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#############################################################
## ##
## Copyright (c) 2003-2011 by The University of Queensland ##
## Earth Systems Science Computational Centre (ESSCC) ##
## http://www.uq.edu.au/esscc ##
## ##
## Primary Business: Brisbane, Queensland, Australia ##
## Licensed under the Open Software License version 3.0 ##
## http://www.opensource.org/licenses/osl-3.0.php ##
## ##
#############################################################
"""
Defines L{runSimulation} function which executes compression simulation.
"""
from esys.lsm import *
from esys.lsm.util import Vec3, BoundingBox, InstallInfo
from time import *
class Loading(Runnable):
"""
Objects of this class provide the loading mechanism for a compression
simulation.
"""
def __init__(self,lsm):
Runnable.__init__(self)
self.theLSM=lsm
def run(self):
"""
Moves upper and lower walls by an increment.
"""
self.theLSM.moveWallBy("lowerWall",Vec3(0.0,0.00005,0.0))
self.theLSM.moveWallBy("upperWall",Vec3(0.0,-0.00005,0.0))
def runSimulation():
"""
Initialises elastic block model and runs the compression simulation.
"""
#setVerbosity(True)
mySim=LsmMpi(1,[0,0,0])
mySim.initVerletModel("RotSphere", 2.5, 0.5)
mySim.setTimeStepSize(0.01)
mySim.setSpatialDomain(BoundingBox(Vec3(-5.0,-5.0,-5.0),Vec3(15.0,25.0,15.0)))
mySim.readGeometry(
InstallInfo.getDataFilePath("bench_block_10x20x10_r0.15.geo")
);
# setup interactions
bip=RotBondPrms(0,"bonded",0.5,0.15,0.04,0.017,0.0025,0.0125,0.00125,0.00125)
fip=RotFrictionPrms( "friction", 1.0, 0.6, 0.6, 1.0)
dip=DampingPrms("Damping","damping1",0.01,50)
rdip=DampingPrms("RotDamping","damping2",0.01,50)
mySim.createInteractionGroup(bip)
mySim.createInteractionGroup(fip)
mySim.createExclusion("bonded","friction")
mySim.createInteractionGroup(dip)
mySim.createInteractionGroup(rdip)
# create walls
mySim.createWall("lowerWall",Vec3(0.0,0.0,0.0),Vec3(0.0,1.0,0.0))
mySim.createWall("upperWall",Vec3(0.0,20.0,0.0),Vec3(0.0,-1.0,0.0))
wp1=NRotElasticWallPrms("upperWallInteraction","upperWall",1.0)
wp2=NRotElasticWallPrms("lowerWallInteraction","lowerWall",1.0);
mySim.createInteractionGroup(wp1)
mySim.createInteractionGroup(wp2)
# setup savers
nb_prm=InteractionScalarFieldSaverPrms("bonded","count","nbonds","SUM",0,12000,4)
mySim.createFieldSaver(nb_prm)
mySim.createFieldSaver(
WallVectorFieldSaverPrms(
fileName="wf.dat",
fieldName="Force",
wallName=["lowerWall","upperWall"],
fileFormat="RAW_SERIES",
beginTimeStep=0,
endTimeStep=12000,
timeStepIncr=4
)
)
# add loading function
lf=Loading(mySim)
mySim.addPreTimeStepRunnable(lf)
mySim.setNumTimeSteps(12000)
start_time=time()
mySim.run()
stop_time=time()
print "runtime: ", stop_time-start_time, " seconds"
if (__name__ == "__main__"):
runSimulation()
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