2010 Hormoz Zareh 1 Portland State University, Mechanical Engineering

AbaqusCAE(ver.6.9)ContactTutorial

ProblemDescription

Note: You do not need to extrude the right vertical edge of the sensor.

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AnalysisSteps1. StartAbaqusandchoosetocreateanewmodeldatabase2. InthemodeltreedoubleclickonthePartsnode(orrightclickonpartsandselectCreate)

3. IntheCreatePartdialogbox(shownabove)namethepartand

a. Select3Db. SelectDeformablec. SelectShelld. SelectExtrusione. Setapproximatesize=50f. ClickContinue

4. Createthegeometryshownbelow(notdiscussedhere)

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a. ClickDone

b. SetDepth=2c. ClickOK

5. DoubleclickontheMaterialsnodeinthemodeltree

a. Namethenewmaterialandgiveitadescriptionb. ClickontheMechanicaltab Elasticity Elasticc. DefineYoungsModulusandthePoissonsRatio(useSI(mm)units)d. ClickOK

6. DoubleclickontheSectionsnodeinthemodeltree

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a. NamethesectionShellPropertiesandselectShellforthecategoryandHomogeneousforthetype

b. ClickContinuec. Selectthematerialcreatedabove(Steel)andsetthethicknessto0.15d. ClickOK

7. ExpandthePartsnodeinthemodeltree,expandthenodeofthepartjustcreated,anddoubleclickon

SectionAssignmentsa. Selecttheentiregeometry,exceptfortheverticalface,intheviewportandpressDoneinthe

promptareab. Selectthesectioncreatedabove(ShellProperties)c. Specifyshelloffsetifnecessaryd. ClickOK

8. ExpandtheAssemblynodeinthemodeltreeandthendoubleclickonInstances

a. SelectDependentfortheinstancetypeb. ClickOK

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9. DoubleclickontheStepsnodeinthemodeltree

a. Namethestep,settheproceduretoGeneral,selectStatic,General,andclickContinueb. Acceptthedefaultsettings

10. DoubleclickontheBCsnodeinthemodeltree

a. NametheboundaryconditionedFixedandselectSymmetry/Antisymmetry/Encastreforthetype

b. SelectthehorizontaledgesontheverticalsurfaceandclickDonec. SelectENCASTREfortheboundaryconditionandclickOK

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11. DoubleclickontheBCsnodeinthemodeltree

a. NametheboundaryconditionedDispandselectDisplacement/Rotationforthetypeb. Selectthetopedgeofthetriangularportionofthegeometryc. Settheydisplacementto3

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12. DoubleclickontheInteractionPropertiesnodeinthemodeltreea. NametheinteractionpropertiesandselectContactforthetype

b. OntheMechanicaltabSelectTangentialBehavior

i. SetthefrictionformulationtoFrictionlessc. OntheMechanicaltabSelectNormalBehavior

i. Becausethesurfacesdonotstartincontact,changetheconstraintenforcementmethodtoPenalty

13. DoubleclickontheInteractionsnodeinthemodeltree

a. Nametheinteraction,selectSurfacetosurfacecontact,andclickcontinueb. Forthemastersurfaceselectthelowerportionofthegeometryandclickdone

i. Whileapplyingthefixeddisplacement,thenodesatthetipoftheupperportionofthegeometrywillmakecontactatanunknownlocationonthelowersurface

ii. Nodesontheslavesurfacecannotpenetratethesurfaceformedbytheelementfacesonthemastersurface

c. Selectthecolorofthesurfacecorrespondingtothetopsurfaced. Fortheslavesurface,settheslavetypetoSurfacee. Selecttheupperportionofthegeometryatthefreeendandclickdonef. Selectthecolorofthesurfacecorrespondingtothebottomsurfaceg. Changethecontactinteractionpropertiestotheonecreatedabove(ifnotalreadydone)

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14. InthemodeltreedoubleclickonMeshfortheArchpart,andinthetoolboxareaclickontheAssignElementTypeicon

a. Selecttheportionofthegeometryassociatedwiththeboundaryconditionsandloadb. SelectStandardforelementtypec. SelectLinearforgeometricorderd. SelectShellforfamilye. Notethatthenameoftheelement(S4R)anditsdescriptionaregivenbelowtheelementcontrolsf. SelectOK

15. InthetoolboxareaclickontheAssignMeshControlsicon

a. Selecttheportionofthegeometryassociatedwiththeboundaryconditionsandloadb. ChangetheelementshapetoQuadc. ChangethetechniquetoStructured

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16. InthetoolboxareaclickontheSeedParticona. Settheapproximateglobalsizeto0.25

17. InthetoolboxareaclickontheMeshRegionicon

b. Selecttheentiregeometry,exceptfortheverticalfacec. SelectDone

18. InthemodeltreedoubleclickontheJobnode

a. Namethejobswitchb. Givethejobadescription

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19. InthemodeltreerightclickonthejobjustcreatedandselectSubmit

d. Ignorethemessageaboutunmeshedportionsofthegeometrye. WhileAbaqusissolvingtheproblemrightclickonthejobsubmitted,andselectMonitor

f. IntheMonitorwindowcheckthattherearenoerrorsorwarnings

i. Ifthereareerrors,investigatethecause(s)beforeresolvingii. Iftherearewarnings,determineifthewarningsarerelevant,somewarningscanbesafely

ignored

20. Inthemodeltreerightclickonthesubmittedandsuccessfullycompletedjob,andselectResults

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21. Displaythedeformedcontourofthe(Von)Misesstressoverlaidwiththeundeformedgeometry

a. Inthetoolboxareaclickonthefollowingiconsi. PlotContoursonDeformedShapeii. AllowMultiplePlotStatesiii. PlotUndeformedShape

22. InthetoolboxareaclickontheCommonPlotOptionsicon

a. SettheDeformationScaleFactorto1b. ClickOK

23. Tochangetheoutputbeingdisplayed,inthemenubarclickonResults FieldOutput

a. Selectthecontactpressureatsurfacenodes(CPRESS)b. ClickOK

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