Question #706653 on Yade changed:
https://answers.launchpad.net/yade/+question/706653
Description changed to:
In the following code, how can i make the sizes of the bottom face of the box
10 times what it currently is, and increase the length of sides A and C of the
box ten times as well:
# -*- encoding=utf-8 -*-
# CWBoon 2015
from yade import pack
import math
import os
import errno
try:
os.mkdir('./vtk/')
except OSError as exc:
if exc.errno != errno.EEXIST:
raise
pass
Gl1_PotentialParticle().store=True
O.engines=[
ForceResetter(),
InsertionSortCollider([PotentialParticle2AABB()],verletDist=0.01,
avoidSelfInteractionMask=2),
InteractionLoop(
[Ig2_PP_PP_ScGeom(twoDimension=False, unitWidth2D=1.0,
calContactArea=True, areaStep=5)],
[Ip2_FrictMat_FrictMat_KnKsPhys(kn_i=1e8, ks_i=1e7, Knormal =
1e8, Kshear = 1e7, useFaceProperties=False, viscousDamping=0.05)],
[Law2_SCG_KnKsPhys_KnKsLaw(label='law',neverErase=False)]
),
NewtonIntegrator(damping=0.0,exactAsphericalRot=True,gravity=[0,-9.81,0]),
PotentialParticleVTKRecorder(fileName='./vtk/cubePPscaled',label='vtkRecorder',twoDimension=False,iterPeriod=5000,sampleX=50,sampleY=50,sampleZ=50,maxDimension=0.2)
]
powderDensity = 2000
distanceToCentre= 0.5
meanSize = 1.0
wallThickness = 0.5*meanSize
O.materials.append(FrictMat(young=-1,poisson=-1,frictionAngle=radians(0.0),density=powderDensity,label='frictionless'))
#The normal and shear stifness values are determined in the IPhys functor,
thus the young, poisson parameters of the FrictMat are not used.
lengthOfBase = 9.0*meanSize
heightOfBase = 14.0*meanSize
sp=pack.SpherePack()
mn,mx=Vector3(-0.5*(lengthOfBase-wallThickness),0.5*meanSize,-0.5*(lengthOfBase-wallThickness)),Vector3(0.5*(lengthOfBase-wallThickness),7.0*heightOfBase,0.5*(lengthOfBase-wallThickness))
R=sqrt(3.0)*distanceToCentre
sp.makeCloud(mn,mx,R,0,100,False)
count= 0
r=0.05*meanSize
for s in sp:
b=Body()
b.mask=1
b.aspherical=True
wire=False
color=Vector3(random.random(),random.random(),random.random())
highlight=False
b.shape=PotentialParticle(k=0.2, r=r, R=R, a=[1,-1,0,0,0,0],
b=[0,0,1,-1,0,0], c=[0,0,0,0,1,-1],
d=[distanceToCentre-r,distanceToCentre-r,distanceToCentre-r,distanceToCentre-r,distanceToCentre-r,distanceToCentre-r],
isBoundary=False, color=color, wire=wire, highlight=highlight,
minAabb=sqrt(3)*Vector3(distanceToCentre,distanceToCentre,distanceToCentre),
maxAabb=sqrt(3)*Vector3(distanceToCentre,distanceToCentre,distanceToCentre),
maxAabbRotated=1.02*Vector3(distanceToCentre,distanceToCentre,distanceToCentre),
minAabbRotated=1.02*Vector3(distanceToCentre,distanceToCentre,distanceToCentre),
AabbMinMax=True, id=count)
V=(2*distanceToCentre)**3 # (approximate) Volume of cuboid
geomInert=(1./6.)*V*(2*distanceToCentre)**2 # (approximate) Principal
inertia of cuboid to its centroid
utils._commonBodySetup(b, V, Vector3(geomInert,geomInert,geomInert),
material='frictionless', pos=[0,0,0], fixed=False)
b.state.pos = s[0] #s[0] stores center
b.state.ori =
Quaternion((random.random(),random.random(),random.random()),random.random())
#s[2]
O.bodies.append(b)
count=count+1
#Bottom faces of the box
r=0.1*wallThickness
bbb=Body()
bbb.mask=3
wire=False
color=[0,0.5,1]
highlight=False
bbb.shape=PotentialParticle(k=0.1, r=0.1*wallThickness,
R=0.2*lengthOfBase,a=[1,-1,0,0,0,0], b=[0,0,1,-1,0,0], c=[0,0,0,0,1,-1],
d=[lengthOfBase/2.0-r,lengthOfBase/2.0-r,0.5*wallThickness-r,0.5*wallThickness-r,lengthOfBase/2.0-r,lengthOfBase/2.0-r],
id=count,isBoundary=True,color=color,wire=wire,highlight=highlight,AabbMinMax=True,
minAabb=1.02*Vector3(lengthOfBase/2.0,0.5*wallThickness,lengthOfBase/2.0),maxAabb=1.02*Vector3(lengthOfBase/2.0,0.5*wallThickness,lengthOfBase/2.0),maxAabbRotated=1.02*Vector3(lengthOfBase/2.0,0.5*wallThickness,lengthOfBase/2.0),minAabbRotated=1.02*Vector3(lengthOfBase/2.0,0.5*wallThickness,lengthOfBase/2.0),fixedNormal=False)
length=lengthOfBase/1.
