gsi_plasticlug_caemodel.py
#
# Getting Started with ABAQUS
#
# Script for plastic lug example
#
from abaqus import *
from abaqusConstants import *
session.viewports['Viewport: 1'].makeCurrent()
session.viewports['Viewport: 1'].maximize()
session.journalOptions.setValues(replayGeometry=COORDINATE,
recoverGeometry=COORDINATE)
from caeModules import *
from driverUtils import executeOnCaeStartup
executeOnCaeStartup()
Mdb()
session.viewports['Viewport: 1'].setValues(displayedObject=None)
## Sketch profile of the lug
s = mdb.models['Model-1'].ConstrainedSketch(name='__profile__', sheetSize=0.25)
g, v, d, c = s.geometry, s.vertices, s.dimensions, s.constraints
s.sketchOptions.setValues(decimalPlaces=3)
s.setPrimaryObject(option=STANDALONE)
mdb.models['Model-1'].sketches['__profile__'].sketchOptions.setValues(
gridFrequency=2)
## Sketch rectangle; delete right edge
s.rectangle(point1=(-0.02, 0.02), point2=(0.02, -0.01))
s.delete(objectList=(g.findAt((0.02, 0.005)), ))
## Constraint and dimensions
s.EqualLengthConstraint(entity1=g.findAt((0.0, -0.01)),
entity2=g.findAt((0.0, 0.02)))
s.ObliqueDimension(vertex1=v.findAt((-0.02, 0.02)),
vertex2=v.findAt((-0.02, -0.01)),
textPoint=(-0.0295071750879288, -0.000801935500930995),
value=0.05)
s.ObliqueDimension(vertex1=v.findAt((0.02, 0.04)),
vertex2=v.findAt((-0.02, 0.04)),
textPoint=(-0.000981846125796437, 0.0510564744472504), value=0.1)
## Close profile with semicircular arc
s.ArcByCenterEnds(center=(0.0689500589329149, 0.015), point1=(0.08, 0.04),
point2=(0.08, -0.01), direction=CLOCKWISE)
## Constraints and dimension
s.TangentConstraint(entity1=g.findAt((0.096283, 0.015)),
entity2=g.findAt((0.03, 0.04)))
s.TangentConstraint(entity1=g.findAt((0.105, 0.015)),
entity2=g.findAt((0.03, -0.01)))
s.RadialDimension(curve=g.findAt((0.105, 0.015)),
textPoint=(0.104353070259094, -0.0138576403260231), radius=0.025)
d[2].setValues(reference=ON)
## Sketch circular hole
s.CircleByCenterPerimeter(center=(0.08, 0.015),
point1=(0.09446020424366, 0.0123283043503761))
## Dimension
s.RadialDimension(curve=g.findAt((0.06554, 0.017672)),
textPoint=(0.0518245659768581, 0.027848444879055), radius=0.015)
s.VerticalDimension(vertex1=v.findAt((0.08, 0.015)),
vertex2=v.findAt((0.09475, 0.012275)),
textPoint=(0.115778021514416, 0.0141020342707634), value=0.0)
p = mdb.models['Model-1'].Part(name='Lug', dimensionality=THREE_D,
type=DEFORMABLE_BODY)
p = mdb.models['Model-1'].parts['Lug']
p.BaseSolidExtrude(sketch=s, depth=0.02)
s.unsetPrimaryObject()
session.viewports['Viewport: 1'].setValues(displayedObject=p)
del mdb.models['Model-1'].sketches['__profile__']
##
## Create material 'Steel'
##
mdb.models['Model-1'].Material('Steel')
mdb.models['Model-1'].materials['Steel'].Elastic(table=((200.0E9, 0.3), ))
mdb.models['Model-1'].materials['Steel'].Plastic(table=((380.0E6, 0.0), (
580.0E6, 0.35)))
##
## Create solid section
##
mdb.models['Model-1'].HomogeneousSolidSection(name='LugSection',
material='Steel', thickness=1.0)
##
## Assign solid section
##
c = p.cells
cells = c
region = regionToolset.Region(cells=cells)
p.SectionAssignment(region=region, sectionName='LugSection', offset=0.0)
##
## Set coordinate system (done by default)
##
a = mdb.models['Model-1'].rootAssembly
a.DatumCsysByDefault(CARTESIAN)
##
## Instance the lug
##
a.Instance(name='Lug-1', part=p, dependent=ON)
