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Message #28474
Re: [Question #703498]: Young's modulus or the effect of the wall on the test
Question #703498 on Yade changed:
https://answers.launchpad.net/yade/+question/703498
Status: Needs information => Open
孙灿 gave more information on the question:
The code is as follows:
#Material constants(1)
Density1 = 1836
FrictionAngle1 = 5
PoissonRatio1 = 0.4
Young1 = 1e8
Damp = 0.5
AvgRadius1 = 0.05
N_particles = 10000
#Material constants(23)
Density23 = 2000
FrictionAngle23 = 27
PoissonRatio23 = 0.35
Young23 = 1e8
Damp = 0.5
AvgRadius1 = 0.05
N_particles = 10000
#Material constants(28)
Density28 = 2142
FrictionAngle28 = 1
PoissonRatio28 = 0.3
Young28 = 1e8
Damp = 0.5
AvgRadius = 0.05
N_particles = 10000
#Material constants(37)
Density37 = 2244
FrictionAngle37 = 1
PoissonRatio37 = 0.3
Young37 = 1e9
Damp = 0.5
AvgRadius = 0.05
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
SphereMat37 = O.materials.append(FrictMat(young = Young37, poisson = PoissonRatio37, frictionAngle = radians(FrictionAngle37), density = Density37))
SphereMat28 = O.materials.append(FrictMat(young = Young28, poisson = PoissonRatio28, frictionAngle = radians(FrictionAngle28), density = Density28))
SphereMat23 = O.materials.append(FrictMat(young = Young23, poisson = PoissonRatio23, frictionAngle = radians(FrictionAngle23), density = Density23))
SphereMat1 = O.materials.append(FrictMat(young = Young1, poisson = PoissonRatio1, frictionAngle = radians(FrictionAngle1), density = Density1))
WallMat = O.materials.append(FrictMat(young = WYoung, poisson = WPoissonRatio, frictionAngle = radians(WFrictionAngle)))
from yade import pack,plot
O.bodies.append(geom.facetBox((0.05, 30, 30), (0.3, 30, 30), wallMask=63,material=WallMat))
sp = pack.SpherePack()
sp.makeCloud(Vector3(0.05,0,0),Vector3(0.05,60,46), rMean=0.08, rRelFuzz=0)
sp.toSimulation(material = SphereMat37)
sp = pack.SpherePack()
sp.makeCloud(Vector3(0.05,0,46),Vector3(0.05,60,51), rMean=0.06, rRelFuzz=0)
sp.toSimulation(material = SphereMat28)
sp = pack.SpherePack()
sp.makeCloud(Vector3(0.05,0,51),Vector3(0.05,60,57), rMean=0.03, rRelFuzz=0)
sp.toSimulation(material = SphereMat23)
sp = pack.SpherePack()
sp.makeCloud(Vector3(0.05,0,57),Vector3(0.05,60,60), rMean=0.05, rRelFuzz=0)
sp.toSimulation(material = SphereMat1)
(xdim,ydim,zdim)= aabbDim()
print("Height is ",zdim)
for b in O.bodies:
if isinstance(b.shape,Sphere):
b.state.blockedDOFs='ZxY'
b.shape.color=(0,0,1.)
circleRadius=3.14
circleCenter = Vector3(0.05,30,12)
#myEngine.dead = True
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,label="myEngine"),
PyRunner(command='addPlotData()', iterPeriod=100)
]
O.dt = 0.5 * PWaveTimeStep()
O.trackEnergy = True
def ranse():
for b in O.bodies:
if isinstance(b.shape,Sphere):
#b.state.blockedDOFs='zxy'
b.state.vel=(0,0,0)
b.state.angVel=(0,0,0)
if b.state.pos[2]<=23:
b.shape.color=(0,1,1.)
if b.state.pos[2]>23 and b.state.pos[2]<=25.5:
b.shape.color=(2.,2.,1.)
if b.state.pos[2]>28.5 :
b.shape.color=(1,1,0)
if b.state.pos[2]>30:
O.bodies.erase(b.id)
def shuju():
zMax = max(b.state.pos[2] for b in O.bodies if isinstance(b.shape,Sphere))
print("Z ",zMax)
ceng = zMax-0.2
for b in O.bodies:
if b.state.pos[2]>ceng:
print(b.id,b.state.pos)
shuzu.append(b.id)
print(shuzu)
def addPlotData():
plot.addData(i=O.iter, unbalanced=unbalancedForce(), **O.energy)
def duqu():
for i in shuzu:
b = O.bodies[i]
print("voila",i,b.state.pos)
def wadong1():
for b in O.bodies:
d = (b.state.pos - circleCenter).norm()
if d < circleRadius:
O.bodies.erase(b.id)
O.saveTmp()
from yade import qt
qt.Controller()
qt.View()
I want to know if Young's modulus and walls cause asymmetry in the
simulation results.
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