ABAQUS顯隠轉(zhuǎn)換分析報(bào)告

.2.1TransferringresultsbetweenAbaqusanalyses:overviewProducts: Abaqus/StandardAbaqus/ExplicitAbaqus/CAEReferences“TransferringresultsbetweenAbaqus/ExplicitandAbaqus/Standard,”“Transferringresultsfromone“TransferringresultsbetweenAbaqus/ExplicitandAbaqus/Standard,”“TransferringresultsfromoneAbaqus/Standardanalysistoanother,”“TransferringresultsfromoneAbaqus/Explicitanalysistoanother,”*IMPORT*IMPORTELSET*IMPORTNSET*IMPORTCONTROLSINSTANCE“Transferring resultsbetweenAbaqusanalyses,” Section16.6oftheAbaqus/CAEUser'sManualOverviewAbaqusprovidesthecapabilitytoimportadeformedmeshanditsassociatedmaterialstatefromAbaqus/StandardintoAbaqus/Explicitandviceversa.Thiscapabilityisparticularlyusefulinmanufacturing problems;forexample,theentiresheetmetalformingprocess(whichrequiresaninitialpreloading,forming,andsubsequentspringback)canbeanalyzed.InthiscasetheinitialpreloadingcanbesimulatedwithAbaqus/StandardusingastaticprocedureandthesubsequentformingprocesscanbesimulatedwithAbaqus/Explicit.Finally,thespringbackanalysiscanbeperformedwithAbaqus/Standard.Abaqusalsoprovidesthecapability totransferdesiredresults andmodelinformationfromanAbaqus/StandardanalysistoanewAbaqus/StandardanalysisorfromanAbaqus/Explicit analysistoanewAbaqus/Explicit analysis, whereadditionalmodeldefinitionsmaybespecifiedbeforetheanalysisiscontinued.Forexample,duringanassemblyprocessananalystmayfirstbeinterestedinthelocalbehaviorofaparticularcomponentbutlaterisconcernedwiththebehavioroftheassembledproduct.Inthiscasethelocalbehaviorcanfirst beanalyzedinanAbaqus/StandardorAbaqus/Explicitanalysis.Subsequently,themodelinformationandresultsfromthisanalysiscanbetransferredtoasecondAbaqus/StandardorAbaqus/Explicitanalysis,whereadditionalmodeldefinitionsfortheothercomponentscanbespecified,andthebehavioroftheentireproductcanthenbeanalyzed.Forthiscapabilitytowork,thesamereleaseofAbaqus/Explicit andAbaqus/Standardmustberunoncomputersthatarebinarycompatible.ABAQU可以從隱式計(jì)算結(jié)果到顯示計(jì)算進(jìn)行分析， ，該問(wèn)題在求解一些問(wèn)題是非常有用的，例如薄鋼的鍛造過(guò)程(經(jīng)歷預(yù)加載，成形和回彈)，該分析預(yù)加載可以通過(guò) std分析，鍛造過(guò)程可以通過(guò)XPT進(jìn)行分析，最后回彈可以再用 std進(jìn)行分析。ABAQUS也提供了從隱式分析到隱式分析和從顯示分析到顯示分析， 例如可以先對(duì)感興趣的局部構(gòu)件進(jìn)行分析， 分析完成后，在對(duì)整個(gè)結(jié)構(gòu)作分析，前部的分析結(jié)果可以傳到后面的整體分析中。SavingtheanalysisresultsTherestartfilesfromtheoriginalanalysiscontaintheanalysis resultsthataretransferredfromAbaqus/StandardorAbaqus/Explicit.Obtainingrestartfilesisdescribedinmoredetailin“Writingrestartfiles”in“Restartingananalysis,”Section9.1.1;briefsummariesareprovidedbelow.Bydefault,Abaqus/Standarddoesnotwriteanyrestart information andAbaqus/Explicitwritesresultsatthebeginningandendofeachstep.SavingresultsfromAbaqus/StandardIftheresultsaretobeimportedfromanAbaqus/Standardanalysis,theresultsfromtheoriginalAbaqus/Standardjobmustbewrittentotherestart(.res),analysisdatabase(.mdland.stt),part(.prt),andoutputdatabase(.odb)files.Youcanspecifytheincrementsatwhichrestartinformationwillbewritten.RestartinformationisalwayswrittenattheendofastepinadditiontotherequestedincrementswheneveryourequestrestartdatainAbaqus/Standard.InputFileUsage: *RESTARTWRITE,FREQUENCY=保存分析結(jié)果重啟動(dòng)文件包含了之前分析的信息，關(guān)于重啟動(dòng)的描述參閱" Writingrestartfiles”in“Restartingananalysis, ”Section9.1.1 ;下面做簡(jiǎn)要介紹，默認(rèn)情況下, std不保存重啟動(dòng)文件，xpt在每個(gè)分析部開(kāi)始和結(jié)束步保存重啟動(dòng)文件 。