Altair RISE

A program to recognize and reward our most engaged community members

Nominate Yourself Now!

Not Converged

hello,

I want to ask. I have a cantilever beam model and i want to bend it until the moment reaching the ultimate like pict below. But if I add more moment to my model. Why the analysis always said 'not converged'

I use LGDISP in my running.

NINC 1000 in NLPARM

NINT 100 in NLOUT

Is there something I could do to reach the ultimate bending moment?

image.png.c966103db46a42d347e41f1521526918.png

I share my .out .hm and nl.h3d file.

could someone help me? I'm so desperate about it /emoticons/default_sad.png' srcset='/emoticons/sad@2x.png 2x' title=':(' width='20' />

Unable to find an attachment - read this blog

Find more posts tagged with

English

OptiStruct

Accepted answers

All comments

Adriano_Koga

I'm sorry. Im away from the computer, ao i couldn't run your model.

Did you look at your nl.h3d file?

Is there anything unusual there?

Try changing the NLADAPT load collector and increasing the NCUTS to at least 10.

It controls the.number of maximum cutbacks. Default is 5.

Try increasing to 10 or 20.

Altair Forum User

thanks for your help, mr koga.

but it didn't work. my cutbacks still reach 20 /emoticons/default_sad.png' srcset='/emoticons/sad@2x.png 2x' title=':(' width='20' /> and I don't know why...

Adriano_Koga

Did you take a look at the nl.h3d file? Anything unusual?

There's also a nl.out file that details more your errors.