# encoding: utf-8
# example of use JCFpm classes : Law2_ScGeom_JCFpmPhys_JointedCohesiveFrictionalPM...
# a cubic rock massif, containing a rock joint with ~ 31 deg. dip angle. At one time, the mechanical properties of the joint are degraded, triggering a smooth sliding
# definition of a predicate for use of randomDensePack() function
from __future__ import print_function
from past.builtins import execfile
from yade import pack
dimModele = 10.0
pred = pack.inAlignedBox((0,0,0),(dimModele,dimModele,dimModele))
# the packing of spheres :
def mat(): return JCFpmMat(type=1,young=1e8,poisson=0.3,frictionAngle=radians(30),density=3000,tensileStrength=1e6,cohesion=1e6,jointNormalStiffness=1e7,jointShearStiffness=1e7,jointCohesion=1e6,jointFrictionAngle=radians(20),jointDilationAngle=0.0)
nSpheres = 3000.0
poros=0.13
rMeanSpheres = dimModele * pow(3.0/4.0*(1-poros)/(pi*nSpheres),1.0/3.0)
print('')
print('Creating a cubic sample of spheres (may take some time and cause warnings)')
print('')
sp = pack.randomDensePack(pred,radius=rMeanSpheres,rRelFuzz=0.3,memoizeDb='/tmp/gts-triax-packings.sqlite',returnSpherePack=True)
sp.toSimulation(color=(0.9,0.8,0.6),wire=False,material=mat)
print('')
print('Sample created !')
# Definition of the facets for joint's geometry
kw={'material':0}
kwBoxes={'color':[1,0,0],'wire':False,'dynamic':False,'material':0}
kwMeshes={'color':[1,1,0],'wire':True,'dynamic':False,'material':0}
O.bodies.append(
pack.regularHexa(
(pack.inSphere((0,0,4),2)-pack.inSphere((0,-2,5),2)) & pack.notInNotch(centerPoint=(0,0,4),edge=(0,1,0),normal=(-1,1,-1),aperture=.2)
,radius=rad,gap=gap,color=(0,1,0),material=0) # head
+[utils.sphere((.8,1.9,5),radius=.2,color=(.6,.6,.6),material=0),utils.sphere((-.8,1.9,5),radius=.2,color=(.6,.6,.6),material=0),utils.sphere((0,2.4,4),radius=.4,color=(1,0,0),material=0)] # eyes and nose
+pack.regularHexa(pack.inCylinder((-1,2.2,3.3),(1,2.2,3.3),2*rad),radius=rad,gap=gap/3,color=(0.929,0.412,0.412),material=0) #mouth
)
groundId=O.bodies.append(utils.facet([(12,0,-6),(0,12,-6,),(-12,-12,-6)],dynamic=False)) # ground
for part in [
pack.regularHexa (
pack.inAlignedBox((-2,-2,-2),(2,2,2))-pack.inCylinder((0,-2,0),(0,2,0),1),
radius=1.5*rad,gap=2*gap,color=(1,0,1),**kw), # body,
pack.regularOrtho(pack.inEllipsoid((-1,0,-4),(1,1,2)),radius=rad,gap=0,color=(0,1,1),**kw), # left leg
pack.regularHexa (pack.inCylinder((+1,1,-2.5),(0,3,-5),1),radius=rad,gap=gap,color=(0,1,1),**kw), # right leg
pack.regularHexa (pack.inHyperboloid((+2,0,1),(+6,0,0),1,.5),radius=rad,gap=gap,color=(0,0,1),**kw), # right hand
pack.regularOrtho(pack.inCylinder((-2,0,2),(-5,0,4),1),radius=rad,gap=gap,color=(0,0,1),**kw) # left hand
]: O.bodies.appendClumped(part)
# Example of geom.facetBox usage
oriBody = Quaternion(Vector3(0,0,1),(math.pi/3))
O.bodies.append(geom.facetBox((12,0,-6+0.9),(1,0.7,0.9),oriBody,**kwBoxes))
oriBody = Quaternion(Vector3(0,0,1),(math.pi/2))
O.bodies.append(geom.facetBox((0,12,-6+0.9),(1,0.7,0.9),oriBody,**kwBoxes))
sys.argv
) > 1: #we then assume N,M are provided as 1st and 2nd cmd line arguments
N = int(sys.argv[1])
M = int(sys.argv[2])
