A project by DCS Computing and CFDEMresearch
Dear all
In LIGGGHTS, I want to model a servo wall that compact particles till a specified stress is acting on the mesh. how can I do this? is it possible by mesh/surface/stress/servo??? as I know this fix cotrolls total force acting on the mesh.
any help would be appreciated.
Regards
Tala,
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ckloss | Tue, 06/28/2016 - 18:48
Hi Tala,
Hi Tala,
>>is it possible by mesh/surface/stress/servo
yes!
Christoph
tala | Wed, 06/29/2016 - 09:32
Dear Christoph
Dear Christoph
Hi
as I studied on the docs about this command
"This fix implements the functionality of fix mesh/surface/stress but it additionally assumes the mesh being a servo wall that compacts a particle packing until either a total force (for ctrlPV = force) or a total torque (for ctrlPV = torque) is acting on the mesh."
and I think this command can control total force or torque only?
am I true?
Thanks.
aaigner | Mon, 07/11/2016 - 23:31
Hi Tala,
Hi Tala,
The fix does not calculate the area of contact.
If you know the cross sectional area, you can calculate/estimate the required total force for your desired stress.
Bests
Andreas
tala | Wed, 07/13/2016 - 11:57
my sectional area is varying
my sectional area is varying through running the program. is there any possibility to have box's dimension as a variable through running? . I mean is it possible to have the coordination of vertices of simulation box are as variables? .
I had defined the triangular meshes for my box's walls.
Thanks a lot
Talat