# -*- coding: utf-8 -*-
# encoding: utf-8
from yade import utils, ymport, qt
#### logging
from yade import log
log.setLevel('Law2_ScGeom_WirePhys_WirePM',log.TRACE) # must compile with debug option to get logs
#log.setLevel('Law2_ScGeom_WirePhys_WirePM',log.DEBUG)
#log.setLevel('',log.WARN)
## definition of some colors for colored text output in terminal
BLUE = '\033[94m'
GREEN = '\033[92m'
YELLOW = '\033[93m'
RED = '\033[91m'
BLACK = '\033[0m'
#### short description of script
print BLUE+'Simple test for two particles to test contact law with '+RED+'UniaxialStrainer'+BLUE+'.'+BLACK
#### define parameters for the net
# mesh opening size
mos = 80./1000.
a = mos/sqrt(3)
# wire diameter
d = 2.7/1000.
# particle radius
radius = d*5.
# define piecewise lineare stress-strain curve
strainStressValues=[(0.0019230769,2.5e8),(0.0192,3.2195e8),(0.05,3.8292e8),(0.15,5.1219e8),(0.25,5.5854e8),(0.3,5.6585e8),(0.35,5.6585e8)]
# elastic material properties
qt.Controller()
qt.View()
O.engines=[
ForceResetter(),
InsertionSortCollider([Bo1_Sphere_Aabb(),Bo1_Facet_Aabb(),Bo1_Wall_Aabb()]),
InteractionLoop(
[Ig2_Sphere_Sphere_Dem3DofGeom(),Ig2_Facet_Sphere_Dem3DofGeom(),Ig2_Wall_Sphere_Dem3DofGeom()],
[Ip2_FrictMat_FrictMat_FrictPhys()],
[Law2_Dem3DofGeom_FrictPhys_CundallStrack()],
),
GravityEngine(gravity=[1e2,1e2,1e2]),
NewtonIntegrator(damping=0.01),
]
O.dt=utils.PWaveTimeStep()
O.save('/tmp/a.xml')
O.saveTmp()
from yade import log
log.setLevel('Ig2_Wall_Sphere_Dem3DofGeom',log.TRACE)
O.run()
#O.bodies.append([
# utils.facet([[-1,-1,0],[1,-1,0],[0,1,0]],dynamic=False,color=[1,0,0],young=1e3),
# utils.facet([[1,-1,0],[0,1,0,],[1,.5,.5]],dynamic=False,young=1e3)
#])
#import random
O.periodic=True
O.cell.refSize=(20,20,10)
from yade import pack,log,timing
O.materials.append(FrictMat(young=30e9,density=2400))
p=pack.SpherePack()
p.makeCloud(Vector3().ZERO,O.cell.refSize,1,.5,700,True)
for sph in p:
O.bodies.append(utils.sphere(sph[0],sph[1]))
log.setLevel("PeriIsoCompressor",log.DEBUG)
O.timingEnabled=True
O.engines=[
ForceResetter(),
InsertionSortCollider([Bo1_Sphere_Aabb()]),
InteractionLoop(
[Ig2_Sphere_Sphere_Dem3DofGeom()],
[Ip2_FrictMat_FrictMat_FrictPhys()],
[Law2_Dem3DofGeom_FrictPhys_CundallStrack()],
),
PeriIsoCompressor(charLen=.5,stresses=[-50e9,-1e8],doneHook="print 'FINISHED'; O.pause() ",keepProportions=True),
NewtonIntegrator(damping=.4,homotheticCellResize=1)
]
O.dt=utils.PWaveTimeStep()
O.saveTmp()
print O.cell.refSize
from yade import qt; qt.Controller(); qt.View()
O.run()
O.wait()
timing.stats()
#while True:
# O.step()
""" Playground for tuning collider strides depending on maximum velocity. """
from yade import timing,log
import os.path
loadFrom='/tmp/triax.xml'
#if not os.path.exists(loadFrom):
TriaxialTest(numberOfGrains=2000,noFiles=True).generate(loadFrom)
O.load(loadFrom)
log.setLevel('TriaxialCompressionEngine',log.WARN) # shut up
log.setLevel('InsertionSortCollider',log.DEBUG)
collider=utils.typedEngine('InsertionSortCollider')
newton=utils.typedEngine('NewtonIntegrator')
# use striding; say "if 0:" to disable striding and compare to regular runs
if 1:
# length by which bboxes will be made larger
collider.verletDist=.2*O.bodies[100].shape.radius
O.step() # filter out initialization