############ Build a scene (we use Yade's pre-filled scene) ############
# sequential grain colors
import colorsys
from yade import pack
colorScale = (Vector3(colorsys.hsv_to_rgb(value * 1.0 / numThreads, 1, 1))
for value in range(0, numThreads))
#generate packing
mn, mx = Vector3(0, 2, 0), Vector3(50, 180, 90)
pred = pack.inAlignedBox(mn, mx)
O.bodies.append(pack.regularHexa(
pred, radius=1.20,
gap=0)) #change radius for more spheres, r=0.45 --> ~1.5M particles
nspheres = len(O.bodies)
for b in O.bodies:
b.material.frictionAngle = 0.05
#print "len = ", nspheres
wallIds = aabbWalls([Vector3(0, -1, -0), Vector3(80, 360, 200)], thickness=0)
O.bodies.append(wallIds)
WALL_ID = wallIds[2]
#print "len of bodies = ", len(O.bodies)
collider.verletDist = 0.4
collider.targetInterv = 200
from yade import pack, plot from yade import export, ymport from yade import utils from yade import qt from yade import plot import sys,time ##################### ####### OBJ ####### ##################### O.materials.append(CohFrictMat(young=30000e6,poisson=0.3,density=3600,frictionAngle=radians(30),isCohesive=True,normalCohesion=1e100000000,shearCohesion=1e10000000,momentRotationLaw=True,etaRoll=0.1,label='spheres')) pred=pack.inAlignedBox((0.05,-0.5,-0.05),(0.1,0.5,0.05)) spheres=pack.regularHexa(pred,radius=0.01,gap=0) O.bodies.append(spheres) for b in O.bodies: b.state.vel=(-18,0,0) ################ ##box2 material## ################ idCA=FrictMat(density=2227,frictionAngle=radians(0.5),label='CA',young=30e9,poisson=0.15) O.materials.append(idCA) ############################ ####### BOX 2 ############## ############################
maxCorner = (10, 10, 10)
center = (5, 5, 5)
normal = (1, 1, 1)
from yade import pack, export
pred = pack.inAlignedBox(Vector3.Zero, maxCorner)
O.bodies.append(
pack.randomDensePack(pred, radius=1., rRelFuzz=.5, spheresInCell=500))
export.text('/tmp/test.txt')
# text2vtk and text2vtkSection function can be copy-pasted from yade/py/export.py into separate py file to avoid executing yade or to use pure python
export.text2vtk('/tmp/test.txt', '/tmp/test.vtk')
export.text2vtkSection('/tmp/test.txt',
'/tmp/testSection.vtk',
point=center,
normal=normal)
# now open paraview, click "Tools" menu -> "Python Shell", click "Run Script", choose "pv_section.py" from this directiory
# or just run python pv_section.py
# and enjoy :-)
jointNormalStiffness=5.e7,
jointShearStiffness=2.5e7,
jointCohesion=0.,
jointTensileStrength=0.,
jointFrictionAngle=radians(35.),
jointDilationAngle=0.0)
# --- Creating a sample of spheres
# definition of a predicate
from yade import pack
Lx = 10
Ly = 10
Lz = 6
pred = pack.inAlignedBox((0, 0, 0), (Lx, Ly, Lz))
# use of randomDensePack() function
nSpheres = 1500.0
poros = 0.13 # apparently the value of porosity of samples generated by pack.randomDensePack
rMeanSpheres = pow(Lx * Ly * Lz * 3.0 / 4.0 * (1 - poros) / (pi * nSpheres),
1.0 / 3.0)
print('\nGenerating sphere sample, be patient')
sp = pack.randomDensePack(pred,
radius=rMeanSpheres,
rRelFuzz=0.3,
memoizeDb='/tmp/gts-triax-packings.sqlite',
returnSpherePack=True)
sp.toSimulation(color=(0.9, 0.8, 0.6), wire=False, material=mat)
print('Sphere sample generated !')
