144 lines
5.3 KiB
Python
144 lines
5.3 KiB
Python
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# GrainGen V2.0
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# This script generates idealised and representative meshed micro-structure geometries
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# in 2-D and 3-D through the Abaqus geometry kernel. - J. Grogan, 09/06/2011
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#
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# Import Neccesary Abaqus Modules
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from abaqusConstants import *
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from abaqus import *
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import random
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import subprocess
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import regionToolset
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import mesh
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import step
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import part
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import interaction
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import sys
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import GeomModules
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# Create CAE File and Set Up Model
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VerFile=Mdb(pathName="MStructure")
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ModelParams=open('pythonoptions.dat','r')
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VerModel=VerFile.models['Model-1']
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VerAssembly=VerModel.rootAssembly
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# Read Model Params from File
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shape=int(ModelParams.readline())
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part_type=int(ModelParams.readline())
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dimension=int(ModelParams.readline())
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rad=float(ModelParams.readline())
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meshsize=float(ModelParams.readline())
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num_high=int(ModelParams.readline())
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num_wide=int(ModelParams.readline())
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num_thick=int(ModelParams.readline())
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num_grains=num_high*num_wide*num_thick
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num_grains=int(ModelParams.readline())
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scalex=float(ModelParams.readline())
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scaley=float(ModelParams.readline())
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ana_type=int(ModelParams.readline())
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hard_rad=float(ModelParams.readline())
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# For 2-D Solids thickness is set equal to one element
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if dimension==3:
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extrude_depth=rad
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else:
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extrude_depth=meshsize
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num_thick=1
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# Square Grains
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if shape==1:
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GeomModules.DrawSquare(VerModel,part_type,rad,extrude_depth)
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# Hexagonal Grains
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if shape==2:
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GeomModules.DrawHexagon(VerModel,part_type,rad,extrude_depth)
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# Dodecahedral Grains
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if shape==3:
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GeomModules.DrawDodec(VerModel,part_type,rad,extrude_depth)
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# Voronoi Tessellation
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if shape==4:
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if dimension==2:
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GeomModules.Voronoi2D(VerModel,part_type,rad,extrude_depth,num_grains,scalex,scaley,hard_rad)
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else:
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GeomModules.Voronoi3D(VerModel,part_type,rad,extrude_depth,num_grains,hard_rad)
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scalex=scalex/1.
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scaley=scaley/2.
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# Make Boolean Template
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if shape>1:
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GeomModules.BooleanPart(VerModel,part_type,rad,extrude_depth,num_high,
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num_wide,num_thick,shape,dimension,scalex,scaley)
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BoolPart=VerModel.parts['Template']
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# Instance base part - offset instances as required
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if shape<=3:
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VerPart=VerModel.parts['Base']
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GeomModules.PatternParts(num_high,num_wide,num_thick,VerPart,rad,shape,VerModel)
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OldPart=VerModel.parts['Merged']
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if shape==1:
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VerPart=VerModel.parts['Merged']
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del VerAssembly.instances['Merged-1']
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else:
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VerAssembly.InstanceFromBooleanCut(name='FinalPart',
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instanceToBeCut=VerAssembly.instances['Merged-1'],
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cuttingInstances=(VerAssembly.instances['Template-1'], ),
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originalInstances=DELETE)
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del VerAssembly.instances['FinalPart-1']
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VerPart=VerModel.parts['FinalPart']
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# Mesh Part
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if meshsize>0.:
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if shape<3:
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VerPart.setMeshControls(regions=VerPart.cells, elemShape=HEX, technique=STRUCTURED)
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if shape==3:
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VerPart.setMeshControls(regions=VerPart.cells, elemShape=TET, technique=FREE)
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if shape==4:
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if dimension==2:
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VerPart.setMeshControls(regions=VerPart.cells, elemShape=HEX, technique=SWEEP,
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algorithm=ADVANCING_FRONT)
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else:
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VerPart.setMeshControls(regions=VerPart.cells, elemShape=TET, technique=FREE)
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VerPart.seedPart(size=meshsize)
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VerPart.generateMesh()
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# For Corrosion Analysis Output Part Vertices and Element Connectivity
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if ana_type==2:
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GeomModules.VertsConn(OldPart,VerPart,dimension,shape,rad,extrude_depth)
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ecor=open('ecor.dat','w')
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for eachface in VerPart.faces:
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if len(eachface.getAdjacentFaces())<7.:
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xnor=eachface.getNormal()[0]
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ynor=eachface.getNormal()[1]
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znor=eachface.getNormal()[2]
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if (xnor==0.)and(znor==0.):
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# if (ynor==1.)or(ynor==-1.):
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if (ynor==1.):
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for eachelement in eachface.getElements():
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ecor.write("%i\n"%(eachelement.label))
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ecor.close()
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# Generate Materials and Sections
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MatName='Grain'
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CorRate=0.05
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GeomModules.MatGen(MatName,CorRate,ana_type,VerPart,VerModel,part_type,meshsize)
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MatName='Boundary'
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CorRate=0.5
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GeomModules.MatGen(MatName,CorRate,ana_type,VerPart,VerModel,part_type,meshsize)
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else:
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GeomModules.MatGen('',0.,ana_type,VerPart,VerModel,part_type,meshsize)
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#STEPS
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VerModel.ExplicitDynamicsStep(name='Corrode', previous='Initial',
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massScaling=((SEMI_AUTOMATIC, MODEL, AT_BEGINNING, 0.0, 1e-06,
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BELOW_MIN, 0, 0, 0.0, 0.0, 0, None), ))
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VerModel.ExplicitDynamicsStep(name='Load', previous='Corrode',
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timePeriod=1.)
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VerModel.steps['Corrode'].Restart(numberIntervals=2,overlay=OFF,timeMarks=OFF)
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VerModel.steps['Load'].Restart(numberIntervals=2,overlay=OFF, timeMarks=OFF)
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#Loads and BCs
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VerAssembly.Instance(name='CorPart',part=VerPart, dependent=ON)
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iNodes=VerAssembly.instances['CorPart'].nodes
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GeomModules.S1BCs(iNodes,VerModel,num_high,num_wide,num_thick,shape,
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dimension,extrude_depth,rad,scalex,scaley)
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#Create and Submit Job
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VerModel.FieldOutputRequest(name='F-Output-1',
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createStepName='Corrode', variables=(
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'A', 'CSTRESS', 'LE', 'PE', 'PEEQ', 'RF', 'S', 'SDV', 'STATUS', 'U',
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'V'), numIntervals=100)
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VerFile.Job(name='GeomGenTemp', model='Model-1', description='', type=ANALYSIS,
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atTime=None, waitMinutes=0, waitHours=0, queue=None,
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explicitPrecision=SINGLE, nodalOutputPrecision=SINGLE, echoPrint=OFF,
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modelPrint=OFF, contactPrint=OFF, historyPrint=OFF, userSubroutine='',
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scratch='', parallelizationMethodExplicit=DOMAIN, numDomains=4,
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activateLoadBalancing=False, multiprocessingMode=DEFAULT, numCpus=4)
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#OptFile.jobs['StentOpt1'].submit(consistencyChecking=OFF)
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VerFile.jobs['GeomGenTemp'].writeInput(consistencyChecking=OFF)
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