phd-scripts/JMBBM13a/GeometryGenerators/CP_Generator_100.py

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2024-05-13 19:50:21 +00:00
# GrainGen V3.0
# This script generates idealised and representative meshed micro-structure geometries
# in 2-D through the Abaqus geometry kernel. - J. Grogan, 25/09/2011
#
# Import Abaqus and External Modules
from abaqusConstants import *
from abaqus import *
import random
import regionToolset
import mesh
import step
import part
import interaction
import subprocess
#randomSeed=[39928822]
randomSeed=[2388997]
randomSeed.append(39764)
randomSeed.append(19230045)
randomSeed.append(452398)
randomSeed.append(872315)
randomSeed.append(794738)
randomSeed.append(224492579)
randomSeed.append(96502382)
randomSeed.append(4921299)
randomSeed.append(3113145)
randomSeed.append(36677835)
for eachModel in range(0,10):
#
# Create Model Database
VerFile=Mdb(pathName="MStructure")
VerModel=VerFile.models['Model-1']
VerAssembly=VerModel.rootAssembly
#
# Assign Model Parameters
#
# Underlying Geometry
xSize=0.8
ySize=0.1
#
# Microstructure Geometry
charLength=0.0119# Grain Side Length
numX=800
numY=100
# numGrains=528 # Voronoi Only
numGrains=840 # Voronoi Only
hardRad=0.00 # Voronoi Only
#
# Other Parametersvgrain vumat
grainType='Voronoi' # Options: Square, Hexagon, Voronoi
meshSize=0.001
analysis='Tension' # Options: Tension, Bending
#
# Draw Base Part
BasePart=VerModel.Part(name='Base', dimensionality=TWO_D_PLANAR,type=DEFORMABLE_BODY)
BasePart.DatumPointByCoordinate((0,0,0))
BasePart.DatumPointByCoordinate((xSize,0,0))
BasePart.DatumPointByCoordinate((0,ySize,0))
pdatums=BasePart.datums
BasePart.DatumPlaneByThreePoints(point1=pdatums[1], point2=pdatums[2], point3=pdatums[3])
BasePart.DatumAxisByTwoPoint(point1=pdatums[1],point2=pdatums[2])
partTransform = BasePart.MakeSketchTransform(sketchPlane=pdatums[4], sketchUpEdge=pdatums[5],
sketchPlaneSide=SIDE1, sketchOrientation=BOTTOM, origin=(0,0,0))
BaseSketch = VerModel.ConstrainedSketch(name='Base',sheetSize=200, transform=partTransform)
#
BaseSketch.Line(point1=(0.,0.),point2=(xSize,0.))
BaseSketch.Line(point1=(xSize,0.),point2=(xSize,ySize))
BaseSketch.Line(point1=(xSize,ySize),point2=(0.,ySize))
BaseSketch.Line(point1=(0.,ySize),point2=(0.,0.))
BasePart.BaseShell(sketch=BaseSketch)
BasePart=VerModel.parts['Base']
#
# Draw Microstructure and Partition Base Part
ParSketch=VerModel.ConstrainedSketch(name='Base',sheetSize=200, transform=partTransform)
if grainType=='Square':
offset=0.
for i in range(0,numX):
ParSketch.Line(point1=(offset,0.),point2=(offset,numY*charLength))
offset=offset+charLength
offset=0.
for i in range(0,numY):
ParSketch.Line(point1=(0.,offset),point2=(numX*charLength,offset))
offset=offset+charLength
elif grainType=='Hexagon':
yLength=sin(radians(30.))*charLength
xLength=cos(radians(30.))*charLength
offsetX=0.
for i in range(0,numX):
offsetY=0.
for j in range(0,numY):
if j%2==0:
xPos=offsetX
else:
xPos=offsetX+xLength
ParSketch.Line(point1=(xLength+xPos,-yLength+offsetY),point2=(xLength+xPos,yLength+offsetY))
ParSketch.Line(point1=(xLength+xPos,+yLength+offsetY),point2=(xPos,2.*yLength+offsetY))
ParSketch.Line(point1=(xLength+xPos,-yLength+offsetY),point2=(xPos,-2.*yLength+offsetY))
offsetY=offsetY+3.*yLength
offsetX=offsetX+2.*xLength
elif grainType=='Voronoi':
random.seed(randomSeed[eachModel])
qhullin=open('qhullin.dat','w')
qhullin.write("%i \n"%(2))
qhullin.write("%i \n"%(numGrains*9))
xlist=[0.]
ylist=[0.]