# --- The joint surface : half of the height
R=D/2. H=2.*h mn,mx=Vector3(0,0,0),Vector3(1.01*D,1.01*D,1.3*H) young=1e6 #1e9 angfric = 30 O.materials.append(FrictMat(young=young,poisson=0.5,frictionAngle=0,density=0,label='walls')) O.materials.append(FrictMat(young=young,poisson=0.5,frictionAngle=radians(angfric),density=2600,label='sph')) walls=aabbWalls([mn,mx],thickness=0,material='walls') wallIds=O.bodies.append(walls) vect=[0, 1, 1.25, 2.25, 2.5, 3.5, 3.75, 4.75, 5., 6., 6.25, 7.25, 7.5] vect=1/7.25*numpy.array(vect) cuadr1=pack.inAlignedBox((0,0,H*vect[0]),(D,D,H*vect[1])) #grueso cuadr2=pack.inAlignedBox((0,0,H*vect[1]),(D,D,H*vect[2])) #fino cuadr3=pack.inAlignedBox((0,0,H*vect[2]),(D,D,H*vect[3])) #grueso cuadr4=pack.inAlignedBox((0,0,H*vect[3]),(D,D,H*vect[4])) #fino cuadr5=pack.inAlignedBox((0,0,H*vect[4]),(D,D,H*vect[5])) #grueso cuadr6=pack.inAlignedBox((0,0,H*vect[5]),(D,D,H*vect[6])) #fino cuadr7=pack.inAlignedBox((0,0,H*vect[6]),(D,D,H*vect[7])) #grueso cuadr8=pack.inAlignedBox((0,0,H*vect[7]),(D,D,H*vect[8])) #fino cuadr9=pack.inAlignedBox((0,0,H*vect[8]),(D,D,H*vect[9])) #grueso cuadr10=pack.inAlignedBox((0,0,H*vect[9]),(D,D,H*vect[10])) #fino cuadr11=pack.inAlignedBox((0,0,H*vect[10]),(D,D,H*vect[11])) #grueso cuadr12=pack.inAlignedBox((0,0,H*vect[11]),(D,D,H*vect[12])) #fino sph1=pack.randomDensePack(cuadr1,spheresInCell=1000,radius=rmean,rRelFuzz=Sd,returnSpherePack=True) sph2=pack.randomDensePack(cuadr2,spheresInCell=2000,radius=rmean/R1,rRelFuzz=Sd,returnSpherePack=True) sph3=pack.randomDensePack(cuadr3,spheresInCell=1000,radius=rmean,rRelFuzz=Sd,returnSpherePack=True)
# Mechanical properties of rock matrix and rock joint :
from __future__ import print_function
from past.builtins import execfile
def mat(): return JCFpmMat(type=1,young=15.e9,frictionAngle=radians(35),density=3000,poisson=0.35,tensileStrength=4.5e6,cohesion=45.e6,jointNormalStiffness=5.e7,jointShearStiffness=2.5e7,jointCohesion=0.,jointTensileStrength=0.,jointFrictionAngle=radians(35.),jointDilationAngle=0.0)
# --- Creating a sample of spheres
# definition of a predicate
from yade import pack
Lx = 10
Ly = 10
Lz = 6
pred = pack.inAlignedBox((0,0,0),(Lx,Ly,Lz))
# use of randomDensePack() function
nSpheres = 1500.0
poros=0.13 # apparently the value of porosity of samples generated by pack.randomDensePack
rMeanSpheres = pow(Lx*Ly*Lz*3.0/4.0*(1-poros)/(pi*nSpheres),1.0/3.0)
print('\nGenerating sphere sample, be patient')
sp = pack.randomDensePack(pred,radius=rMeanSpheres,rRelFuzz=0.3,memoizeDb='/tmp/gts-triax-packings.sqlite',returnSpherePack=True)
sp.toSimulation(color=(0.9,0.8,0.6),wire=False,material=mat)
print('Sphere sample generated !')