Std結(jié)果保存如果想從std分析后獲得結(jié)果，原始的std分析必須保留重啟文件 (.res)，分析數(shù)據(jù)(.mdland.stt)，PART(.prt),和輸出數(shù)據(jù)(.odb)文件，用戶(hù)可以指定具體的重啟位置，重啟信息除了在請(qǐng)求的位置輸出外在每一分析步的最后也將輸出。Input File*RESTARTWRITE,FREQUENCY=nUsage:Abaqus/CAEStepmodule:Output―<RestartRequests:enterninthe FrequencyUsage: columnforeachstepXpt結(jié)果保存如果想要從某一時(shí)刻輸入 xpt分析的結(jié)果，則必須在原始的結(jié)果文件中保存 .abq狀態(tài)文件，狀態(tài)文件重啟文件數(shù)據(jù)文件，PART文件和結(jié)果文件共同用來(lái)從 xpt分析后的結(jié)果作為輸入。可以具體指定是否精確的時(shí)間輸出 xpt重啟文件，因?yàn)閤pt會(huì)在每個(gè)分析步的最后給出重啟文件。Input FileUsethefollowingoptiontorequestresultsattheincrementsendingUsage: immediatelyaftereachtimeinterval:*RESTARTWRITE,NUMBERINTERVALS,TIMEMARKS=NOUsethefollowing optiontorequestresultsattheexacttimeintervals:*RESTARTWRITE,NUMBERINTERVALS,TIMEMARKS=YESAbaqus/CAEStepmodule:OutputRestartRequests:enternintheNumberIntervalUsage: column;clicktochecktheTimeMarkscolumnforeachstepifyouwanttheresultswrittenattheexacttimeintervalsSavingresultsfromAbaqus/ExplicitIftheresultsaretobeimportedfromanAbaqus/Explicitanalysis,theresultsfromtheoriginalAbaqus/Explicitjobmustbewrittentothestate(.abq)fileatthetimewhentransferofthestateofthedeformedbodyisrequired.Thestate(.abq),restart(.res),analysisdatabase(.stt),package(.pac),part(.prt),andoutputdatabase(.odb)fileswillbeusedforimportingtheresultsfromAbaqus/Explicit.Youcanspecifywhethertheresultsaretobewrittenattheexacttimedictatedbythespecifiedtimeinterval, n,duringastepofanAbaqus/Explicitanalysisorattheincrementendingafterthetimedictatedbythespecifiedtimeinterval.Resultsarealwayswrittenattheendofastep,soitisnotnecessarytorequestresultsattheexacttimeintervalsifresultswillbereadonlyfromtheendofastep.Input FileUsethefollowingoptiontorequestresultsattheincrementsendingUsage: immediatelyaftereachtimeinterval:*RESTARTWRITE,NUMBERINTERVALS,TIMEMARKS=NOUsethefollowing optiontorequestresultsattheexacttimeintervals:*RESTARTWRITE,NUMBERINTERVAL^,TIMEMARKS=YESAbaqus/CAEStepmodule:OutputRestartRequests:enternintheNumberIntervalUsage: column;clicktochecktheTimeMarkscolumnforeachstepifyouwanttheresultswrittenattheexacttimeintervals指定模型數(shù)據(jù)的傳遞和結(jié)果下面講解如何指定具體的輸入請(qǐng)求，從一個(gè)模型數(shù)據(jù)和結(jié)果輸入到另一個(gè)模型數(shù)據(jù)和結(jié)果，用戶(hù)可以輸入從沒(méi)有被定義成裝配件的實(shí)例的 elementset，或者可以輸入part實(shí)例從已經(jīng)定義成裝配件實(shí)例的 part實(shí)例。在CAE里面僅僅能從裝配件的構(gòu)件實(shí)例中輸入模型。指定從elementset 中輸入數(shù)據(jù)和結(jié)果。輸入的例子參見(jiàn)“Springbackoftwo-dimensionaldrawbending,”Section1.5.1oftheAbaqusExampleProblemsManual,and“Axisymmetricformingofacircularcup, ”Section1.3.7oftheAbaqusExampleProblemsManual 。Input Usethefollowingoptiontoimportelementsetsfromapreviousanalysis:FileUsage:*IMPORTlistofelementsetsthataretobeimported為了阻止模棱兩可的單元和節(jié)點(diǎn)， *import必須在定義額外模型數(shù)據(jù)前指定，另外 *import只能指定一次每個(gè)elementset的名字在*import 輸入行必須在原始文件的截面定義中使用過(guò)，(e.g.*solidsection)，elementset 僅能包含不超過(guò)三種類(lèi)型的單元。在CAE里面只能從PARTINSTANCES!