Instability Type 3

[cainy7]

There has been numerous other posts regarding this issue, but I have watched the webinars and searched the forum undertaking all the tricks to try and identify the stability issue but I have been unsuccessful. I have fixed all releases but still get the error therefore I tried to find any small bars, the smallest of which is 100mm which I think is sufficient. I have tried using a different solver but still could not identify the problem. Anyone got any further suggestions or should this just be ignored as it does not seem to affect the response of the building i.e. the moment diagrams look correct and deflections are not overly excessive.

[Rafal.Gaweda · Accepted solution]

Hi @cainy7

Move panel 1953 corner to node 359

Delete node 2096

Fixed file attached.

[cainy7]

Thanks Rafal,

Would you mind informing me how you spotted these errors so quickly?

I tried finding them for quite some time.

Kind regards

[Rafal.Gaweda]

Hi @cainy7

1. Using this addin you get:

then after correcting panel corner position and changing solver to Automatic you do not need to delete mentioned before node.

[ledinhchinh0409]

Where is this addin? thank you

[Romanich · Accepted solution]

Hi @ledinhchinh0409,

The list of all add-ins 

https://forums.autodesk.com/t5/robot-structural-analysis-forum/useful-addins-for-robot-api/td-p/3899...