# --- The joint surface : half of the height
import gts
v1 = gts.Vertex(0 , 0 , Lz/2.0)
v2 = gts.Vertex(Lx, 0 , Lz/2.0)
v3 = gts.Vertex(Lx, Ly, Lz/2.0)
maxCorner = (10,10,10)
center = (5,5,5)
normal = (1,1,1)
from yade import pack, export
pred = pack.inAlignedBox(Vector3.Zero,maxCorner)
O.bodies.append(pack.randomDensePack(pred,radius=1.,rRelFuzz=.5,spheresInCell=500))
export.text('/tmp/test.txt')
# text2vtk and text2vtkSection function can be copy-pasted from yade/py/export.py into separate py file to avoid executing yade or to use pure python
export.text2vtk('/tmp/test.txt','/tmp/test.vtk')
export.text2vtkSection('/tmp/test.txt','/tmp/testSection.vtk',point=center,normal=normal)
# now open paraview, click "Tools" menu -> "Python Shell", click "Run Script", choose "pv_section.py" from this directiory
# or just run python pv_section.py
# and enjoy :-)
kw={'material':0}
kwBoxes={'color':[1,0,0],'wire':False,'dynamic':False,'material':0}
kwMeshes={'color':[1,1,0],'wire':True,'dynamic':False,'material':0}
O.bodies.append(
pack.regularHexa(
(pack.inSphere((0,0,4),2)-pack.inSphere((0,-2,5),2)) & pack.notInNotch(centerPoint=(0,0,4),edge=(0,1,0),normal=(-1,1,-1),aperture=.2)
,radius=rad,gap=gap,color=(0,1,0),material=0) # head
+[sphere((.8,1.9,5),radius=.2,color=(.6,.6,.6),material=0),sphere((-.8,1.9,5),radius=.2,color=(.6,.6,.6),material=0),sphere((0,2.4,4),radius=.4,color=(1,0,0),material=0)] # eyes and nose
+pack.regularHexa(pack.inCylinder((-1,2.2,3.3),(1,2.2,3.3),2*rad),radius=rad,gap=gap/3,color=(0.929,0.412,0.412),material=0) #mouth
)
groundId=O.bodies.append(facet([(12,0,-6),(0,12,-6,),(-12,-12,-6)],dynamic=False)) # ground
for part in [
pack.regularHexa (
pack.inAlignedBox((-2,-2,-2),(2,2,2))-pack.inCylinder((0,-2,0),(0,2,0),1),
radius=1.5*rad,gap=2*gap,color=(1,0,1),**kw), # body,
pack.regularOrtho(pack.inEllipsoid((-1,0,-4),(1,1,2)),radius=rad,gap=0,color=(0,1,1),**kw), # left leg
pack.regularHexa (pack.inCylinder((+1,1,-2.5),(0,3,-5),1),radius=rad,gap=gap,color=(0,1,1),**kw), # right leg
pack.regularHexa (pack.inHyperboloid((+2,0,1),(+6,0,0),1,.5),radius=rad,gap=gap,color=(0,0,1),**kw), # right hand
pack.regularOrtho(pack.inCylinder((-2,0,2),(-5,0,4),1),radius=rad,gap=gap,color=(0,0,1),**kw) # left hand
]: O.bodies.appendClumped(part)
# Example of geom.facetBox usage
oriBody = Quaternion(Vector3(0,0,1),(pi/3))
O.bodies.append(geom.facetBox((12,0,-6+0.9),(1,0.7,0.9),oriBody,**kwBoxes))
oriBody = Quaternion(Vector3(0,0,1),(pi/2))
O.bodies.append(geom.facetBox((0,12,-6+0.9),(1,0.7,0.9),oriBody,**kwBoxes))
O.cell.refSize = (2, 2, 2)
from yade import pack, plot
# the "if 0:" block will be never executed, therefore the "else:" block will be
# to use cloud instead of regular packing, change to "if 1:" or something similar
if 0:
# create cloud of spheres and insert them into the simulation
# we give corners, mean radius, radius variation
sp = pack.SpherePack()
sp.makeCloud((0, 0, 0), (2, 2, 2), rMean=0.1, rRelFuzz=0.6, periodic=True)
# insert the packing into the simulation
sp.toSimulation(color=(0, 0, 1)) # pure blue
else:
# in this case, add dense packing
O.bodies.append(pack.regularHexa(pack.inAlignedBox((0, 0, 0), (2, 2, 2)), radius=0.1, gap=0, color=(0, 0, 1)))
# create "dense" packing by setting friction to zero initially
O.materials[0].frictionAngle = 0
