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[chiara modenese <c.modenese@xxxxxxxxx>]

Hi Bruno,

I just need your suggestions to understand if I am doing something wrong.. I
am using the Triaxial Test to generate the sample and to use the expansion
method for the sample generation. After that I fix the boundaries and I
apply the gravity gradually (say 10 steps) and among each step I cycle for a
while. If I look at the stresses on the bottom wall, after the compaction
phase (that say corresponds to 100 kPa) I see the stresses going down nearly
to zero and from there starting to increasing as I increment the value of
gravity.
I guess why the stresses on the bottom wall decrease instead of increase
from the value obtained during the compaction phase. When I start applying
the gravity at the top wall see a decresing in terms of stresses (and that
is fine) but I see the same also at the bottom.. Is that becuase I am no
more confining the sample? (I am just trying to give an explanation but I am
not really confident with that..)

Thanks for any kind of explanations or thoughts about that.

Chiara