V=length*length*wallThickness
geomInertX=(1./12.)*V*(length**2+wallThickness**2)
geomInertY=(1./12.)*V*(length**2+length**2)
geomInertZ=(1./12.)*V*(length**2+wallThickness**2)
utils._commonBodySetup(bbb, V, Vector3(geomInertX,geomInertY,geomInertZ),
material='frictionless', pos=[0,0,0], fixed=True)
bbb.state.pos = [0.0,0,0]
lidID = O.bodies.append(bbb)
count=count+1
#Vertical faces A-B-C-D of the box
bA=Body()
bA.mask=3
wire=False
color=[0,0.5,1]
highlight=False
bA.shape=PotentialParticle(k=0.1, r=0.1*wallThickness,
R=0.5*heightOfBase,a=[1,-1,0,0,0,0], b=[0,0,1,-1,0,0], c=[0,0,0,0,1,-1],
d=[0.5*wallThickness-r,0.5*wallThickness-r,0.5*heightOfBase-r,0.5*heightOfBase-r,0.5*lengthOfBase-r,0.5*lengthOfBase-r],
id=count,isBoundary=True,color=color,wire=wire,highlight=highlight,AabbMinMax=True,
minAabb=1.02*Vector3(0.4*wallThickness,0.5*heightOfBase,0.5*lengthOfBase),maxAabb=1.02*Vector3(0.4*wallThickness,0.5*heightOfBase,0.5*lengthOfBase),maxAabbRotated=1.02*Vector3(0.5*wallThickness,0.5*heightOfBase,0.5*lengthOfBase),minAabbRotated=1.02*Vector3(0.5*wallThickness,0.5*heightOfBase,0.5*lengthOfBase),fixedNormal=False)
#length=lengthOfBase
V=lengthOfBase*heightOfBase*wallThickness
geomInertX=(1./12.)*V*(heightOfBase**2 + lengthOfBase**2)
geomInertY=(1./12.)*V*(wallThickness**2 + lengthOfBase**2)
geomInertZ=(1./12.)*V*(wallThickness**2 + heightOfBase**2)
utils._commonBodySetup(bA, V, Vector3(geomInertX,geomInertY,geomInertZ),
material='frictionless', pos=[0,0,0], fixed=True)
bA.state.pos = [0.5*lengthOfBase,0.5*heightOfBase,0]
O.bodies.append(bA)
count=count+1
bB=Body()
bB.mask=3
wire=False
color=[0,0.5,1]
highlight=False
bB.shape=PotentialParticle(k=0.1, r=0.1*wallThickness,
R=0.5*heightOfBase,a=[1,-1,0,0,0,0], b=[0,0,1,-1,0,0], c=[0,0,0,0,1,-1],
d=[0.5*wallThickness-r,0.5*wallThickness-r,0.5*heightOfBase-r,0.5*heightOfBase-r,0.5*lengthOfBase-r,0.5*lengthOfBase-r],
id=count,isBoundary=True,color=color,wire=wire,highlight=highlight,AabbMinMax=True,
minAabb=1.02*Vector3(0.4*wallThickness,0.5*heightOfBase,0.5*lengthOfBase),maxAabb=1.02*Vector3(0.4*wallThickness,0.5*heightOfBase,0.5*lengthOfBase),maxAabbRotated=1.02*Vector3(0.5*wallThickness,0.5*heightOfBase,0.5*lengthOfBase),minAabbRotated=1.02*Vector3(0.5*wallThickness,0.5*heightOfBase,0.5*lengthOfBase),fixedNormal=False)
#length=lengthOfBase
V=lengthOfBase*heightOfBase*wallThickness
geomInertX=(1./12.)*V*(heightOfBase**2 + lengthOfBase**2)
geomInertY=(1./12.)*V*(wallThickness**2 + lengthOfBase**2)
geomInertZ=(1./12.)*V*(wallThickness**2 + heightOfBase**2)
utils._commonBodySetup(bB, V, Vector3(geomInertX,geomInertY,geomInertZ),
material='frictionless', pos=[0,0,0], fixed=True)
bB.state.pos = [-0.5*lengthOfBase,0.5*heightOfBase,0]
O.bodies.append(bB)
count=count+1
bC=Body()
bC.mask=3
wire=False
color=[0,0.5,1]
highlight=False
bC.shape=PotentialParticle(k=0.1, r=0.1*wallThickness,
R=0.5*heightOfBase,a=[1,-1,0,0,0,0], b=[0,0,1,-1,0,0], c=[0,0,0,0,1,-1],
d=[0.5*lengthOfBase-r,0.5*lengthOfBase-r,0.5*heightOfBase-r,0.5*heightOfBase-r,0.5*wallThickness-r,0.5*wallThickness-r],