# simulation loop (will be run at every step)
O.engines = [
ForceResetter(),
InsertionSortCollider([Bo1_Sphere_Aabb()]),
InteractionLoop(
[Ig2_Sphere_Sphere_L3Geom()], [Ip2_FrictMat_FrictMat_FrictPhys()], [Law2_L3Geom_FrictPhys_ElPerfPl()]
),
NewtonIntegrator(damping=0.4),
# run checkStress function (defined below) every second
# the label is arbitrary, and is used later to refer to this engine
PyRunner(command="checkStress()", realPeriod=1, label="checker"),
FrictMat(young=young,
poisson=0.5,
frictionAngle=radians(3),
density=2600,
label='spheres'))
O.materials.append(
FrictMat(young=young,
poisson=0.5,
frictionAngle=0,
density=0,
label='walls'))
walls = aabbWalls([mn, mx], thickness=0, material='walls')
wallIds = O.bodies.append(walls)
O.bodies.append(
pack.regularOrtho(pack.inAlignedBox(mn, mx),
radius=rad,
gap=-1e-8,
material='spheres'))
print('num bodies ', len(O.bodies))
ThermalEngine = ThermalEngine(dead=1, label='thermal')
newton = NewtonIntegrator(damping=0.2)
intRadius = 1
O.engines = [
ForceResetter(),
InsertionSortCollider(
[Bo1_Sphere_Aabb(aabbEnlargeFactor=intRadius),
Bo1_Box_Aabb()]),
density=7000,
label='frictionlessWalls'))
JCFmat = O.materials.append(
JCFpmMat(young=young,
cohesion=cohesion,
density=density,
frictionAngle=radians(finalFricDegree),
tensileStrength=sigmaT,
poisson=poisson,
label='JCFmat'))
#### preprocessing to get dimensions
numSpheres = 10000
pred = pack.inAlignedBox(
mn, mx) #- pack.inCylinder((0, -.01, 0), (0, .01, 0), 0.04)
sp = pack.randomDensePack(pred,
radius=0.0015,
spheresInCell=numSpheres,
rRelFuzz=0.25,
returnSpherePack=True)
sp.toSimulation()
export.textExt('240x80mmBeam_1.5mmrad.spheres', 'x_y_z_r')
dim = utils.aabbExtrema()
xinf = dim[0][0]
xsup = dim[1][0]
X = xsup - xinf
yinf = dim[0][1]
ysup = dim[1][1]
Y = ysup - yinf
] # eyes and nose
+ pack.regularHexa(pack.inCylinder((-1, 2.2, 3.3), (1, 2.2, 3.3), 2 * rad),
radius=rad,
gap=gap / 3,
color=(0.929, 0.412, 0.412),
material=0) #mouth
)
groundId = O.bodies.append(
utils.facet([(12, 0, -6), (
0,
12,
-6,
), (-12, -12, -6)], dynamic=False)) # ground
for part in [
pack.regularHexa(pack.inAlignedBox(
(-2, -2, -2), (2, 2, 2)) - pack.inCylinder((0, -2, 0),
(0, 2, 0), 1),
radius=1.5 * rad,
gap=2 * gap,
color=(1, 0, 1),
**kw), # body,
pack.regularOrtho(pack.inEllipsoid((-1, 0, -4), (1, 1, 2)),
radius=rad,
gap=0,
color=(0, 1, 1),
**kw), # left leg
pack.regularHexa(pack.inCylinder((+1, 1, -2.5), (0, 3, -5), 1),
radius=rad,
gap=gap,
color=(0, 1, 1),
**kw), # right leg
from yade import pack, export
pred = pack.inAlignedBox((0, 0, 0), (10, 10, 10))
O.bodies.append(
pack.randomDensePack(pred,
radius=1.,
rRelFuzz=.5,
spheresInCell=500,
memoizeDb='/tmp/pack.db'))
export.textExt('/tmp/test.txt',
format='x_y_z_r_attrs',
attrs=('b.state.pos.norm()', 'b.state.pos'),
comment='dstN dstV_x dstV_y dstV_z')
# text2vtk and text2vtkSection function can be copy-pasted from yade/py/export.py into separate py file to avoid executing yade or to use pure python
export.text2vtk('/tmp/test.txt', '/tmp/test.vtk')
export.text2vtkSection('/tmp/test.txt',
'/tmp/testSection.vtk',
point=(5, 5, 5),
normal=(1, 1, 1))
from yade import pack, plot
# the "if 0:" block will be never executed, therefore the "else:" block will be
# to use cloud instead of regular packing, change to "if 1:" or something similar
if 0:
