New question #702934 on Yade:
https://answers.launchpad.net/yade/+question/702934
Initially, my simulation used the default materials and didn't deliberately set
the characteristics of the particles and walls. After adding these features, I
found that after the particle stabilized, the input O.run() could not run the
code again, why is this?
The code is as follows:
#Material constants
Density = 2630
FrictionAngle = 2.1
PoissonRatio = 0.5
Young = 300e6
Damp = 0.5
AvgRadius = 0.1
N_particles = 10000
#Wall constants
WDensity = 0
WFrictionAngle = 0.0
WPoissonRatio = 0.1
WYoung = 50e9
#time calculation
startT = O.time
endT = O.time
timeSpent = endT - startT
SphereMat = O.materials.append(FrictMat(young = Young, poisson = PoissonRatio,
frictionAngle = radians(FrictionAngle), density = Density))
WallMat = O.materials.append(JCFpmMat(young = WYoung, poisson =
WPoissonRatio,label='JCFmat', frictionAngle = radians(WFrictionAngle), density
=WDensity,jointNormalStiffness=2e8,jointShearStiffness=1.5e8))
from yade import pack,plot
O.bodies.append(geom.facetBox((0.05, 9, 10), (0.1, 9, 10),
wallMask=63,material=WallMat))
sp = pack.SpherePack()
sp.makeCloud(Vector3(0.05,0,0),Vector3(0.05,18,20), rMean=0.1, rRelFuzz=0)
sp.toSimulation(material = SphereMat)
for b in O.bodies:
if isinstance(b.shape,Sphere):
b.state.blockedDOFs='ZxY'
b.shape.color=(3.,2.,1.)
circleRadius=1.5
circleCenter = Vector3(0.05,6,6)
circleRadius1=1.5
circleCenter1 = Vector3(0.05,12,6)
O.engines = [
ForceResetter(),
InsertionSortCollider([Bo1_Sphere_Aabb(), Bo1_Facet_Aabb()]),
InteractionLoop(
[Ig2_Sphere_Sphere_ScGeom(), Ig2_Facet_Sphere_ScGeom()],
[Ip2_FrictMat_FrictMat_FrictPhys()],
[Law2_ScGeom_FrictPhys_CundallStrack()]
),
NewtonIntegrator(gravity=(0, 0, -9.81), damping=0.4),
PyRunner(command='checkUnbalanced()', realPeriod=2),
PyRunner(command='addPlotData()', iterPeriod=100)
]
O.dt = 0.5 * PWaveTimeStep()
O.trackEnergy = True
shuzu=[]
def checkUnbalanced():
if unbalancedForce() < .01:
O.pause()
for b in O.bodies:
if isinstance(b.shape,Sphere):
b.state.vel=(0,0,0)
b.state.angVel=(0,0,0)
d = (b.state.pos - circleCenter).norm()
d1 = (b.state.pos - circleCenter1).norm()
if d < circleRadius:
O.bodies.erase(b.id)
if d1 < circleRadius1:
O.bodies.erase(b.id)
def addPlotData():
plot.addData(i=O.iter, unbalanced=unbalancedForce(), **O.energy)
O.saveTmp()
from yade import qt
qt.Controller()
qt.View()
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