Dear Seyed Ali,
now I understand better. What you could do is to disable
the phase-field functionality in the program or to
choose G_c very high such that the phase-field will never
be activated. Then you only have the elasticity part
and can compare.
||
By the way Thomas, if you don't remember me, we already met after your
GACM 2015 conference presentation and within the GAMM phase-field
workshop :)
Indeed. I did not make the relation ...
Maybe you remember: Back then you already mentioned that h < epsilon
to resolve the transition of the phase-field variable. Nevertheless,
this is true for the cracked region, but if you have only elastic case
the mesh size will not matter. This is just to allow a correct and
accurate resolution and regularization of the phase-field crack region.
Yes. This is correct. However, in case you do not know when the
crack starts propagating and phase-field values are going to zero
in the crack region, one has to be cautious with the number of
mesh cells (sufficiently enough), otherwise the relation h < epsilon
will be violated.
But again: even if you only have elasticity and thus do not
need to take care of h < epsilon; too coarse
mesh cells have a huge discretization error and are therefore
NOT accurate and thus questionable in their meaning!
Best regards,
Thomas
Kind regards,
S. A. Mohseni
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