# create cloud of spheres and insert them into the simulation
# we give corners, mean radius, radius variation
sp = pack.SpherePack()
sp.makeCloud((0, 0, 0), (2, 2, 2), rMean=.1, rRelFuzz=.6, periodic=True)
# insert the packing into the simulation
sp.toSimulation(color=(0, 0, 1)) # pure blue
else:
# in this case, add dense packing
O.bodies.append(
pack.regularHexa(pack.inAlignedBox((0, 0, 0), (2, 2, 2)),
radius=.1,
gap=0,
color=(0, 0, 1)))
# create "dense" packing by setting friction to zero initially
O.materials[0].frictionAngle = 0
# simulation loop (will be run at every step)
O.engines = [
ForceResetter(),
InsertionSortCollider([Bo1_Sphere_Aabb()]),
InteractionLoop([Ig2_Sphere_Sphere_ScGeom()],
[Ip2_FrictMat_FrictMat_FrictPhys()],
[Law2_ScGeom_FrictPhys_CundallStrack()]),
NewtonIntegrator(damping=.4),
from yade import pack, export
pred = pack.inAlignedBox((0,0,0),(10,10,10))
O.bodies.append(pack.randomDensePack(pred,radius=1.,rRelFuzz=.5,spheresInCell=500,memoizeDb='/tmp/pack.db'))
export.textExt('/tmp/test.txt',format='x_y_z_r_attrs',attrs=('b.state.pos.norm()','b.state.pos'),comment='dstN dstV_x dstV_y dstV_z')
# text2vtk and text2vtkSection function can be copy-pasted from yade/py/export.py into separate py file to avoid executing yade or to use pure python
export.text2vtk('/tmp/test.txt','/tmp/test.vtk')
export.text2vtkSection('/tmp/test.txt','/tmp/testSection.vtk',point=(5,5,5),normal=(1,1,1))
# now open paraview, click "Tools" menu -> "Python Shell", click "Run Script", choose "pv_section.py" from this directiory
# or just run python pv_section.py
# and enjoy :-)
# encoding: utf-8
# example of use JCFpm classes : Law2_ScGeom_JCFpmPhys_JointedCohesiveFrictionalPM...
# a cubic rock massif, containing a rock joint with ~ 31 deg. dip angle. At one time, the mechanical properties of the joint are degraded, triggering a smooth sliding
# definition of a predicate for use of randomDensePack() function
from __future__ import print_function
from past.builtins import execfile
from yade import pack
dimModele = 10.0
pred = pack.inAlignedBox((0, 0, 0), (dimModele, dimModele, dimModele))
# the packing of spheres :
def mat():
return JCFpmMat(type=1,
young=1e8,
poisson=0.3,
frictionAngle=radians(30),
density=3000,
tensileStrength=1e6,
cohesion=1e6,
jointNormalStiffness=1e7,
jointShearStiffness=1e7,
jointCohesion=1e6,
jointFrictionAngle=radians(20),
jointDilationAngle=0.0)
# materials
concMat = O.materials.append(
CpmMat(young=young,
frictionAngle=frictionAngle,
poisson=poisson,
sigmaT=sigmaT,
epsCrackOnset=epsCrackOnset,
relDuctility=relDuctility))
frictMat = O.materials.append(
FrictMat(young=young, poisson=poisson, frictionAngle=frictionAngle))
# spheres
pred = pack.inCylinder(
(0, 0, 0),
(0, 0, height), .5 * width) if testType == 'cyl' else pack.inAlignedBox(
(-.5 * width, -.5 * width, 0),
(.5 * width, .5 * width, height)) if testType == 'cube' else None
sp = SpherePack()
sp = pack.randomDensePack(pred,
spheresInCell=2000,
radius=rParticle,
memoizeDb='/tmp/triaxTestOnCylinder.sqlite',
returnSpherePack=True)
spheres = sp.toSimulation(color=(0, 1, 1), material=concMat)
# bottom and top of specimen. Will have prescribed velocity
bot = [
O.bodies[s] for s in spheres
if O.bodies[s].state.pos[2] < rParticle * bcCoeff
]