面輸入結(jié)果和數(shù)據(jù)如果輸入的超過(guò)一個(gè)partinstance,part instanee必須從一個(gè)結(jié)果文件里輸入且輸入的參數(shù)必須和輸入文件partinstances里面的一致，每個(gè)instanee的名字應(yīng)該保持一致，只有importinstanee 里面的sets才能被輸入，sets在assemblies定義的必須在import分析中重新定義，重新定義的 sets不能修改輸入的新截面，材料的方向，法線(xiàn)，和梁方向Input FileUsethefollowing optionstoimportapartinstaneefromapreviousUsage: analysis:INSTANCEINSTANCESnstanee-nameAdditionalsetandsurfacedefinitions(optional)*IMPORT*ENDINSTANCEAbaqus/CAEInAbaqus/CAEyoucanimportmodeldataandresultsonlyfrommodelsUsage: thataredefinedasassembliesofpartinstances.Loadmodule:CreatePredefinedField:Step:Initial:chooseOtherfortheCategoryandInitialStatefortheTypesforSelectedStep:selecttheinstancestowhichtheinitialstateshouldbeassignedSpecifyingthetransferof modeldataandresultsTheimportcapabilityisusedto transfermodeldataandresultsfromoneanalysistoanother.Thefollowing sectionsdescribehowtospecifytheimportrequest.Youcanimportelementsetsfrommodelsthatarenotdefinedasassembliesofpartinstances, oryoucanimportpartinstances frommodelsthataredefinedasassembliesofpartinstances.InAbaqus/CAEyoucanimportmodeldataandresultsonlyfrommodelsthataredefinedasassembliesofpartinstances.Specifyingthetransferofmodeldataandresultsformodels thatarenotdefinedasassembliesofpartinstancesYoucanimportelementsetsfromapreviousanalysistospecifythetransferofmodeldataandresultsformodelsthatarenotdefinedasassembliesofpartinstances.Thisimportcapabilityisillustratedin “Springbackoftwo-dimensionaldrawbending,”Section1.5.1oftheAbaqusExampleProblemsManual,and“Axisymmetricformingofacircularcup, ”Section1.3.7oftheAbaqusExampleProblemsManualInput FileUsethefollowing optionstoimportapartinstaneefromapreviousUsage: analysis:INSTANCE,INSTANCE=instance-nameAdditionalsetandsurfacedefinitions(optional)*IMPORT*ENDINSTANCEAbaqus/CAEInAbaqus/CAEyoucanimportmodeldataandresultsonlyfrommodelsUsage: thataredefinedasassembliesofpartinstances.Loadmodule:CreatePredefinedField:Step:Initial:chooseOtherfortheCategoryandInitialStatefortheTypesforSelectedStep:selecttheinstancestowhichtheinitialstateshouldbeassignedIdentifyingtheanalysisfromwhichthedatawillbeobtainedYoumustspecifythenameofthejobfromwhichthemodelandresultsdatawillbeobtained.InputFile Forallmodelsyoucanenterthefollowinginputonthecommandline:Usage:abaqusjob=job-nameoldjob=oldjob-nameIftheoldjobparameterisomitted,Abaquswillpromptforthejobname(see “Abaqus/Standard,Abaqus/Explicit,andAbaqus/CFDexecution, ”Section3.2.2 ).Alternatively,formodelsdefinedasassembliesofpartinstances,youcanusethefollowingoption:INSTANCELIBRARY=oldjob-nameIfyouimportmorethanonepartinstanee,the oldjob-namespecifiedbytheLIBRARYparametermustbethesameforeachimportedpartinstanee.Ifthejobnameisspecifiedonthecommandlineusingtheoldjoboption,thecommandlinespecificationwilltakeprecedeneeovertheLIBRARYparameter.Abaqus/CAEInAbaqus/CAEyoucanimportmodel dataandresultsonlyfrom modelsUsage: thataredefinedasassembliesofpart instances.Loadmodule:CreatePredefined Field:Step:Initial: chooseOther fortheCategoryandInitialState fortheTypesforSelectedStep: Jobname:output-database-name從包含的數(shù)據(jù)文件中指定分析數(shù)據(jù)

