agree that compatible nodes are basically useless here.
You have to introduce geometric gaps between the elements as Marios suggests. This is the case where you have to abandon actual accuracy of the model to get it over with. This is the case where Robot is smart enough to do no help but significant damage.

[tngv75955631]

You mean that I have to create very small gaps between the panels and these panels connect to the column by 3 rigid links ?

Why don't we release the common nodes betwwen the panel ?

Marios, you mean that I have to run a rigid link between the panels and release the rotation in the rigid link. These pnaels and rigid link are connected to steel column by 3 points ?

[Marios]

A rigid link or linear member i think will do the job.
I think you meant that those panels are connected in three points with the columns. If this is the case yes you should connect them in those points.

Also i don't think it's possible to release any d.o.f. of the nodes of the finite element mesh.