top = [
# this script demonstrates how to benchmark using timingEnabled: how to measure how much time each module takes.
from yade import pack, timing
#O.bodies.append([ sphere((0.2,0,0),.5,fixed=True), sphere((0.2,0.0,1.01),.5), ])
O.bodies.append(
pack.regularHexa(pack.inAlignedBox((0, 0, 0), (10, 10, 1)),
radius=.5,
gap=0,
fixed=True))
O.bodies.append(
pack.regularOrtho(pack.inAlignedBox((3, 3, 3), (7, 7, 4)),
radius=.05,
gap=0))
O.engines = [
ForceResetter(),
FlatGridCollider(step=.2,
aabbMin=(0, 0, 0),
aabbMax=(10, 10, 5),
verletDist=0.005),
# InsertionSortCollider([Bo1_Sphere_Aabb()],sweepLength=0.005),
InteractionLoop(
[Ig2_Sphere_Sphere_ScGeom()],
[Ip2_FrictMat_FrictMat_FrictPhys()],
[Law2_ScGeom_FrictPhys_CundallStrack()],
),
NewtonIntegrator(damping=0.4, gravity=[0, 0, -10]),
]
O.dt = .6 * PWaveTimeStep()
O.saveTmp()
#O.step()
#while True:
# O.step()
R=D/2. H=2.*h mn,mx=Vector3(0,0,0),Vector3(1.01*D,1.01*D,1.3*H) young=1e6 #1e9 angfric = 30 O.materials.append(FrictMat(young=young,poisson=0.5,frictionAngle=0,density=0,label='walls')) O.materials.append(FrictMat(young=young,poisson=0.5,frictionAngle=radians(angfric),density=2600,label='sph')) walls=aabbWalls([mn,mx],thickness=0,material='walls') wallIds=O.bodies.append(walls) vect=[0, 1, 1.25, 2.25, 2.5, 3.5, 3.75] vect=1/3.75*numpy.array(vect) cuadr1=pack.inAlignedBox((0,0,H*vect[0]),(D,D,H*vect[1])) #grueso cuadr2=pack.inAlignedBox((0,0,H*vect[1]),(D,D,H*vect[2])) #fino cuadr3=pack.inAlignedBox((0,0,H*vect[2]),(D,D,H*vect[3])) #grueso cuadr4=pack.inAlignedBox((0,0,H*vect[3]),(D,D,H*vect[4])) #fino cuadr5=pack.inAlignedBox((0,0,H*vect[4]),(D,D,H*vect[5])) #grueso cuadr6=pack.inAlignedBox((0,0,H*vect[5]),(D,D,H*vect[6])) #fino sph1=pack.randomDensePack(cuadr1,spheresInCell=1000,radius=rmean,rRelFuzz=Sd,returnSpherePack=True) sph2=pack.randomDensePack(cuadr2,spheresInCell=2000,radius=rmean/R1,rRelFuzz=Sd,returnSpherePack=True) sph3=pack.randomDensePack(cuadr3,spheresInCell=1000,radius=rmean,rRelFuzz=Sd,returnSpherePack=True) sph4=pack.randomDensePack(cuadr4,spheresInCell=2000,radius=rmean/R1,rRelFuzz=Sd,returnSpherePack=True) sph5=pack.randomDensePack(cuadr5,spheresInCell=1000,radius=rmean,rRelFuzz=Sd,returnSpherePack=True) sph6=pack.randomDensePack(cuadr6,spheresInCell=2000,radius=rmean/R1,rRelFuzz=Sd,returnSpherePack=True) sph1.toSimulation(material='sph') sph2.toSimulation(material='sph')
from yade import utils,pack,timing
#O.bodies.append([ utils.sphere((0.2,0,0),.5,fixed=True), utils.sphere((0.2,0.0,1.01),.5), ])
O.bodies.append(pack.regularHexa(pack.inAlignedBox((0,0,0),(10,10,1)),radius=.5,gap=0,fixed=True))
O.bodies.append(pack.regularOrtho(pack.inAlignedBox((3,3,3),(7,7,4)),radius=.05,gap=0))
O.engines=[
ForceResetter(),
FlatGridCollider(step=.2,aabbMin=(0,0,0),aabbMax=(10,10,5),verletDist=0.005),
# InsertionSortCollider([Bo1_Sphere_Aabb()],sweepLength=0.005),
InteractionLoop(
[Ig2_Sphere_Sphere_Dem3DofGeom()],
[Ip2_FrictMat_FrictMat_FrictPhys()],
[Law2_Dem3DofGeom_FrictPhys_CundallStrack()],
),
NewtonIntegrator(damping=0.4,gravity=[0,0,-10]),
]
O.dt=.6*utils.PWaveTimeStep()
O.saveTmp()
#O.step()
#while True:
# O.step()
# if len(O.interactions)>0 or O.bodies[1].state.pos[2]<.97: break
print('This will take a while, drink a coffee ;)')
O.timingEnabled=True
O.run(5000,True)
timing.stats()
import sys
#sys.exit(0)
