Dear all
Can someone share experience on how to impose incompressible constraint by augment Lagrangian option?
I am now using nu is close to 0.5 for the modified neohookean material, but the stress calculated is terrible. I guess the reason is J is near to 1 but different with 1 in the penalty method, so I hope to use the augment langrangian option which could make J is exactly 1 (is is true?).
Do I also need add 'augm loop' in solving section? If I decrease the penalty value (K or nu), what value for 'augf, number of augmented iterations' should I choose for holding the incompressiblily?
| mate 1
| solid
| finite volume 2
| mixed
| elas mneo 10 0.4999
| augm on
Thanks very much for your kind time.
