Rigid Body Modes

SOFiSTiK Teddy
1

Hello Everyone

I am trying to get Eigenvalues from the high rise timber structure. I have given fixed support condition in bottom nodes but still i am getting follwing error. [254 rigid body modes in the system ,Please check if all parts of the structure have sufficient constraints despite of the type of loading ! (e.g., beams with hinges for torsion)Equations concerned are]. how do i fix this error? i have attched teddy file also if anyone can fix this error it will be very helpful

Thank you

Teddy Model New.dat (180.6 KB)

Screenshot (19)
Screenshot (19)1920×1080 225 KB

2

Hello Shabbik

A short check of your system shows that all of the edge beams are not connected with the system. Please connect them to the structural areas and / or to the columns.

grafik
grafik1040×713 44.3 KB

FE elements are only connected correctly if they share the same nodes. The visualised cross-section is completely irrelevant for the connection of the components.

grafik
grafik862×573 13.1 KB

A tip for the future:
In order to detect the faulty elements, you can perform a short ASE run.

+prog ase
head
lc 1 facd 1
end

Perhaps start with a small system to understand the modelling workflow.
Here is the link to our beginner tutorial.

Best regards
Frederik Höller
Your SOFiSTiK Support Team

3

Thank you so much for the inputs it fixed the error now.