def createAnalysis(param):
from abaqus import *
backwardCompatibility.setValues(reportDeprecated=False)
from abaqusConstants import *
from caeModules import *
import mesh
Im2MeshToolbox = r"D:\myWork\procedures\2DImage2Mesh_VC"
import sys
sys.path.append(Im2MeshToolbox)
from sipShell2Abq import shellTo2DGeo
## IMPORT FILE FROM SCANIP MODEL
myModel = mdb.ModelFromInputFile(inputFileName=param['sipInpFile'],
name=param['modelName'])
shellTo2DGeo(myModel)
deleteDefaultModel()
## SHORTCUTS
myAssembly = myModel.rootAssembly
allMats = myModel.materials
## STEP CREATION
myModel.StaticStep(initialInc=0.01,
timePeriod=param['timePeriod'],
maxInc=.1,
minInc=1e-9,
name='displ',
nlgeom=ON,
previous='Initial')
directions = list()
matNames = list()
slMaCouples = list()
for i, myPart in enumerate(myModel.parts.values()):
myPSet = myPart.sets
part = myPart.name.split('_')[0]
if part == 'INPLANE6':
del myModel.parts['INPLANE6_Geo']
del myAssembly.features['INPLANE6_instance']
continue
## MATERIALS
cSys = myPart.DatumCsysByThreePoints(coordSysType=CARTESIAN,
origin=(0., 0., 0.),
point1=(1., 0., 0.),
point2=(0., 1., 0.))
mat = 'SM_' + part
if allMats.has_key(mat):
myMat = myModel.materials[mat]
else:
print 'material %s unknown!!!' % mat
continue
E = 0.06 #equivalent GM only as we are perp to fibers!!
nu = 0.499
matParam = (E / (4 * (1. + nu)), 6 * (1 - 2. * nu) / E)
if matParam[1] == 0.: # incompressible
myMat.Hyperelastic(testData=OFF,
table=(matParam, ),
materialType=ISOTROPIC,
type=NEO_HOOKE,
behaviorType=INCOMPRESSIBLE)
else:
myMat.Hyperelastic(testData=OFF,
table=(matParam, ),
materialType=ISOTROPIC,
type=NEO_HOOKE,
behaviorType=COMPRESSIBLE)
## SECTION
myModel.HomogeneousSolidSection(name='Section_%s' % part,
material=mat,
thickness=None)
myPart.SectionAssignment(region=(myPart.faces[0], ),
sectionName='Section_%s' % part)
## BC'S
myISet = myAssembly.instances['%s_instance' % part].sets
dMin = 'NS_%s_WITH_XMIN' % part
dMax = 'NS_%s_WITH_XMAX' % part
if myISet.has_key(dMin):
myModel.PinnedBC(createStepName='displ',
localCsys=None,
name='fix_%d' % (i),
region=myISet[dMin])
if part == 'INPLANE5':
x1 = (1.10898, 1.29364)
x2 = (1.29274, 0.74189)
d1 = (0.134, -0.12)
d2 = (0.18, -0.10)
for node in myISet['SF_INPLANE5_WITH_SECTIONNED6'].nodes:
i += 1
applyInterpolatedDisplacement(myModel, node, x1, x2, d1, d2,
'mov_%d' % (i))
## Get Master/Slave couples
oParts = list(myModel.parts.keys())
oParts.remove(myPart.name)
for setName in myPSet.keys():
if setName.startswith('SF_%s_WITH_' % part):
for oPart in oParts:
oPartName = oPart.split('_')[0]
if oPartName == 'INPLANE6':
continue
elif oPartName in setName:
if [oPartName, part] not in slMaCouples:
slMaCouples.append([part, oPartName])
