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georgimonew
Posts: 6
Registered: ‎04-09-2012
Accepted Solution

problem with releases in 3d model

172 Views, 2 Replies
12-16-2012 07:16 AM

Hi! I would like to ask about the instability problem which occurs in this model. And how in fact i should design releases in the model particularly where adjoing bars at node  are more than 2 (node 48, node 46). Thanks in advance.

 

 

http://www.2shared.com/file/pt5xhBCX/Sgrada_3d.html    my file

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Artur.Kosakowski
Posts: 4,849
Registered: ‎12-17-2010

Re: problem with releases in 3d model

12-17-2012 12:21 AM in reply to: georgimonew

The instability of type 3 means that there is large difference in stiffness among the elements of the model. In this particular case it is due to use of RLink elements to model rigid links. If you change solver to skyline (to allow not to use RLinks) and change the mass type to consistent for the modal case no instability will be reported.

 

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Artur Kosakowski
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Active Member
georgimonew
Posts: 6
Registered: ‎04-09-2012

Re: problem with releases in 3d model

12-17-2012 01:19 AM in reply to: georgimonew

Thanks a lot for the answer.

 

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