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instability (of type 1) at node RZ direction

2 REPLIES 2
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Message 1 of 3
jhilme08
2312 Views, 2 Replies

instability (of type 1) at node RZ direction

Hi,

I've been playing arround with robot for a school project, trying to analyse a simplified structural model I've made of the Downland gridshell building located in Sussex.

 

I'm getting instabillity warnings, and useless results when I press calculate, and being a beginner I've struggled to figure out what the problem might be.

Changing the releases and supports, didn't do anything, so I'm running out of good ideas. I hope some of you guys may be able to help?

 

Kind regards, Jacob

2 REPLIES 2
Message 2 of 3
Rafal.Gaweda
in reply to: jhilme08

Caused by releases.

You have applied releases to all bars making all of them truss bars so the whole model is unstable.

Correct or remove releases.



Rafal Gaweda
Message 3 of 3
jhilme08
in reply to: Rafal.Gaweda

Thank you.

It solved the problem even though I thought I've allready tried it.

 

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