## CONSTRAINTS - same for all interfaces!!
for nbInteraction, slMaCouple in enumerate(slMaCouples):
masterName = 'SF_%s_WITH_%s' % (slMaCouple[1], slMaCouple[0])
slaveName = 'SF_%s_WITH_%s' % (slMaCouple[0], slMaCouple[1])
myMaInstance = myAssembly.instances['%s_instance' % slMaCouple[1]]
mySlInstance = myAssembly.instances['%s_instance' % slMaCouple[0]]
from interactions import Interactions
inter = Interactions(myModel)
inter.setName('interaction_%i' % nbInteraction)
if param['interfaceType'] == 'Tie':
inter.setMasterSlave(myMaInstance.sets[masterName],
mySlInstance.sets[slaveName])
inter.setInteractionToTie()
else:
inter.setMasterSlave(myMaInstance.surfaces[masterName],
mySlInstance.surfaces[slaveName])
inter.setNormalStiffness(param['normalStiffness'])
if param['interfaceType'] == 'Friction':
inter.setFrictionBehaviour('Friction')
elif param['interfaceType'] == 'Rough':
inter.setFrictionBehaviour('Rough')
elif param['interfaceType'] == 'Cohesive':
inter.setCohesiveBehaviour(
useDefaultBehaviour=False,
penalties=param['cohesivePenalties'])
elif param['interfaceType'] == 'CohesiveRough':
inter.setCohesiveBehaviour(
useDefaultBehaviour=False,
penalties=param['cohesivePenalties'])
inter.setFrictionBehaviour('Rough')
elif param['interfaceType'] == 'CohesiveFriction':
inter.setCohesiveBehaviour()
inter.setFrictionBehaviour('Friction')
inter.createInteraction()
## JOB
myJob = mdb.Job(model=param['modelName'], name=param['modelName'])
myJob.writeInput(consistencyChecking=OFF)
if param['numCpus'] > 1:
myJob.setValues(numCpus=param['numCpus'],
numDomains=param['numCpus'],
multiprocessingMode=DEFAULT)
return myJob, mdb
def caeAnalysis(p):
# check parameter consistency
assert not (p['withNucleus'] and p['internalPressure']), "do not set internal pressure if nucleus is modelled"
# MODEL
myModel = mdb.Model(p['modelName'])
abaqusTools.deleteDefaultModel()
myAssembly = myModel.rootAssembly
#check if creating annulusCut and NucleusCut makes sense (ie check if there is indeed a cut to make with the dimensions given)
cutAnnulus = False
cutNucleus = False
if p['punchCut']:
D = getDistanceBetweenCentres((0,0,0),p['punchCentre'])
if D<p['punchRadius']+p['innerRadius']:
cutNucleus = True
if D>p['punchRadius']-p['innerRadius']:
cutAnnulus = True
if (cutAnnulus or cutNucleus):
punch = genericIVDCreation.CylNucleus(myModel)
punch.setCentre(p['punchCentre'])
punch.setRadius(p['punchRadius'])
punch.setHeight(p['height'])
punch.setName('punch')
#punchInstance,punchPart = punch.create()
annulus = genericIVDCreation.CylAnnulus(myModel)
annulus.setInnerRadius(p['innerRadius'])
annulus.setOuterRadius(p['outerRadius'])
annulus.setHeight(p['height'])
annulus.setNbLamellae(p['nbLamellae'])
annulus.setNbCuts(p['nbCut'])
if p['matType'] != 'Holzapfel':
annulus.setToIncompressible()#will use hybrid elements for almost incompressible material - check if can be used for Holzapfel
if cutAnnulus:
annulus.cutWithPunch(punch)
annulusParts,cutAnnulusPart = annulus.create()
matNames = list()
directions = list()
for cyl in range(p['nbLamellae']):
thisPart = annulusParts[cyl]
for arc in range(p['nbCut'][cyl]):
sectionName = 'annulus%i_section%i'%(cyl,arc)
domainNb = int(sum(p['nbCut'][0:cyl]))+arc
if cutAnnulusPart[cyl][arc]:# if the lamella is completely severed then two points are needed to define the cells
lamellarThickness = (p['outerRadius']-p['innerRadius'])/p['nbLamellae']
r0 = p['innerRadius']+(p['outerRadius']-p['innerRadius'])/p['nbLamellae']*cyl
alpha = 360./p['nbCut'][cyl]*(arc+1-0.01)*math.pi/180.