必須具體制定包含數(shù)據(jù)和結(jié)果文件的名字InputFile Forallmodelsyoucanenterthefollowing inputonthecommandline:Usage:Importingmodeldata"Updatingtheimportedconfiguration”)"Updatingtheimportedconfiguration”)”).In("Orientations, ”Section2.2.5),"Importingthematerialstatehourglassstiffnessbutnothourglasscontroldefinitions,andtransverseshearstiffness definitions (inthecaseofshellelements)oftheimportedelementscanalsoberedefined.Forotherreferenee configuration andmaterialstatecombinations, theinformationrequiredto definethesection foreachimportedelementwillbeimportedfromtheoriginal analysis. Materialorientations cannotberedefinedintheimportanalysis;orientationnamescannotbereusedintheimportanalysis.Forimportedelements,thematerial orientations willbetransferred fromtheoriginal analysis. Transverseshearstiffnessforimportedshellelementscannotberedefined;thevalueswillbetransferredfromtheoriginalanalysis.HourglassstiffnessfortheimportedelementscannotberedefinedinanAbaqus/Standardimportanalysis;thedefaultvalueswillbeused.Thesectioncontroldefinitions(kinematicformulation, orderofaccuracyintheelementformulation,andhourglasscontrol approach)tobeusedforimportedelementscannotberedefined(see “TransferringresultsbetweenAbaqus/ExplicitandAbaqus/Standard, ”Section9.2.2 ,fordetails).Onlynodesassociatedwiththeimportedelementsareimported.Newnodescanbedefinedintheimportanalysis.Nodesorelementsthatusethesamenumbersasnodesorelementsbeingimportedcanbedefinedprovidedthatthereferenceconfiguration isupdated,thematerialstateisnotimported,andtheimportisnotdonefromaninstancelibrary.Thenewdefinitions willoverwritetheimporteddefinitions.Ifthereferenceconfigurationisnotupdated,newnodesorelementscannotusetheimportednodeandelementnumbersirrespectiveofwhetherornotthematerialstateisimported.Duringresultstransfer fromanAbaqus/StandardanalysistoanotherAbaqus/StandardanalysisorfromanAbaqus/ExplicittoanotherAbaqus/Explicit analysis, thecoordinates ofimportednodescanbemodified fromtheirimportedvaluesbyrespecifyingthenodaldefinitionsifthereferenceconfigurationisupdatedandthematerial stateisnotimported.Thismodificationofthecoordinatesofimportednodesisnotallowed during transferofresultsfromAbaqus/ExplicittoAbaqus/Standardorviceversa.ImportingmodeldatadefinedbyadistributionWhile transferring resultsfromoneAbaqus/Standard analysis to anotherAbaqus/Standard analysis,mostelementormaterialpropertiesdefinedbyadistribution(see “Distributiondefinition, ”Section2.7.1 )areimportedalongwiththeelements. Theonlyexceptions arespatiallyvarying thicknesses andorientationanglesdefinedonthelayersofcompositeshellsandsolids;inthiscaseAbaqusissuesanerrormessageduringinputfilepreprocessing.WhiletransferringresultsfromanAbaqus/ExplicitanalysistoanAbaqus/Standardanalysis,theonlyspatiallyvaryingelementpropertiesdefinedbyadistributionthatcanbeimportedareshellthicknessesandsectionorientationsforshellandsolidelements.Ifanyotherelementormaterialpropertiesaredefinedwithadistribution,Abaqusissuesanerrormessageduringinputfilepreprocessing.WhiletransferringresultsfromanAbaqus/StandardanalysistoanAbaqus/ExplicitanalysisorfromanAbaqus/ExplicitanalysistoanotherAbaqus/Explicitanalysis,theonlyspatiallyvaryingelementpropertiesdefinedbyadistributionthatcanbeimportedareshellthicknesses, sectionorientationsforshellandsolidelements,orientation