instability node (type 3)

[Anonymous]

Hi everyone,

How can I fix the warning "instability node (type 3) ?.

I model a building with 6 stories. From the roof to the ground floor. When I model the roof to the 3rd floor, everything is ok, no warning & errors. Then, when I model the 2nd floor, there no have any warning & errors in meshing generation but I got a warning message: " instability node (type 3) and that node on level 5, which no have any warning before.

So that, how can I fix it ?. And how to know the warning message not more affect to the model ?.

Thank you so much!

[Rafal.Gaweda]

File please.

[Anonymous]

Hi Rafa,

I send you two file.

The model L3 to Roof is no any warning & errors

The model Roof to L2 is have only 1 instability node ( type 3 ).

Thanks for your help.

[Rafal.Gaweda · Accepted solution]

Set model generation tolerance as User Defined = 1mm

Generate model

Freeze panels

Run calculations

Fixed model attached