Question #629486 on Yade changed:
https://answers.launchpad.net/yade/+question/629486
Status: Answered => Open
Ed Carlos Alves Rocha is still having a problem:
I did the Cylinder example, however, I do not know give the imput of
collision detection for this example. Can you take a look and see what
impact collision between the cylinders and the wall?
Thank you very much for your attention.
from yade.gridpfacet import *
Parameter
L=1.# length of the cylinder element
r=0.1 # radius of the cylinder element
phi=30. # friction angle
E=1e6 # Young's modulus
idCana=O.materials.append(FrictMat(young=3.4e6,poisson=.3,frictionAngle=.6,
density=4.5e2,label="cana"))
idSteel=O.materials.append(FrictMat(young=210e9,poisson=.25,frictionAngle=.8,density=7.85e3,label="steel"))
O.bodies.append(geom.facetBox((0,0,0),(3,3,3),wallMask=31,material="steel"
))
Engines
O.engines=[
ForceResetter(),
InsertionSortCollider([Bo1_GridConnection_Aabb(),Bo1_Sphere_Aabb(),Bo1_Facet_Aabb(),
Bo1_Wall_Aabb()]),
InteractionLoop([
Ig2_GridNode_GridNode_GridNodeGeom6D(),
Ig2_GridConnection_GridConnection_GridCoGridCoGeom(),
Ig2_Sphere_Sphere_ScGeom(),
Ig2_Facet_Sphere_ScGeom(),
Ig2_Wall_Sphere_ScGeom()
],
[
Ip2_CohFrictMat_CohFrictMat_CohFrictPhys(setCohesionNow=True,setCohesionOnNewContacts=True),
Ip2_FrictMat_FrictMat_FrictPhys()],
[
Law2_ScGeom6D_CohFrictPhys_CohesionMoment(),
Law2_ScGeom_FrictPhys_CundallStrack(),
Law2_ScGridCoGeom_FrictPhys_CundallStrack(),
Law2_GridCoGridCoGeom_FrictPhys_CundallStrack()
]),
NewtonIntegrator(gravity=(-0.,0,-10),damping=0.5,label='newton'),
]
Creat materials
O.materials.append( CohFrictMat(
young=E,poisson=0.3,density=1000,frictionAngle=radians(phi),normalCohesion=1e10,shearCohesion=1e10,momentRotationLaw=True,label='cMat'
) ) # material to create the gridConnections
O.materials.append( FrictMat(
young=E,poisson=0.3,density=1000,frictionAngle=radians(phi),label='fMat' ) ) #
material for general interactions
Create cylinders
nodesIds=[]
cylIds=[]
cylinder((0,0,0),(L,0,0),radius=r,nodesIds=nodesIds,cylIds=cylIds,
fixed=False,color=[1,0,0],intMaterial='cMat',extMaterial='fMat')
cylinder((L/4,2*L/3,L),(L/4,-L/3,L),radius=r,nodesIds=nodesIds,cylIds=cylIds,
fixed=False,color=[0,1,0],intMaterial='cMat',extMaterial='fMat')
cylinder((0,2*L/3,L),(0,-L/3,L),radius=r,nodesIds=nodesIds,cylIds=cylIds,
fixed=False,color=[0,1,0],intMaterial='cMat',extMaterial='fMat')
cylinder((L/2,L/2,L),(L/2,-L/2,L),radius=r,nodesIds=nodesIds,cylIds=cylIds,
fixed=False,color=[0,1,1],intMaterial='cMat',extMaterial='fMat')
cylinder((3*L/4,L/3,L),(3*L/4,-2*L/3,L),radius=r,nodesIds=nodesIds,cylIds=cylIds,
fixed=False,color=[0,0,1],intMaterial='cMat',extMaterial='fMat')
cylinder((L,L/3,L),(L,-2*L/3,L),radius=r,nodesIds=nodesIds,cylIds=cylIds,
fixed=False,color=[0,0,1],intMaterial='cMat',extMaterial='fMat')
For viewing
from yade import qt
qt.View()
Gl1_Sphere.stripes=True
Set a time step
O.dt=1e-06
Allows to reload the simulation
O.saveTmp()
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