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error LF=0

Posted: 30 Apr 2016, 16:33
by paria.maroofi
Hi Dear
i have been modeling a jacket platform, after modeling i run Dynamic analysis time-history loading but there is an error like this

Estimated size of output file: 282973 KB


Permanent Loading
-----------------------------------------

LF= 0.00000, LF_incr= (Iter: 1 => fbd_Ite)
LF= 0.00000, LF_incr= (Iter: 1 => fbd_Ite)
LF= 0.00000, LF_incr= (Iter: 1 => fbd_Ite)
LF= 0.00000, LF_incr= (Iter: 1 => fbd_Ite)
-----------------------------------------
Unable to apply the entire permanent load. Analysis terminated
Total Analysis Time: 0h:0min:33sec
-----------------------------------------
If you could help i will be gratefull.
Can i send my model that you have a look on model let me know if i did anything wrong????
Sincerely yours.

Re: error LF=0

Posted: 01 May 2016, 08:23
by paria.maroofi
Please help me quickly, it is important.

Re: error LF=0

Posted: 04 May 2016, 11:12
by z.gronti
Dear paria.maroofi,

You may find a list with the convergence difficulties that may arise and their solution in the User Manual, the Help System and in the video below:

https://www.facebook.com/video.php?v=22 ... =2&theater
https://www.youtube.com/watch?v=p6tAyoofDog

You will also find a number of posts on this matter if you carry out a search on this forum for the term "unable to apply".

Finally, I would suggest you to run an eigenvalue analysis to check for the correct connection of the structural elements.

Re: error LF=0

Posted: 07 May 2016, 14:31
by paria.maroofi
Dear z.gronti
thanks for your guidance , i saw the videos and i did that list but it is'nt work and the error apears. i dont know what is the problem ????????!!!!!!

Re: error LF=0

Posted: 09 May 2016, 08:34
by z.gronti
Dear paria.maroofi,

Did you run an eigenvalue analysis to check for the correct connection of the structural elements?
If you did so, and your model is correct, then maybe the structure cannot stand the applied permanent loads.