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[Jan Stránský <question224128@xxxxxxxxxxxxxxxxxxxxx>]

Question #224128 on Yade changed:
https://answers.launchpad.net/yade/+question/224128

    Status: Open => Answered

Jan Stránský proposed the following answer:
Hello,

    (1) It is a 2D simulation.
>

it is possible, see some previous questions related to 2d simulation:
https://answers.launchpad.net/yade/+question/198183
https://answers.launchpad.net/yade/+question/215571
https://answers.launchpad.net/yade/+question/174453


>     (2) The numerical idealization consists of a box formed by four
> plattens and its sides are constrained by a constant force(2N/m) for
> numerically generating an initial state of a granular assembly and move
> horizontally.
>

This should be possible with
https://yade-dem.org/doc/yade.wrapper.html#yade.wrapper.ThreeDTriaxialEngine
or
https://yade-dem.org/doc/yade.wrapper.html#yade.wrapper.TriaxialStressController
but I have no personal experience, so hopefully somebody else will reply :-)


>     (3) The top platten is driven downward and the bottom upward at a
> constant velocity to simulate uniaxial compression under a constant lateral
> force.
>

This should be provided by previous engines


>     (4) The simulation may run with variations of particle size and
> shape(disk or ellipse).
>

You can use "discs" (2D projection of spheres), but there are not
ellipses/ellipsoids in Yade. You can try to use clumps if spheres will work


>     (5) The friction between the plattens and the grains is the same as
> between the grains themselves.
>

it is possible


>     (6) The simulation may be controlled by time step and loading rate.
>

controlling loading rate should be also possible with aforementioned
engines. What do you mean by "controlled by time step"?


>
>     Now, there is almost no experience for me to do this work with YADE.
> So my first question is whether all the above steps can be implemented in
> YADE or not, and the second one is how to start the 2D simulation in YADE.
>
>
By "can be implemented" do you mean that they can by used directly, or
actual new implementation? In fact, almost anything can be implemented ;-)

I hope I hepled you a bit. Don't hesitate to ask if something is not clear
:-)
Jan

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