nicholasmr / specfab Goto Github PK

I am playing around with your model to think about timescales for fabric evolution.

I can reproduce your demo result in /demo/fabric-evolution/run-fabric-evolution.py
However, if I change the number of time steps, Nt, to 500 instead of 50 (the default value) I get this oscillatory behavior which looks like a numerical artifact. It is especially apparent in the simple shear case although I have not tried all cases. I tried changing the time step which would be my normal approach for a numerical issue but that did not change anything.

I wonder if you can explain this physically (e.g. once the total strain exceeds 1 this weird behavior may be expected).

Thanks for any help! and awesome work on this, very slick model.