Beam Tutorial Abqus

8/10/2019 Beam Tutorial Abqus

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AbaqusBeamTutorial

ProblemDescription

Thetwodimensionalbridgestructure,whichconsistsofsteelTsections,issimplysupportedatitslowercorners. A

uniformdistributedloadof1000N/misappliedtothelowerhorizontalmembersintheverticaldownwarddirection.

Determinethestressesandtheverticaldisplacements.


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Analysis

Steps

1. StartAbaqusandchoosetocreateanewmodeldatabase

2. InthemodeltreedoubleclickonthePartsnode(orrightclickonpartsandselectCreate)

3. IntheCreatePartdialogbox(shownabove)namethepartand

a. Select2DPlanar

b. SelectDeformable

c.

SelectWire

d. Setapproximatesize=20

e. ClickContinue

4. Createthegeometryshownbelow(notdiscussedhere)


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5. DoubleclickontheMaterialsnodeinthemodeltree

a. Namethenewmaterialandgiveitadescription

b.

ClickontheMechanicaltabElasticityElastic

c. DefineYoungsModulusandPoissonsRatio(useSIunits)

i. WARNING: TherearenopredefinedsystemofunitswithinAbaqus,sotheuserisresponsible

forensuringthatthecorrectvaluesarespecified

d.

ClickOK


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6. DoubleclickontheProfilesnodeinthemodeltree

a. NametheprofileandselectTfortheshape

i.

NotethattheTshapeisoneofseveralpredefinedcrosssections

b. ClickContinue

c. Enterthevaluesfortheprofileshownbelow

d. ClickOK

7.

DoubleclickontheSectionsnodeinthemodeltree

a. NamethesectionBeamPropertiesandselectBeamforboththecategoryandthetype

b. ClickContinue

c. LeavethesectionintegrationsettoDuringAnalysis

d. Selecttheprofilecreatedabove(TSection)

e.

Selectthematerialcreatedabove(Steel)

f. ClickOK


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8. ExpandthePartsnodeinthemodeltree,expandthenodeofthepartjustcreated,anddoubleclickon

SectionAssignments

a.

SelecttheentiregeometryintheviewportandpressEnter

b. Selectthesectioncreatedabove(BeamProperties)

c. ClickOK

9. ExpandtheAssemblynodeinthemodeltreeandthendoubleclickonInstances

a.

Select

Dependent

for

the

instance

type

b. ClickOK


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10.DoubleclickontheStepsnodeinthemodeltree

a. Namethestep,settheproceduretoGeneral,andselectStatic,General

b.

ClickContinue

c. Givethestepadescription

d. ClickOK

11.ExpandtheFieldOutputRequestsnodeinthemodeltree,andthendoubleclickonFOutput1(FOutput1was

automaticallygenerated

when

creating

the

step)

a. UncheckthevariablesStrainsandContact

b. ClickOK


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12.ExpandtheHistoryOutputRequestsnodeinthemodeltree,andthenrightclickonHOutput1(HOutput1was

automaticallygeneratedwhencreatingthestep)andselectDelete

13.DoubleclickontheBCsnodeinthemodeltree

a.

NametheboundaryconditionedPinnedandselectDisplacement/Rotationforthetype

b. ClickContinue

c. SelectthelowerleftvertexofthegeometryandpressDoneinthepromptarea

d. ChecktheU1andU2displacementsandsetthemto0

e.

Click

OK

f.

Repeatforthelowerrightvertex,butmodelarollerrestraint(onlyU2fixed)instead


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14.DoubleclickontheLoadsnodeinthemodeltree

a. NametheloadDistributedloadandselectLineloadasthetype

b.

ClickContinue

c. SelectthelowerhorizontaledgesofthegeometrypressDoneinthepromptarea

d. Specifycomponent2 =1000

i. NotethatbecausewehavebeenusingstandardSIunitstheloadappliedis1000N/m,whichis

atotalof10,000Ndistributedacrossthelowerhorizontalmembers

e.

ClickOK

15. InthemodeltreedoubleclickonMeshfortheBridgepart,andinthetoolboxareaclickontheAssign

ElementTypeicon

a. HighlightallmembersintheviewportandselectDone

b.

SelectStandardforelementtype

c.

SelectLinearforgeometricorder

d.

SelectBeam

for

family

e. Notethatthenameoftheelement(B21)anditsdescriptionaregivenbelowtheelementcontrols

f. ClickOK


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16. InthetoolboxareaclickontheSeedEdge:ByNumbericon(holddownicontobringuptheotheroptions)

a.

