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LievenC
Posts: 2
Registered: ‎01-17-2013
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Geometrical imperfection

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01-17-2013 06:35 AM

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,

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Artur.Kosakowski
Posts: 4,725
Registered: ‎12-17-2010

Re: Geometrical imperfection

01-17-2013 06:50 AM in reply to: LievenC

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).

 

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Artur Kosakowski
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New Member
LievenC
Posts: 2
Registered: ‎01-17-2013

Re: Geometrical imperfection

01-17-2013 07:31 AM in reply to: Artur.Kosakowski

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

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Artur.Kosakowski
Posts: 4,725
Registered: ‎12-17-2010

Re: Geometrical imperfection

01-17-2013 07:45 AM in reply to: LievenC

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.



Artur Kosakowski
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