Periodic boundaries in one direction and load-controlled walls in the others

Asked by Katia Boschi on 2019-01-17

I would like to employ periodic boundaries, equipped with a servo-control to impose a cell pressure, in the horizontal directions. In the vertical one, instead, I need to adopt a load-controlled rigid wall.

More precisely, I was wondering if it is possible to apply periodic boundaries only in two directions and if I can apply a force directly to the rigid wall.

Question information

Language:
English Edit question
Status:
Solved
For:
Yade Edit question
Assignee:
No assignee Edit question
Solved by:
Bruno Chareyre
Solved:
2019-01-18
Last query:
2019-01-18
Last reply:
2019-01-17

Hi, it is possible, yes. See e.g. [1].
You need to make sure the walls are sufficiently large so no particles will reach edges during the simulation.
And you need allowBiggerThanPeriod=True for the collider to accept large non-periodic objects.
Bruno

[1] https://link.springer.com/article/10.1007/s10035-015-0560-6

Katia Boschi (katia.boschi) said : #2

Thanks Bruno!