Autodesk Robot Structural Analysis

[#1]

Since upgrading to 2012 version I am receiving the 'Instability (of type 3) error' in my model.  I have modified the model many times, but the errors just moves to another node.

I even started a new model from the beginning and received the same error.

Is this a common problem?

thanks

Omar

[#2]

Please try to type instability into the search box and check if one of the posts on this subject answers your question. If you still are not able to determine the source of the instability in your model send the rtd file.

[#3]

I have tried going through the various threads relating to the type 3 instability, but still having problems.

Please find attached a link to my model:

http://www.filemail.com/dl.aspx?id=UTRHFHMVGKJSWWE

it would be greatly appreaciated if you could have a look and provide guidance.

thanks

Omar

[#4]

The word you are looking for is accuracy

Please send me a private message with your email address - I'll send you back the corrected model.

[#5]

I have mailed you the model.

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. 

[#6]

I have not recieved the email yet, so I am assuming that it is too large for my system.

Would you be able to send me a link via filemail or similar?

[#7]

https://www.filemail.com/dl.aspx?id=SNDGLEUUESUSDMI

[#8]

thank you.  that is the problem sorted.  What was I doing wrong?  I have never recieved this error when creating models before ungrading to 2012 version.

thanks

Omar

[#9]

Have you looked at the pictures I attached to the message 4? I can't tell what was the reason you have separated bars and overlapped panels but I managed to correct these mistakes.

[#10]

sorry, I didn't notice the pictures at first.

thanks again.

Omar