runInGui = True, ) from yade.params.table import * assert testType in ['cyl','cube'] # materials concMat = O.materials.append(CpmMat( young=young,frictionAngle=frictionAngle,poisson=poisson,sigmaT=sigmaT, epsCrackOnset=epsCrackOnset,relDuctility=relDuctility )) frictMat = O.materials.append(FrictMat( young=young,poisson=poisson,frictionAngle=frictionAngle )) # spheres pred = pack.inCylinder((0,0,0),(0,0,height),.5*width) if testType=='cyl' else pack.inAlignedBox((-.5*width,-.5*width,0),(.5*width,.5*width,height)) if testType=='cube' else None sp=SpherePack() sp = pack.randomDensePack(pred,spheresInCell=2000,radius=rParticle,memoizeDb='/tmp/triaxTestOnCylinder.sqlite',returnSpherePack=True) spheres=sp.toSimulation(color=(0,1,1),material=concMat) # bottom and top of specimen. Will have prescribed velocity bot = [O.bodies[s] for s in spheres if O.bodies[s].state.pos[2]<rParticle*bcCoeff] top = [O.bodies[s] for s in spheres if O.bodies[s].state.pos[2]>height-rParticle*bcCoeff] vel = strainRate*(height-rParticle*2*bcCoeff) for s in bot: s.shape.color = (1,0,0) s.state.blockedDOFs = 'xyzXYZ' s.state.vel = (0,0,-vel) for s in top: s.shape.color = Vector3(0,1,0) s.state.blockedDOFs = 'xyzXYZ'
from yade import pack,plot # the "if 0:" block will be never executed, therefore the "else:" block will be # to use cloud instead of regular packing, change to "if 1:" or something similar if 0: # create cloud of spheres and insert them into the simulation # we give corners, mean radius, radius variation sp=pack.SpherePack() sp.makeCloud((0,0,0),(2,2,2),rMean=.1,rRelFuzz=.6,periodic=True) # insert the packing into the simulation sp.toSimulation(color=(0,0,1)) # pure blue else: # in this case, add dense packing O.bodies.append( pack.regularHexa(pack.inAlignedBox((0,0,0),(2,2,2)),radius=.1,gap=0,color=(0,0,1)) ) # create "dense" packing by setting friction to zero initially O.materials[0].frictionAngle=0 # simulation loop (will be run at every step) O.engines=[ ForceResetter(), InsertionSortCollider([Bo1_Sphere_Aabb()]), InteractionLoop( [Ig2_Sphere_Sphere_ScGeom()], [Ip2_FrictMat_FrictMat_FrictPhys()], [Law2_ScGeom_FrictPhys_CundallStrack()] ), NewtonIntegrator(damping=.4),
from yade import pack """Simple script to create tunnel with random dense packing of spheres. The tunnel is difference between an axis-aligned box and cylinder, or which axis is going through the bottom wall (-z) of the box. The tunnel hole is oriented along +y, the face is in the xz plane. The first you run this scipt, a few minutes is neede to generate the packing. It is saved in /tmp/triaxPackCache.sqlite and at next time it will be only loaded (fast). """ # set some geometry parameters: domain box size, tunnel radius, radius of particles boxSize=Vector3(5,8,5) tunnelRad=2 rSphere=.1 # construct spatial predicate as difference of box and cylinder: # (see scripts/test/pack-predicates.py for details) # # http://beta.arcig.cz/~eudoxos/yade/epydoc/yade._packPredicates.inAlignedBox-class.html # http://beta.arcig.cz/~eudoxos/yade/epydoc/yade._packPredicates.inCylinder-class.html pred=pack.inAlignedBox((-.5*boxSize[0],-.5*boxSize[1],0),(.5*boxSize[0],.5*boxSize[1],boxSize[2])) - pack.inCylinder((-.5*boxSize[0],0,0),(.5*boxSize[0],0,0),tunnelRad) # Use the predicate to generate sphere packing inside # # http://beta.arcig.cz/~eudoxos/yade/epydoc/yade.pack-module.html#randomDensePack O.bodies.append(pack.randomDensePack(pred,radius=rSphere,rRelFuzz=.3,memoizeDb='/tmp/triaxPackCache.sqlite',spheresInCell=3000)) from yade import qt qt.Controller() qt.View()