middlePt = ((r0*math.cos(alpha),p['height']/2.,r0*math.sin(alpha)),)
pickedCells2 = (thisPart.cells.findAt(middlePt),thisPart.cells.findAt((annulus.midPoint[domainNb],)))
else: pickedCells2 = thisPart.cells.findAt((annulus.midPoint[domainNb],))
# create material
matName = 'annulus%i'%domainNb
if isinstance(p['holzapfelParameters'],list) and len(p['holzapfelParameters']) == int(sum(p['nbCut'])):#there is one set of parameters per cut
matParam = p['holzapfelParameters'][domainNb]
elif len(p['holzapfelParameters']) == 5:
matParam = p['holzapfelParameters']
else: raise("parameter 'holzapfelParameters' of unknown type or wrong length")
if p['matType'] == 'Holzapfel':
if isinstance(p['fiberDirection'],list) and len(p['fiberDirection']) == int(sum(p['nbCut'])):
fibreAngle = p['fiberDirection'][domainNb]
elif isinstance(p['fiberDirection'],float) and p['nbLamellae']<2:
fibreAngle = p['fiberDirection']
else: raise Exception("parameter 'fiberDirection' of unknown type or wrong length")
matNames.append(matName)
directions.append((0.,math.cos(fibreAngle),math.sin(fibreAngle)))
material = genericIVDCreation.annulusMaterial(matName,p['matType'],myModel)
material.setMatParam(matParam)
if p['nbLamellae']<2:material.setToTwoDirections()
material.define()
# coordinate system
csysCyl = thisPart.DatumCsysByThreePoints(coordSysType=CYLINDRICAL,origin=(0.,0.,0.),point1=(1.,0.,0.),point2=(0.,0.,-1.))
# assign material
#abaqusTools.assignMaterialToPart(matName,thisPart,myModel,orientation=csysCyl)
abaqusTools.assignMaterialToPartition(matName,thisPart,sectionName,pickedCells2,myModel,orientation=csysCyl)
if p['withNucleus']:
#geometry and mesh
nucleus = genericIVDCreation.CylNucleus(myModel,annulus.bottomFaces,annulus.topFaces)
nucleus.setRadius(p['innerRadius'])
nucleus.setHeight(p['height'])
if cutNucleus:
nucleus.cutWithPunch(punch)
nucleusInstance,nucleusPart = nucleus.create()
# material - compressive modulus H~2G (Neo-Hookean model of sig = H/2(lambda-1/lambda)) and C10=G/2 ==> C10 = H/4
myMat = myModel.Material(name='nucleus')
myMat.Hyperelastic(testData=OFF,table=((p['compressiveModulus']/4.,0.0),),materialType=ISOTROPIC,type=NEO_HOOKE,behaviorType=INCOMPRESSIBLE)
abaqusTools.assignMaterialToPart('nucleus',nucleusPart,myModel)
#nucleus/annulus connection (rough contact)
innerAnnulus = tuple(annulus.innerFaces[i] for i in range(p['nbCut'][0]))
outerNucleus = nucleusInstance.faces.findAt((nucleus.outerPoint,))
masterSurface = myAssembly.Surface(name='innerAnnulus',side1Faces=innerAnnulus)
slaveSurface = myAssembly.Surface(name='outerNucleus',side1Faces=outerNucleus)
from interactions import Interactions
inter = Interactions(myModel)
inter.setMasterSlave(masterSurface,slaveSurface)
inter.setName('annulusNucleusInterface')
inter.setFrictionBehaviour('Rough')
inter.setNormalStiffness(1e8)
inter.createInteraction()
topFace = nucleus.topFaces
bottomFace = nucleus.bottomFaces
else:
topFace = annulus.topFaces
bottomFace = annulus.bottomFaces
## SETS FOR OUTPUT ANALYSIS
myAssembly.Set(faces=tuple(topFace), name='topFaces')
myAssembly.Set(faces=tuple(bottomFace), name='bottomFaces')
if p['nbLamellae']>1:
##CONSTRAINTS - same for all interfaces!!
