Parameter for fixed crack front nodes

[ignathanas]

Hello all,

What is the parameter for fixing a persentage of the crack front nodes?

All best,

Ignatios

[Lukasz Kaczmraczyk]

Hi,

-gc_fix_threshold 0.5

This means that nodes that have g smaller than 0.5 g_max are fixed.

Typically that value is OK, for small benchmark problems you can check if it has any impact on results. Typically we set this value to fix nodes a priori which unlikely will move, and limit the number of unilateral constraints at crack front. Would be interesting to hear if that parameter has any impact. From my experience, not very big, if any at all.

Lukasz

[ignathanas]

Hello Lukasz,

Many thanks for the clear answer.

I will give it a go.

All best,

Ignatios