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Re: Hybrid control of boundary stress
Mahmud a écrit :
Hi all. In the recent release of YADE, the independent stress and strain
control has been added by introducing a new engine
I am not that this engine works with the last release of Yade, I think
the engine hase not been updated, you should verify. I will do an update
later in the winter.
I am interested in a hybrid control of the boundary stress where the
vertical walls will move using strain control method while the lateral
two walls will move with stress controlled method such that the
increment in S22 (say 10 kPa) in each step due to the movement of
the vertical walls will be adjusted by reducing the S11 (say -7 kPa)
and S33 (say -3 kPa). How can I do that?
I am sorry but I am not sure to understand what you want to do. Maybe it
would be clearer if you use always numbers 1, 2 or 3 to represent the
three space directions instead of using sometimes numbers 1,2.. and
sometimes vertical and lateral walls...
However, I imagine you want to ajust the stress in one or two direction
with respect to stress value in the thrid direction?
ThreeDTriaxialEngine has not been done to perform such a control, but
you can start from this engine to write the code that you need. I think
the first step would be to write and give us the relation that you want
to fix between s11, s22 and s33, for instance: s33= s11 + 0.258*s22.
Thanks in advanced.
Université de Nantes - Laboratoire GeM UMR CNRS
IUT de Saint Nazaire
58, rue Michel-Ange - BP 420
44606 Saint-Nazaire Cedex, France
Tel: +33 (0)2 40 17 81 78