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rigid_joint
Posts: 18
Registered: ‎03-15-2012

Simply supported beam and Instability Type 3 issue

163 Views, 1 Replies
01-07-2014 05:29 PM

I set up this simple model (symmetrical panel with uniform load and simply supported beam) and I run it.

 

Instability problem (as it was expected) occurred but what else could I do? I disregard it.

 

 

 

So far, so good. Untill somebody is taking a look a at the panel deformations.

 

 

 

Panel is twisting right.

 

(I know that I can turn the supports into fixed and add pinned releases in beam to bypass the problem but instability type 3 happens quite often and I'm not sure that finally this is a trivial problem)

 

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Artur.Kosakowski
Posts: 4,956
Registered: ‎12-17-2010

Re: Simply supported beam and Instability Type 3 issue

01-07-2014 11:55 PM in reply to: rigid_joint

Instability problem (as it was expected) occurred but what else could I do? 

 

Add the RY restrain at either of supports to prevent the rotation of the model about the global Y axis as indicated in the instability warning.

 

If you find your post answered press the Accept as Solution button please. This will help other users to find solutions much faster. Thank you.

 

 

 

 

 

 





Artur Kosakowski
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