##
## Create a static general step
##
mdb.models['Model-1'].StaticStep(name='LugLoad',
previous='Initial', description='Apply uniform pressure to the hole',
initialInc=0.2)
session.viewports['Viewport: 1'].assemblyDisplay.setValues(step='LugLoad')
##
## Apply encastre bc to left end
##
f = a.instances['Lug-1'].faces
faces = f.findAt(((-0.02, 0.006667, 0.013333), ))
region = regionToolset.Region(faces=faces)
mdb.models['Model-1'].EncastreBC(name='Fix left end',
createStepName='LugLoad', region=region)
session.viewports['Viewport: 1'].setValues(displayedObject=a)
session.viewports['Viewport: 1'].view.fitView()
session.viewports['Viewport: 1'].view.setValues(session.views['Iso'])
##
## Partition the lug
##
c = p.cells
e = p.edges
v = p.vertices
d = p.datums
pickedCells = c.findAt(((-0.02, 0.006667, 0.013333), ))
p.PartitionCellByPlaneThreePoints(point1=v.findAt(coordinates=(0.095, 0.015,
0.02)), cells=pickedCells, point2=p.InterestingPoint(edge=e.findAt(
coordinates=(0.08, 0.03, 0.02)), rule=MIDDLE), point3=p.InterestingPoint(
edge=e.findAt(coordinates=(0.08, 0.03, 0.0)), rule=MIDDLE))
##
## Apply pressure load to bottom of hole
##
a.regenerate()
s = a.instances['Lug-1'].faces
side1Faces = s.findAt(((0.094968, 0.01402, 0.013333), ))
region = regionToolset.Region(side1Faces=side1Faces)
mdb.models['Model-1'].Pressure(name='Pressure load',
createStepName='LugLoad', region=region, magnitude=1.0E8)
##
## Create partitions
##
pickedCells = c.findAt(((-0.02, 0.006667, 0.006667), ), ((-0.02, 0.023333,
0.013333), ))
p.PartitionCellByPlaneThreePoints(cells=pickedCells, point1=p.InterestingPoint(
edge=e.findAt(coordinates=(0.069393, 0.004393, 0.0)), rule=MIDDLE),
point2=p.InterestingPoint(edge=e.findAt(coordinates=(0.069393, 0.004393,
0.02)), rule=MIDDLE), point3=p.InterestingPoint(edge=e.findAt(
coordinates=(0.090607, 0.025607, 0.02)), rule=MIDDLE))
p.DatumPointByEdgeParam(edge=e.findAt(coordinates=(0.055, -0.01, 0.02)),
parameter=0.25)
pickedCells = c.findAt(((-0.02, 0.006667, 0.006667), ), ((-0.02, 0.023333,
0.013333), ))
p.PartitionCellByPlanePointNormal(point=d[5], normal=e.findAt(coordinates=(
0.055, -0.01, 0.02)), cells=pickedCells)
f = a.instances['Lug-1'].faces
faces = f.findAt(((-0.02, 0.006667, 0.006667), ), ((-0.02, 0.023333,
0.013333), ))
a.Set(faces=faces, name='BuiltIn')
e = a.instances['Lug-1'].edges
edges = e.findAt(((0.08, 0.0, 0.015), ))
a.Set(edges=edges, name='HoleBot')
##
## Assign global seed
##
p.seedPart(size=0.007)
##
## Assign element type
##
elemType1 = mesh.ElemType(elemCode=C3D20R)
elemType2 = mesh.ElemType(elemCode=C3D15)
elemType3 = mesh.ElemType(elemCode=C3D10M)
cells = c
pickedRegions =(cells, )
p.setElementType(regions=pickedRegions, elemTypes=(elemType1, elemType2,
elemType3))
##
## Generate the mesh
##
p.generateMesh()
session.viewports['Viewport: 1'].view.setValues(session.views['Iso'])
session.viewports['Viewport: 1'].assemblyDisplay.geometryOptions.setValues(
datumPoints=OFF)
mdb.models['Model-1'].fieldOutputRequests['F-Output-1'].setValues(
variables=PRESELECT)
del mdb.models['Model-1'].historyOutputRequests['H-Output-1']
a.regenerate()
mdb.Job(name='PlasticLugHard', model='Model-1',
description='Elastic-Plastic Steel Connecting Lug')
a.regenerate()
session.viewports['Viewport: 1'].view.fitView()
session.viewports['Viewport: 1'].view.setValues(session.views['Iso'])
#
# Save model database
#
mdb.saveAs('PlasticLug.cae')
