Warning 2617 ,2625

Altair Forum User

Hello together,

after starting a frequency response analysis I got the error message 'warning 2617 and 2625':

*** WARNING # 2617
CONTACT interface 203 has 21 Slave nodes that belong to some of
Master segments, indicating likely self-contact condition. This may result in
poor quality of contact elements, redundant contact conditions, and patchy
pressure distribution, especially on curved contact surfaces.

*** WARNING # 2625
CONTACT interface 203 includes areas that have self-contact condition
and apparently pre-penetrations. To avoid detecting false pre-penetrations
(which may appear across thin solids with self-contact on both sides)
declare SRCHDIS smaller than minimum thickness of respective solids.
Or, if it is known that there are no true pre-penetrations in
self-contact areas, use CONTPRM,SFPRPEN,NO.

I am using several interfaces in that model between components of different stiffnesses in all cases 'freeze' option.
Is this maybe causing the problem?

Altair Forum User

Hi,

check if the master and slave components share the same node(s) in the model, if yes then detach the components and create separate master surface and slave nodes. Also check if there are any element penetrations in the model.

could you please explain what exactly are you trying to analyze?

Altair Forum User

Hi Prakash! 

I'm having the same problem. In my model, i have several interfaces too, but SLIDE and FRICTION tips. I will do what you recomended. If not works, would be right do what the program suggested?  CONTPRM,SFPRPEN,NO ?  But i think that will works what you said, looking my model. One Doubt, for example: 'CONTACT Interface 203' means GROUP ID 203?

Thanks !!!

Altair Forum User

One thing, I'm doing that in Optistruct!! Not Radioss. 

 

Altair Forum User

Hi,

 

Can you share the .out file, please?