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bjornhgr
Posts: 69
Registered: ‎09-28-2011

Execution problem no. 3060 in modal analysis

2212 Views, 2 Replies
12-05-2011 12:42 AM

I've modeled a two story building with steel columns, beams, concrete floors and cross bracing. Static analyses, with and without static loads, run perfectly well. However, when I attempt a modal analysis, I get "Execution error no. 3060".

 

Any ideas as to what might cause this?

 

 

 

 

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Rafal.Gaweda
Posts: 5,604
Registered: ‎04-26-2010

Re: Execution problem no. 3060 in modal analysis

12-05-2011 01:21 AM in reply to: bjornhgr

Hi

 

Usually it is related to ignored instabilities in model.

Correct model to get rid of instabilities.

If it is not the case please update this thread.



Rafal Gaweda
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KONSTANTINOS1982
Posts: 2
Registered: ‎03-13-2012

Re: Execution problem no. 3060 in modal analysis

04-25-2012 06:00 AM in reply to: bjornhgr

Possibly, you would have instability warnings first...that's because of the x bracing middle node is considered to have plane DOF but in "3D" or "Building Module" you add the out of plane displacement where the stiffness matrix becomes 0. Possible solutions...support the out of plane displacement only @ middle x node ...

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