#
#Generate Point Seeds - Hardcore Voronoi Method Optional
for i in range(0,numGrains):
outside=False
while outside==False:
xcor=random.random()*xSize
ycor=random.random()*ySize
if hardRad==0.:
outside=True
break
if len(xlist)>1:
distold=1000.
for i in range(1,len(xlist)):
distnew=(xcor-xlist[i])*(xcor-xlist[i])+(ycor-ylist[i])*(ycor-ylist[i])
distnew=sqrt(distnew)
if distnew<distold:
distold=distnew
if distold>=hardRad:
outside=True
else:
outside=True
xlist.append(xcor)
ylist.append(ycor)
qhullin.write("%18.6f %18.6f \n"%(xcor,ycor))
qhullin.write("%18.6f %18.6f \n"%(xcor+xSize,ycor))
qhullin.write("%18.6f %18.6f \n"%(xcor-xSize,ycor))
qhullin.write("%18.6f %18.6f \n"%(xcor,ycor+ySize))
qhullin.write("%18.6f %18.6f \n"%(xcor,ycor-ySize))
qhullin.write("%18.6f %18.6f \n"%(xcor+xSize,ycor+ySize))
qhullin.write("%18.6f %18.6f \n"%(xcor-xSize,ycor-ySize))
qhullin.write("%18.6f %18.6f \n"%(xcor+xSize,ycor-ySize))
qhullin.write("%18.6f %18.6f \n"%(xcor-xSize,ycor+ySize))
qhullin.close()
#
# Generate tesselation externally and post-process results
scales=open('scales.dat','w')
scales.write("%18.6f %18.6f \n"%(xSize,ySize))
scales.close()
retcode=subprocess.call("qhull.exe v Qbb TI qhullin.dat o TO qhullout.dat")
retcode=subprocess.call("Voronoi2DPost.exe")
FortranFile=open('fortranout.dat')
num_cells=int(FortranFile.readline())
cordx=[]
cordy=[]
x1=[]
y1=[]
x2=[]
y2=[]
k=0
#
# Generate Partition Sketch
for i in range(0,num_cells):
num_verts=int(FortranFile.readline())
for j in range(0,num_verts):
coords=FortranFile.readline().split(',')
cordx.append([])
cordy.append([])
cordx[j]=float(coords[0])
cordy[j]=float(coords[1])
for j in range(0,num_verts-1):
ParSketch.Line(point1=(cordx[j],cordy[j]),point2=(cordx[j+1],cordy[j+1]))
x1.append([])
y1.append([])
x1[k]=cordx[j]
y1[k]=cordy[j]
x2.append([])
y2.append([])
x2[k]=cordx[j+1]
y2[k]=cordy[j+1]
k=k+1
ParSketch.Line(point1=(cordx[num_verts-1],cordy[num_verts-1]),
point2=(cordx[0],cordy[0]))
x1.append([])
y1.append([])
x1[k]=cordx[num_verts-1]
y1[k]=cordy[num_verts-1]
x2.append([])
y2.append([])
x2[k]=cordx[0]
y2[k]=cordy[0]
k=k+1
print i
BasePart.PartitionFaceBySketch(faces=BasePart.faces, sketch=ParSketch)
#
# Generate Sections and Section Assignments
labelcount=1
regions=BasePart.faces
for eachregion in regions:
mlabel='Mat'+str(labelcount)
VerModel.PEGSection(name=mlabel, material=mlabel, thickness=0.01,
wedgeAngle1=0.0, wedgeAngle2=0.0)
BasePart.SectionAssignment(region=(eachregion,),
sectionName=mlabel, offset=0.0, offsetField='')
labelcount=labelcount+1
#
# Mesh Part
BasePart.ReferencePoint(point=(0.0, 0.0, 0.0))
if grainType=='Square':
BasePart.setMeshControls(regions=BasePart.faces, elemShape=QUAD, technique=STRUCTURED)
elif grainType=='Hexagon':
offsetX=0.
offsetY=0.
ParSketch2=VerModel.ConstrainedSketch(name='Hex',sheetSize=200, transform=partTransform)
for i in range(0,2*numX):
ParSketch2.Line(point1=(offsetX,0.),point2=(offsetX,2.*charLength*numY))
offsetX=offsetX+xLength
for i in range(0,numY):
ParSketch2.Line(point1=(0.,offsetY),point2=(2.*charLength*numX,offsetY))
offsetY=offsetY+3.*yLength
BasePart.PartitionFaceBySketch(faces=BasePart.faces, sketch=ParSketch2)
BasePart.setMeshControls(regions=BasePart.faces, elemShape=QUAD, technique=SWEEP)
elif grainType=='Voronoi':
BasePart.setMeshControls(regions=BasePart.faces, elemShape=QUAD_DOMINATED, technique=FREE)
BasePart.seedPart(size=meshSize)
pickedRegions =(BasePart.faces, )
elemType1 = mesh.ElemType(elemCode=CPEG8R, elemLibrary=STANDARD)
#elemType1 = mesh.ElemType(elemCode=CPEG4R, elemLibrary=STANDARD,hourglassControl=ENHANCED)
BasePart.setElementType(regions=pickedRegions, elemTypes=(elemType1,))
BasePart.generateMesh()
#
#Steps
VerModel.StaticStep(name='Step-1', previous='Initial',
maxNumInc=100000, initialInc=0.03, minInc=1e-07, maxInc=0.15, nlgeom=ON, timePeriod=20.)