O.timingEnabled=True
totalTime=0
# run a few times 500 steps, show timings to see what is the trend
# notably, the percentage of collider time should decrease as the max velocity decreases as well
for i in range(0,5):
O.run(1000,True)
timing.stats()
totalTime+=sum([e.execTime for e in O.engines])
print 'Number of interactions: %d (real ratio: %g)'%(len(O.interactions),float(O.interactions.countReal())/len(O.interactions))
print '======================================================='
timing.reset()
for s in sp: O.bodies.append(utils.sphere(s[0],s[1]))
O.dt=utils.PWaveTimeStep()
O.run(); O.wait()
sp=SpherePack(); sp.fromSimulation()
#print 'Resulting cellSize',sp.cellSize,'proportions',sp.cellSize[1]/sp.cellSize[0],sp.cellSize[2]/sp.cellSize[0]
# repetition to the required cell size will be done below, after memoizing the result
else:
assumedFinalDensity=0.6
V=(4/3)*pi*radius**3; N=assumedFinalDensity*fullDim[0]*fullDim[1]*fullDim[2]/V;
TriaxialTest(
numberOfGrains=int(N),radiusMean=radius,radiusStdDev=rRelFuzz,
# upperCorner is just size ratio, if radiusMean is specified
upperCorner=fullDim,
## no need to touch any the following
noFiles=True,lowerCorner=[0,0,0],sigmaIsoCompaction=1e7,sigmaLateralConfinement=1e3,StabilityCriterion=.05,strainRate=.2,thickness=-1,maxWallVelocity=.1,wallOversizeFactor=1.5,autoUnload=True,autoCompressionActivation=False).load()
log.setLevel('TriaxialCompressionEngine',log.WARN)
O.run(); O.wait()
sp=SpherePack(); sp.fromSimulation()
O.switchScene() ### !!
_memoizePacking(memoizeDb,sp,radius,rRelFuzz,wantPeri,fullDim)
if wantPeri: sp.cellFill(Vector3(fullDim[0],fullDim[1],fullDim[2]))
if orientation:
sp.cellSize=(0,0,0); # reset periodicity to avoid warning when rotating periodic packing
sp.rotate(*orientation.toAxisAngle())
return filterSpherePack(predicate,sp,material=material,color=color,returnSpherePack=returnSpherePack)
def randomPeriPack(radius,initSize,rRelFuzz=0.0,memoizeDb=None,noPrint=False):
"""Generate periodic dense packing.
A cell of initSize is stuffed with as many spheres as possible, then we run periodic compression with PeriIsoCompressor, just like with
randomDensePack.
"""Script that shrinks the periodic cell progressively.
It prints strain and average stress (computed from total volume force)
once in a while."""
from yade import log,timing
log.setLevel("InsertionSortCollider",log.TRACE)
O.engines=[
ForceResetter(),
InsertionSortCollider([Bo1_Sphere_Aabb()]),
InteractionLoop(
[Ig2_Sphere_Sphere_Dem3DofGeom()],
[Ip2_FrictMat_FrictMat_FrictPhys()],
[Law2_Dem3DofGeom_FrictPhys_CundallStrack()],
),
NewtonIntegrator(damping=.6,homotheticCellResize=1)
]
import random
for i in xrange(250):
O.bodies.append(utils.sphere(Vector3(10*random.random(),10*random.random(),10*random.random()),.5+random.random()))
cubeSize=20
# absolute positioning of the cell is not important
O.periodic=True
O.cell.refSize=(cubeSize,cubeSize,cubeSize)
O.dt=utils.PWaveTimeStep()
O.saveTmp()
from yade import qt
qt.Controller(); qt.View()
O.run(200,True)
rate=-1e-3*cubeSize/(O.dt*200)*Matrix3.Identity
O.cell.velGrad=rate
for i in range(0,25):
O.run(2000,True)
# coding: utf-8
# 2009 © Václav Šmilauer <*****@*****.**>
"Test and demonstrate use of PeriTriaxController."
