yade-dev team mailing list archive

[Václav Šmilauer <eudoxos@xxxxxxxx>]

Hi (Bruno),

I wrote yesterday PeriTriaxController. I have in mind some more precise
control using a Matrix3 that would relate 3 goal numbers to prescribed
strain/stresses; a system of linear equations, if you like.

For instance: goal=(1e6,0,0.1), computed variables comp=(σx,σy,εz), i.e.
stressMask=3 (first 2 components are stress, the last one is not)) and
the matrix

1  0 0 
1 -1 0
0  0 1

then the system comp=M*goal gives

σx=1e6
σy=σx
εz=0.1.

I am wondering if you have an idea to extend this to include strain
rates as well (it is not independent)

(BTW don't look at the stiffness computation there, it is wrong, I know;
the average stress is right, though)