error occurs after increasing load in NL quasi-static analysis

Altair Forum User · April 2017

I am able to run analysis successfully with 0.2 MPa pressure. But it is giving an error if i increase the load to 0.22 MPa in the same model.

What could be the reason?

Change in NLPARM card parameter didn't help.

.out file is attached.

Altair Forum User · May 2017

Hi Balram,

The structure must have reached its limiting point and hence not able to converge with N-R method

Do you have contacts in the model? I prefer looking at the model in detail,please let us know if you could share the deck?

Thanks,

Vikas

Altair Forum User · May 2017

Hi Balram,

I took a look at the .out file, the non-convergence is due to contact chattering.

Please attach the deck here, I shall modify the deck and send it across to you

Thanks,

Vikas

Altair Forum User · May 2017

Balram,

Please use the below link to upload the model/deck

Thanks,

VIkas

Answers