for nb in range(1,p['nbLamellae']):
domainNb = int(sum(p['nbCut'][0:nb]))
outerFaces = tuple(annulus.outerFaces[domainNb-i-1] for i in range(p['nbCut'][nb-1]))
if any(cutAnnulusPart[cyl]):outerFaces2 = tuple(annulus.outerFaces2[domainNb-i-1] for i in range(p['nbCut'][nb-1]))
innerFaces = tuple(annulus.innerFaces[domainNb+i] for i in range(p['nbCut'][nb]))
if any(cutAnnulusPart[cyl]):masterSurface = myAssembly.Surface(name='master%d'%(nb),side1Faces=(outerFaces,outerFaces2))
else:masterSurface = myAssembly.Surface(name='master%d'%(nb),side1Faces=outerFaces)
slaveSurface = myAssembly.Surface(name='slave%d'%(nb),side1Faces=innerFaces)
from interactions import Interactions
inter = Interactions(myModel)
inter.setMasterSlave(masterSurface,slaveSurface)
inter.setName('interface%d'%(nb))
if p['interfaceType'] == 'Tie':
inter.setInteractionToTie()
elif p['interfaceType'] == 'Friction':
inter.setFrictionBehaviour('Friction')
elif p['interfaceType'] == 'Cohesive':
inter.setCohesiveBehaviour()
elif p['interfaceType'] == 'CohesiveFriction':
inter.setCohesiveBehaviour()
inter.setFrictionBehaviour('Friction')
inter.createInteraction()
##STEP
myModel.StaticStep(name='Load',previous='Initial',timePeriod=p['timePeriod'],initialInc=p['initialInc'],nlgeom=ON,
maxInc=p['maxInc'],minInc=p['minInc'],maxNumInc=10000)
myModel.steps['Load'].control.setValues(allowPropagation=OFF, resetDefaultValues=OFF, discontinuous=ON, timeIncrementation=(8, 10, 9., 16., 10.0, 4., 12., 10.0, 5., 3., 50.0))
#I0=8(nb equ ite - cannot change if discontinuous ON),Ir=10 (nb conseq equ ite - cannot change if discontinuous ON),Ip=9,Ic=16,Il=10,Ig=4,Is=12,Ia=5,Ij=5,It=3,Isc=50
myModel.steps['Load'].solverControl.setValues(allowPropagation=OFF, resetDefaultValues=OFF, maxIterations=10)
##LOAD/BC - after step as the step names are used!!!
myTopSurface = myAssembly.Surface(name='topSurface',side1Faces=topFace)
cylSys = myAssembly.DatumCsysByThreePoints(name='cylC',coordSysType=CYLINDRICAL, origin=(0,0,0),\
point1=(1.0, 0.0, 0), point2=(0.0, 0.0, -1.0) )
datumCyl = myAssembly.datums[cylSys.id]
if p['load'] =='Pressure':#default !! magnitude provided = PRESSURE
myModel.Pressure(name='Pressure',createStepName='Load',region=myTopSurface,magnitude=p['loadMagnitude'],
distributionType=UNIFORM)
myModel.PinnedBC(name='Fixed',createStepName='Load',region=tuple(bottomFace))
elif p['load'] == 'Pressure_total': #!!magnitude provided = total INITIAL FORCE, when the area varies -> force = magnitude*area1/area0!!
