Re: [Yade-users] [Question #707675]: Shear force is lower than MaxShearForce but sliding occurs
Question #707675 on Yade changed: https://answers.launchpad.net/yade/+question/707675 Status: Answered => Solved Leonard confirmed that the question is solved: Thanks Karol Brzezinski, that solved my question. -- You received this question notification because your team yade-users is an answer contact for Yade. ___ Mailing list: https://launchpad.net/~yade-users Post to : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
Re: [Yade-users] [Question #707882]: Cylindrical triaxial test using walls
Question #707882 on Yade changed: https://answers.launchpad.net/yade/+question/707882 Status: Open => Answered Jérôme Duriez proposed the following answer: Hi, A Wall [*] shaped-body is an infinite plane (or infinite half-domain depending on Wall.sense), so no, it can not correspond to a cylindrical wall. If this is really what you want, you have to go through Facet shapes indeed, but you should note there is no Ig2_Facet_LevelSet_* functor available at the moment (and interaction with LevelSet-shaped bodies will not be possible) [*] https://yade-dem.org/doc/yade.wrapper.html#yade.wrapper.Wall -- You received this question notification because your team yade-users is an answer contact for Yade. ___ Mailing list: https://launchpad.net/~yade-users Post to : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
Re: [Yade-users] [Question #698464]: asphalt mixture model, contact, code
Question #698464 on Yade changed: https://answers.launchpad.net/yade/+question/698464 isadjkn123 proposed the following answer: Hi, Asphalt mixture modeling is a complex topic, but it is very important for designing and building durable and safe roads. To arrange asphalt mortar in the form of code, you can use a variety of methods, such as discrete element methods (DEM) simulators or continuum models. To establish the contact between particles in asphalt mortar, you can use a variety of contact models, such as the Hertz model or the Johnson- Kendall-Roberts (JKR) model. The best method and contact model for your simulations will depend on the specific problem you are trying to solve. If you need help with asphalt calculations, you can use an https://asphaltcalculators.com/ -- You received this question notification because your team yade-users is an answer contact for Yade. ___ Mailing list: https://launchpad.net/~yade-users Post to : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
Re: [Yade-users] [Question #707955]: Unexpected Termination of Yade Script After Particle Deletion
Question #707955 on Yade changed: https://answers.launchpad.net/yade/+question/707955 Masataka Shiga posted a new comment: I did not notice the #707886 announcement. I will move this question to gitlab. Many thanks. -- You received this question notification because your team yade-users is an answer contact for Yade. ___ Mailing list: https://launchpad.net/~yade-users Post to : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
[Yade-users] [Question #707955]: Unexpected Termination of Yade Script After Particle Deletion
New question #707955 on Yade:
https://answers.launchpad.net/yade/+question/707955
Hello Yade Community,
I'm working on a simulation to create a sample through natural sedimentation.
Here's a brief description of my issue:
I'm trying to create a specimen through natural sedimentation.
By setting O.periodic=True, I've established periodic boundary conditions
laterally and fixed boundary conditions vertically using a Facet whose position
is fixed at the bottom.
I generate particles at a height well above the target, allow them to settle
under gravity, and once the average coordination number surpasses 3, I aim to
delete particles above a specific height to achieve a group of particles at the
desired height.
However, after deleting the particles using the code below, the program stops
after a certain number of iterations (ranging from a few tens to thousands).
There's no error message displayed in the terminal.
Moreover, the iteration at which the program stops varies with each script
execution.
I'm puzzled by this unexpected behavior, especially given the absence of any
error messages. Any insights or suggestions would be greatly appreciated.
Thank you in advance for your assistance.
# Environment:
Execution Command: yade -j16 code.py
Yade Version: 2022.01a
Linux Version: Ubuntu 22.04.3 LTS
Architecture: amd64
# Script (MWE):
from yade import pack, utils
import numpy as np
state_index = 0
pack_sp = pack.SpherePack()
pack_sp.makeCloud((0.02, 0.02, 0.02),
(0.08, 0.98, 0.08),
rMean=0.01)
sphere_id = pack_sp.toSimulation()
O.periodic = True
base_facet_1 = utils.facet([Vector3(-0.02, 0, -0.02),
Vector3(0.12, 0, -0.02),
Vector3(-0.02, 0, 0.12)],
fixed=True)
base_facet_2 = utils.facet([Vector3(0.12, 0, 0.12),
Vector3(0.12, 0, -0.02),
Vector3(-0.02, 0, 0.12)],
fixed=True)
base_facet_id = O.bodies.append([base_facet_1, base_facet_2])
O.cell.hSize = Matrix3(0.1, 0, 0,
0, 1, 0,
0, 0, 0.1)
O.periodic = True
O.engines = [
ForceResetter(),
InsertionSortCollider(
[Bo1_Sphere_Aabb(), Bo1_Facet_Aabb()], allowBiggerThanPeriod=True),
InteractionLoop(
[Ig2_Sphere_Sphere_ScGeom(), Ig2_Facet_Sphere_ScGeom()],
[Ip2_FrictMat_FrictMat_FrictPhys()],
[Law2_ScGeom_FrictPhys_CundallStrack()]),
NewtonIntegrator(damping=0.2, gravity=(0, -9.81, 0)),
PyRunner(iterPeriod=100, command="checkState()")
]
O.dt = PWaveTimeStep() * 0.5
def checkState():
global sphere_id, state_index
if state_index == 0:
temp_sphere_coord_num = [len(O.interactions.withBody(i)) for i in
sphere_id]
temp_sphere_Y = [O.bodies[i].state.pos[1] for i in sphere_id]
temp_sphere_data = np.array([sphere_id, temp_sphere_coord_num,
temp_sphere_Y])
if temp_sphere_data[1, :].mean() >=3:
temp_unused_sphere_id = temp_sphere_data[0, temp_sphere_data[2, :]
> 0.1]
for temp_unused_sphere_id_each in temp_unused_sphere_id:
O.bodies.erase(int(temp_unused_sphere_id_each))
sphere_id.remove(int(temp_unused_sphere_id_each))
print("some particles are deleted at", O.iter)
state_index = 1
elif state_index == 1:
pass
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