from yade import *
from yade import pack,log,qt
log.setLevel('PeriTriaxController',log.TRACE)
O.periodic=True
O.cell.setBox(.1,.1,.1)
#O.cell.Hsize=Matrix3(0.1,0,0, 0,0.1,0, 0,0,0.1)
sp=pack.SpherePack()
radius=5e-3
num=sp.makeCloud((0,0,0),(.1,.1,.1),radius,.2,500,periodic=True) # min,max,radius,rRelFuzz,spheresInCell,periodic
O.bodies.append([utils.sphere(s[0],s[1]) for s in sp])
O.engines=[
ForceResetter(),
InsertionSortCollider([Bo1_Sphere_Aabb()],verletDist=.05*radius),
InteractionLoop(
[Ig2_Sphere_Sphere_Dem3DofGeom()],
[Ip2_FrictMat_FrictMat_FrictPhys()],
[Law2_Dem3DofGeom_FrictPhys_CundallStrack()]
),
PeriTriaxController(dynCell=True,mass=0.2,maxUnbalanced=0.01,relStressTol=0.02,goal=[-1e4,-1e4,0],stressMask=3,globUpdate=5,maxStrainRate=[1.,1.,1.],doneHook='triaxDone()',label='triax'),
NewtonIntegrator(damping=.2),
]
phase=0
def triaxDone():
global phase
if phase==0:
from yade import pack,log,timing,utils
log.setLevel("SubdomainBalancer",log.INFO)
#log.setLevel("BodyContainer",log.TRACE)
utils.readParamsFromTable(noTableOk=True,num=12000)
import yade.params.table
sp=pack.SpherePack()
sp.makeCloud((0,0,0),(1,1,1),.03*((12000./yade.params.table.num)**(1/3.)),.5)
sp.toSimulation()
O.bodies.append(utils.wall((0,0,0),axis=2))
O.bodies.append(utils.wall((0,0,0),axis=1))
#O.bodies.append(utils.wall((0,0,0),axis=0))
#O.bodies.append(utils.wall((0,2,0),axis=1))
#O.bodies.append(utils.wall((2,0,0),axis=0))
O.engines=([SubdomainBalancer(axesOrder='xyz',colorize=True)] if 'SubdomainBalancer' in dir() else [])+[
ForceResetter(),
InsertionSortCollider([Bo1_Sphere_Aabb(),Bo1_Wall_Aabb()],verletDist=.05*.05),
InteractionLoop([Ig2_Sphere_Sphere_ScGeom(),Ig2_Wall_Sphere_ScGeom()],[Ip2_FrictMat_FrictMat_FrictPhys()],[Law2_ScGeom_FrictPhys_CundallStrack()]),
NewtonIntegrator(gravity=(0,0,-10)),
#PyRunner(iterPeriod=5000,command='O.pause(); timing.stats();')
]
O.dt=utils.PWaveTimeStep()
O.timingEnabled=True
#O.step(); #O.run(10000,True)
timing.stats()
from yade import qt
qt.View()
#O.step()
#O.run(5000,True)
import time
# change this line to load your reference simulation
O.load2('ref.boost.bin.gz')
base='~sim~'
from yade import log
log.setLevel('Omega',log.WARN)
# http://blogmag.net/blog/read/38/Print_human_readable_file_size
def sizeof_fmt(num):
for x in ['bytes','KB','MB','GB','TB']:
if num<1024.0: return "%3.1f%s"%(num,x)
num/=1024.0
def io(ext,load,noBoost=False):
t0=time.time()
f=base+('.yade.' if noBoost else '.boost.')+ext
((O.load if noBoost else O.load2) if load else (O.save if noBoost else O.save2))(f)
print ('Loaded' if load else 'Saved '),('yade ' if noBoost else 'boost'),'%-7s '%ext,'%7s'%sizeof_fmt(os.path.getsize(f)),'%.1fs'%(time.time()-t0)
for ext in ['xml','xml.bz2']:
io(ext,False,True)
io(ext,True,True)
for ext in ['xml','xml.gz','xml.bz2','bin','bin.gz','bin.bz2']:
io(ext,False)
io(ext,True)
# encoding: utf-8
# 2011 © Bruno Chareyre <*****@*****.**>
# Check the result of a triaxial test on a dense 100 spheres packing with position defined,
# comparing stresses at the "peak" state. The initial positions have been generated by
# internal compaction without friction, so that it is initially at equilibrium without shear forces.
# Positions and reference results are in data folder.
from yade import pack,log,utils,export,plot
import math,os,sys
log.setLevel('TriaxialCompressionEngine',log.ERROR)
tolerance=0.01
interactive=False
errors=0
tt=TriaxialTest(internalCompaction=True,numberOfGrains=100,compactionFrictionDeg=0,sphereFrictionDeg=30,importFilename=checksPath+'/data/checkTestTriax.spheres')
tt.generate("checkTest.yade")
O.load("checkTest.yade")
O.run(2020,True)
if interactive:
print O.engines[4].stress(0)[1],O.engines[4].stress(1)[1], O.engines[4].stress(2)[0], O.engines[4].stress(3)[0], O.engines[4].stress(4)[2], O.engines[4].stress(5)[2]
os.system('gnuplot -e "plot \'./WallStresses\' using 1:3; replot'+checksPath+'\'/data/WallStressesCheckTest\' using 1:3; replot '+checksPath+'\'/data/WallStresses\' using 1:4; replot '+checksPath+'\'/data/WallStressesCheckTest\' using 1:4; pause -1"')
if abs((O.engines[4].stress(3)[1]-107157.2)/107157.2)>tolerance :
print "Triaxial checkTest: difference on peak stress"
errors+=1
if abs((O.engines[4].stress(1)[0]-50058.7)/50058.7)>tolerance :
print "Triaxial checkTest: difference on confining stress"
errors+=1
if (errors):
resultStatus +=1 #Test is failed