Convergence problem - help needed urgent pls

[aero12345]

Hi every one,

I have to do damage modelling for a complex composite material, so just to check if it's going to work in ANSYS
I modelled a simple curved geometry of two curved materials (of similar properties or different), meshed with solid185 elements and seperated by interface elements.
But here I have problem with convergence just before reaching maximum normal stress of interface elements (INTER205). I tried with different element formulations also but still have this convergence problem. Please note that I am not looking for accuracy in this case and so the model is not meshed fine at the curves (does it affect the conrgence?).
Please help me find where I am going wrong, this is very important for my work.
I am attaching the input file for this problem for your understanding, please try this.

Thanks a lot for your inputs,
Vinston

 

[maxibonne]

A coarse mesh could affect convergence yes.

 

[aero12345]

As far as I know it affects the accuracy of the results but does it give convergence problem because of the coarse mesh? Do you mean to say that my model would converge if I have more finer mesh. Please some one let me know whats wrong with my approach and why the above model is not converging.

Thanks for your time,
Vinston

 

[maxibonne]

According to my knowledge, yes a finer mesh might help it to converge. But I'm saying this in general, it might / might not work in your case. You can always try..