Creo simulate Non-linear analysis convergence problem

[ilyachaban]

Hello I have a problem with calculating model in Creo Simulate. 
The only difference of those models is mesh size. 
Solution on the left has no AutoGEM controm features
Solution on the right has applied Maximum size AutoGEM control globally 25mm and locally on contact regions 7mm.

Why it doesn't converge when AutoGEM has been applied applied?

[skunks]

sorry, unfortunately I can't help with this, I don't work with extreme non-linearities

[ilyachaban]

Here is an example of what i'm trying to do.
simple contact between two plates, quater model. 

 There is no flexibility in the model but anyways i'm getting messages like this 

There is only one(half) degree of freedom left. Movment in positive Y direction. If it is a mistake how can i fix this so i don't get messages about large displacements

[skunks]

OK, I only have Creo 3 as a maximum.
I'll make a model in Creo 2, you correct the details, OK?

[skunks]

can you do anything with my example?

[ilyachaban]

Hello, yes. I'm able to work with your model. there are some differences in our models. 
First one i've used calculate large deformation.
Second one i've udes elastoplastic material
So, when i apply all of this i'm getting the same message. So when i apply this type of connections etc. on bigger model which i will there will be a huge chanse that model wouldn't converge. 

[skunks]

OK. My (old) tests have shown that contacts and large deformations and plasticity only work on academic examples, not on larger models.

[skunks]

info as pdf

[ilyachaban]

Thank you for your answers I will probably try one more day on this task. 
It was very useful for me to hear that not only me having problem with Creo Simulate with the same type of simulations. 
But unfortunately I will have to finish this task some way or another. (will probably try another software)