id=count,isBoundary=True,color=color,wire=wire,highlight=highlight,AabbMinMax=True,
minAabb=1.02*Vector3(0.5*lengthOfBase,0.5*heightOfBase,0.4*wallThickness),maxAabb=1.02*Vector3(0.5*lengthOfBase,0.5*heightOfBase,0.4*wallThickness),maxAabbRotated=1.02*Vector3(0.5*lengthOfBase,0.5*heightOfBase,0.5*wallThickness),minAabbRotated=1.02*Vector3(0.5*lengthOfBase,0.5*heightOfBase,0.5*wallThickness),fixedNormal=False)
#length=lengthOfBase
V=lengthOfBase*heightOfBase*wallThickness
geomInertX=(1./12.)*V*(heightOfBase**2 + lengthOfBase**2)
geomInertY=(1./12.)*V*(wallThickness**2 + lengthOfBase**2)
geomInertZ=(1./12.)*V*(wallThickness**2 + heightOfBase**2)
utils._commonBodySetup(bC, V, Vector3(geomInertX,geomInertY,geomInertZ),
material='frictionless', pos=[0,0,0], fixed=True)
bC.state.pos = [0,0.5*heightOfBase,0.5*lengthOfBase]
O.bodies.append(bC)
count=count+1
bD=Body()
bD.mask=3
wire=False
color=[0,0.5,1]
highlight=False
bD.shape=PotentialParticle(k=0.1, r=0.1*wallThickness,
R=0.5*heightOfBase,a=[1,-1,0,0,0,0], b=[0,0,1,-1,0,0], c=[0,0,0,0,1,-1],
d=[0.5*lengthOfBase-r,0.5*lengthOfBase-r,0.5*heightOfBase-r,0.5*heightOfBase-r,0.5*wallThickness-r,0.5*wallThickness-r],
id=count,isBoundary=True,color=color,wire=wire,highlight=highlight,AabbMinMax=True,
minAabb=1.02*Vector3(0.5*lengthOfBase,0.5*heightOfBase,0.4*wallThickness),maxAabb=1.02*Vector3(0.5*lengthOfBase,0.5*heightOfBase,0.4*wallThickness),maxAabbRotated=1.02*Vector3(0.5*lengthOfBase,0.5*heightOfBase,0.5*wallThickness),minAabbRotated=1.02*Vector3(0.5*lengthOfBase,0.5*heightOfBase,0.5*wallThickness),fixedNormal=False)
#length=lengthOfBase
V=lengthOfBase*heightOfBase*wallThickness
geomInertX=(1./12.)*V*(heightOfBase**2 + lengthOfBase**2)
geomInertY=(1./12.)*V*(wallThickness**2 + lengthOfBase**2)
geomInertZ=(1./12.)*V*(wallThickness**2 + heightOfBase**2)
utils._commonBodySetup(bD, V, Vector3(geomInertX,geomInertY,geomInertZ),
material='frictionless', pos=[0,0,0], fixed=True)
bD.state.pos = [0,0.5*heightOfBase,-0.5*lengthOfBase]
O.bodies.append(bD)
escapeNo=0
def myAddPlotData():
global escapeNo
global wallThickness
global meanSize
uf=utils.unbalancedForce()
if isnan(uf):
uf = 1.0
KE = utils.kineticEnergy()
for b in O.bodies:
if b.state.pos[1] < -5.0*meanSize and
len(b.state.blockedDOFs)==0: #i.e. fixed==False
escapeNo = escapeNo+1
O.bodies.erase(b.id)
if O.iter>25000:
removeLid()
plot.addData(timeStep1=O.iter,timeStep2=O.iter,timeStep3=O.iter,timeStep4=O.iter,time=O.time,unbalancedForce=uf,kineticEn=KE,outsideNo=escapeNo)
from yade import plot
plot.plots={'timeStep1':('unbalancedForce'),'timeStep2':('kineticEn'),'time':('outsideNo')}
#plot.plot() #Uncomment to view plots
O.engines=O.engines+[PyRunner(iterPeriod=10,command='myAddPlotData()')]
def removeLid():
global lidID
if (O.bodies[lidID]):
O.bodies.erase(lidID)
O.dt = 0.2*sqrt(0.3*O.bodies[0].state.mass/1.0e8)
##Control the rendering quality
#Gl1_PotentialParticle.aabbEnlargeFactor=1.1
#Gl1_PotentialParticle.sizeX=30
#Gl1_PotentialParticle.sizeY=30
#Gl1_PotentialParticle.sizeZ=30
from yade import qt
qt.Controller()
v=qt.View()
O.saveTmp()
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