myModel.Pressure(name='Pressure',createStepName='Load',region=myTopSurface,magnitude=p['loadMagnitude'],
distributionType=TOTAL_FORCE)
myModel.PinnedBC(name='Fixed',createStepName='Load',region=tuple(bottomFace))
elif p['load'] == 'vertDispl':
myModel.DisplacementBC(name='Displ',createStepName='Load',region=tuple(topFace),u1=0.,u2=0.,u3=-p['displ'], localCsys=datumCyl)
myModel.PinnedBC(name='Fixed',createStepName='Load',region=tuple(bottomFace))
elif p['load'] == 'PressurePlane':# magnitude provided = concentrated FORCE on the rigid plane
import regionToolset
p['outerRadius'] = p['outerRadius']
surf = myModel.ConstrainedSketch(name='surf', sheetSize=200.0)
surf.Line(point1=(0.0, p['outerRadius']), point2=(0.0, -p['outerRadius']))
surfPart = myModel.Part(name='crushingPart', dimensionality=THREE_D, type=ANALYTIC_RIGID_SURFACE)
surfPart.AnalyticRigidSurfExtrude(sketch=surf, depth=2.*p['outerRadius'])
surfPart.ReferencePoint(point=(0.0, 0.0, 0.0))
crushPlane = myAssembly.Instance(name='crushingPlane', part=surfPart, dependent=ON)
f1 = myAssembly.instances['crushingPlane'].faces[0]
f2 = myAssembly.instances['cylinder0_instance'].faces[1]
myAssembly.ParallelFace(movablePlane=f1, fixedPlane=f2, flip=ON)
myAssembly.translate(instanceList=('crushingPlane', ), vector=(0.0, p['height'], 0.0))
side1Faces1 = crushPlane.faces.getSequenceFromMask(mask=('[#1 ]', ), )
myCrushingSurface = myAssembly.Surface(side1Faces=side1Faces1, name='crushingSurface')
myModel.Tie(name='tieTop', master=myCrushingSurface, slave=myTopSurface)
region = regionToolset.Region(referencePoints=(crushPlane.referencePoints[2], ))
myModel.ConcentratedForce(name='Load-1', createStepName='Load', region=region, cf2=-p['loadMagnitude'], distributionType=UNIFORM,
follower=ON)
myModel.DisplacementBC(name='BC-2', createStepName='Load', region=region, u1=0.0, u3=0.0, ur1=0.0, ur2=0.0, ur3=0.0,
distributionType=UNIFORM)
myModel.DisplacementBC(name='noRadialDispl',createStepName='Load',region=tuple(topFace),u1=0.,u2=0.,localCsys=datumCyl)
myModel.PinnedBC(name='Fixed',createStepName='Load',region=tuple(bottomFace))
else:#load only in internal pressure
if p['internalPressure']:
myModel.XsymmBC(name='FixedTop',createStepName='Load',region=tuple(topFace),localCsys=datumCyl)
myModel.XsymmBC(name='Fixed',createStepName='Load',region=tuple(bottomFace),localCsys=datumCyl)
else: raise Exception("no BC's have been defined!!")
if p['internalPressure']:
myInnerSurface = myAssembly.Surface(name='innerSurface',side1Faces=tuple(annulus.innerFaces[i] for i in range(p['nbCut'][0])))
myModel.Pressure(name='intPressure',createStepName='Load',region=myInnerSurface,magnitude=p['internalPressure'],
distributionType=UNIFORM)
## OUTPUT REQUESTS
#fieldVariable = ('S', 'LE', 'U', 'RT', 'P', 'CSTRESS', 'CDISP', 'CFORCE')
#myModel.fieldOutputRequests['F-Output-1'].setValues(variables=fieldVariable)
## JOB
from jobCreation import JobDefinition
myJobDef = JobDefinition(p['modelName'])
myJobDef.setScratchDir(p['scratchDir'])
if p['matType'] == 'Holzapfel':
myJobDef.setToFibrous()
myJobDef.fibreDirections(directions)
myJobDef.setFibreInputType('partition')
myJobDef.setMatNames(matNames)
if p['nbLamellae']<2:myJobDef.setPartitionTwoDirections()
myNewJob = myJobDef.create()
if p['numCpus']>1:
myNewJob.setValues(numCpus=p['numCpus'],numDomains=p['numCpus'],multiprocessingMode=THREADS)
myNewJob.setValues(memory=3, memoryUnits=GIGA_BYTES)
mdb.saveAs(myNewJob.name)
#-------------------------------------------------------
return myNewJob,mdb