Autodesk Robot Structural Analysis

[#1]

Dear,

I want to take into account the geometrical imperfection of some bars. The problem is that the calculation does not come to convergence.

How can I solve this problem?

Thanks,

[#2 · Accepted solution]

My assumption is that you have non linear analysis. You may try to set the Full Newton-Raphson method (both update check boxes marked) but it is also possible that the applied load is excessive for the initially deformed structure (you may try to reduce it and check again).

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.

[#3]

Thanks, yes I have non linear analysis. Where can I set the Fill Newton-Raphson method on?

[#4 · Accepted solution]

http://forums.autodesk.com/t5/Autodesk-Robot-Structural/Non-linear-Static-Analysis-Parameters/m-p/36...

http://forums.autodesk.com/t5/Autodesk-Robot-Structural/Nonlinear-analysis-Iteration/m-p/3385747

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.