Instability of nodes Type 3

[Anonymous]

Hey

I have a problem with Instability of a node(type 3) in the middle of a plate. I have run a Skyline and frontal solution. The deformationes look correct and as expected.

I would like to know if some one can help me with a solution.

Best regards

Thomas

[Artur.Kosakowski · Accepted solution]

The combination of releases, pinned supports and orthotropic panel thickness.

You may consider the following:

1. Delete defined RZ supports

2, Block RZ in the defined pinned supports

3. Block RX in the definitions of pinned - pinned releases (you may add them or partial RX releases for bars where MX is too large)

4. Increase stiffness of the weak direction of the slabs to e.g. 0.1 of the main one

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