Selecttheentiregeometry,exceptthelowerhorizontallines,andclickDoneinthepromptarea

b. Definethenumberofelementsalongtheedgesas5

c.

Repeatforthelowerhorizontallines,exceptspecify10elementsalongtheedges

17. InthetoolboxareaclickontheMeshParticon

a. ClickYesinthepromptarea

18. InthemenubarselectViewPartDisplayOptions

a. ChecktheRenderbeamprofilesoptionontheGeneraltab

b.

Click

OK


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19.ChangetheModuletoProperty

a. ClickontheAssignBeamOrientationicon

b.

Selecttheentiregeometryfromtheviewport

c. ClickDoneinthepromptarea

d. Acceptthedefaultvalueoftheapproximaten1direction

20.Notethatthepreviewshowsthatthebeamcrosssectionsarenotallorientatedasdesired(seeProblem

Description)

21. InthetoolboxareaclickontheAssignBeam/TrussTangenticon

a. Clickonthesectionsofthegeometrythatareoffby180degrees


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22. InthemodeltreedoubleclickontheJobnode

a. NamethejobBridge

b.

ClickContinue

c. Givethejobadescription

d. ClickOK

23. Inthemodeltreerightclickonthejobjustcreated(Bridge)andselectSubmit

a. WhileAbaqusissolvingtheproblemrightclickonthejobsubmitted(Bridge),andselectMonitor


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b. IntheMonitorwindowcheckthattherearenoerrorsorwarnings

i. Ifthereareerrors,investigatethecause(s)beforeresolving

ii.

Iftherearewarnings,determineifthewarningsarerelevant,somewarningscanbesafely

ignored

24.

Inthemodeltreerightclickonthesubmittedandsuccessfullycompletedjob(Bridge),andselectResults


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25. InthemenubarclickonViewportViewportAnnotationsOptions

a. UnchecktheShowcompassoption

b.

ThelocationsofviewportitemscanbespecifiedonthecorrespondingtabintheViewportAnnotations

Options

c. ClickOK

26.

Displaythe

deformed

contour

of

the

(Von)

Mises

stress

overlaid

with

the

undeformed

geometry

a. Inthetoolboxareaclickonthefollowingicons

i. PlotContoursonDeformedShape

ii. AllowMultiplePlotStates

iii. PlotUndeformedShape


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27. InthetoolboxareaclickontheCommonPlotOptionsicon

a. NotethattheDeformationScaleFactorcanbesetontheBasictab

b.

OntheLabelstabchecktheshownodesymbolsicon

c. ClickOK


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28.Todeterminethestressvalues,fromthemenubarclickToolsQuery

a. ChecktheboxeslabeledNodesandS,Mises

b.

Intheviewportmouseovertheelementofinterest

c. NotethatAbaqusreportsstressvaluesfromtheintegrationpoints,whichmaydifferslightlyfromthe

valuesdeterminedbyprojectingvaluesfromthesurroundingintegrationpointstothenodes

i. Theminimumandmaximumstressvaluescontainedinthelegendarefromthestresses

projectedtothenodes

d.

Clickon

an

element

to

store

it

in

the

Selected

Probe

Values

portion

of

the

dialogue

box

e. ClickCancel

29.Tochangetheoutputbeingdisplayed,inthemenubarclickonResultsFieldOutput

a. SelectSpatialdisplacementatnodes

i.

Component=U2

b.

ClickOK


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30.Tocreateatextfilecontainingthestresses,verticaldisplacements,andreactionforces(includingthetotal),in

themenubarclickonReportFieldOutput

a.

Fortheoutputvariableselect(Von)Mises

b. OntheSetuptabspecifythenameandthelocationforthetextfile

c. UnchecktheColumntotalsoption

d. ClickApply

e. BackontheVariabletabchangethepositiontoUniqueNodal

f. Uncheckthestressvariable,andselecttheU2spatialdisplacement

g.

ClickApply


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h. OntheVariabletab,uncheckSpatialdisplacementandselecttheRF2reactionforce

i. OntheSetuptab,checktheColumntotalsoption

j.

ClickOK

31.

Openthe.rptfilewithanytexteditor

a. Onethingtocheckisthatthetotalreactionforceisequaltotheappliedload(10,000N)

Beam Tutorial Abqus

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