VerModel.fieldOutputRequests['F-Output-1'].setValues(variables=(
'LE', 'RF', 'S', 'U'), timeInterval=0.2, timeMarks=OFF)
#
#Boundary Conditions
VerAssembly.Instance(name='Strut',part=BasePart, dependent=ON)
iNodes=VerAssembly.instances['Strut'].nodes
toler=0.01*meshSize
Left=iNodes.getByBoundingBox(xMin=-toler,xMax=toler,yMin=-toler,yMax=ySize+toler)
BLeft=iNodes.getByBoundingBox(xMin=-toler,xMax=toler,yMin=-toler,yMax=toler)
Right=iNodes.getByBoundingBox(xMin=xSize-toler,xMax=xSize+toler,yMin=toler,yMax=ySize+toler)
BRight=iNodes.getByBoundingBox(xMin=xSize-toler,xMax=xSize+toler,yMin=-toler,yMax=toler)
#
Lregion=regionToolset.Region(nodes=Left)
BLregion=regionToolset.Region(nodes=BLeft)
Rregion=regionToolset.Region(nodes=Right)
BRregion=regionToolset.Region(nodes=BRight)
#
VerModel.SmoothStepAmplitude(name='Amp-1', timeSpan=TOTAL, data=(( 0.0, 0.0), (24.00, 1.0)))
VerModel.DisplacementBC(name='LeftX', createStepName='Initial',
region=Lregion, u1=0.0, u2=UNSET, u3=UNSET, ur1=UNSET, ur2=UNSET,
ur3=UNSET, amplitude=UNSET, fixed=OFF, distributionType=UNIFORM)
VerModel.DisplacementBC(name='BottomY1', createStepName='Initial',
region=BLregion, u1=UNSET, u2=0.0, u3=UNSET, ur1=UNSET, ur2=UNSET,
ur3=UNSET, amplitude=UNSET, fixed=OFF, distributionType=UNIFORM)
if analysis=='Tension':
VerModel.DisplacementBC(name='Tension', createStepName='Step-1',
region=BRregion, u1=0.5*xSize, u2=UNSET, u3=UNSET, ur1=UNSET, ur2=UNSET,
ur3=UNSET, amplitude=UNSET, fixed=OFF, distributionType=UNIFORM)
VerModel.DisplacementBC(name='BottomY2', createStepName='Initial',
region=BRregion, u1=UNSET, u2=0.0, u3=UNSET, ur1=UNSET, ur2=UNSET,
ur3=UNSET, amplitude=UNSET, fixed=OFF, distributionType=UNIFORM)
VerModel.boundaryConditions['Tension'].setValues(amplitude='Amp-1')
else:
VerModel.DisplacementBC(name='Bending', createStepName='Step-1',
region=BRregion, u1=UNSET, u2=UNSET, u3=UNSET, ur1=UNSET, ur2=UNSET,
ur3=-6., amplitude=UNSET, fixed=OFF, distributionType=UNIFORM)
VerModel.boundaryConditions['Bending'].setValues(amplitude='Amp-1')
#
VerAssembly.Set(nodes=Right, name='Right')
VerAssembly.Set(nodes=BRight, name='BRight')
if analysis=='Tension':
VerModel.Equation(name='Constraint-1', terms=((1.0, 'Right', 1), ( -1.0, 'BRight', 1)))
else:
region1=VerAssembly.sets['BRight']
region2=VerAssembly.sets['Right']
VerModel.MultipointConstraint(name='Constraint-2',
controlPoint=region1, surface=region2, mpcType=BEAM_MPC,
userMode=DOF_MODE_MPC, userType=0, csys=None)
#
#Create Job and write input file
if grainType=='Square':
letter1='S'
elif grainType=='Hexagon':
letter1='H'
elif grainType=='Voronoi':
letter1='V'
if analysis=='Tension':
letter2='T'
else:
letter2='B'
label='W'+str(numY)+'L'+str(numX)+letter1+letter2+str(eachModel)
VerFile.Job(name=label, model='Model-1', type=ANALYSIS,userSubroutine='ucrystal.for')
VerFile.jobs[label].writeInput(consistencyChecking=OFF)
# VerFile.close()