anglesdefinedonthelayersofcompositeshells,andsectionstiffnessmatricesspecifieddirectlyforgeneralshellsections.Ifanyotherelementormaterialpropertiesaredefinedwithadistribution, Abaqusissuesanerrormessageduringinputfilepreprocessing.ImportingresultsfromanAbaqus/Standardanalysis(otherthanadirectcyclicanalysis)IftheresultsareimportedfromanAbaqus/Standardanalysis,youcanspecifythestepandincrementintherestartfileforwhichtheresultsaretobeimported.Bydefault,theresultswrittenattheendoftheanalysisareimported.InputFile*IMPORTSTEP=step,INCREMENT#ncrementUsage:Formodelsthataredefinedasassembliesofpartinstances, the*IMPORToptionmustappearwithinapartinstancedefinition.Abaqus/CAEInAbaqus/CAEyoucanimportmodeldataandresultsonlyfrommodelsUsage: thataredefinedasassembliesofpartinstances.Loadmodule:CreatePredefinedField:Step:Initial:chooseOtherfortheCategoryandInitialStatefortheTypesforSelectedStep:selectinstances:Step:selectSpecify:stepandFrame:selectSpecify:incrementImportingresultsfromanAbaqus/StandarddirectcyclicanalysisIftheresultsareimportedfromadirectcyclicanalysis,youcanspecifythestepanditerationnumberintherestartfileforwhichtheresultsaretobeimported.Bydefault,theresultswrittenattheendoftheanalysisareimported.InputFile*IMPORTSTEP=step,ITERATION=iterationUsage:Formodelsthataredefinedasassembliesofpartinstances, the*IMPORToptionmustappearwithinapartinstancedefinition.Abaqus/CAEInAbaqus/CAEyoucanimportmodeldataandresultsonlyfrommodelsUsage: thataredefinedasassembliesofpartinstances.Loadmodule:CreatePredefinedField:Step:Initial:chooseOtherfortheCategoryandInitialStatefortheTypesforSelectedStep:selectinstances:Step:selectSpecify:stepandFrame:selectSpecify:iterationImportingresultsfromanAbaqus/ExplicitanalysisIftheresultsareimportedfromanAbaqus/Explicitanalysis,youcanspecifythestepandintervalinthestatefileforwhichtheresultsaretobeimported.Bydefault,theresultswrittenattheendoftheanalysisareimported.InputFile*IMPORTSTEP=step,INTERVALSntervalUsage:Formodelsthataredefinedasassembliesofpartinstances,the*IMPORToptionmustappearwithinapartinstancedefinition.Abaqus/CAEInAbaqus/CAEyoucanimportmodeldataandresultsonlyfrommodelsUsage: thataredefinedasassembliesofpartinstances.Loadmodule:CreatePredefinedField:Step:Initial:chooseOtherfortheCategoryandInitialStatefortheTypesforSelectedStep:selectinstances:Step:selectSpecify:stepandFrame:selectSpecify:intervalUpdatingtheimportedconfigurationOncethecurrentmodelconfiguration ofanAbaqusanalysisisimportedintoAbaqus/ExplicitorAbaqus/Standard,theanalysiscanbecontinuedwithorwithoutupdatingthereferenceconfigurationtobetheimportedconfiguration.Ifthe

reference configuration isnotupdatedtobetheimportedconfiguration, thedisplacementsandstrainsarereportedastotalvaluesrelativetotheoriginalreference configuration andwill,hence,becontinuous. Ifthereferenceconfiguration isupdatedtobetheimportedconfiguration, displacementsandstrainsreportedintheimportanalysis arethetotalvaluesrelativetotheupdatedreferenceconfiguration.Thischoiceisusefulifresultsneedtobedisplayedrelativetotheimportedconfiguration,suchasmaybedesirableinspringbackanalysis.Thereferenceconfigurationcannotbeupdatediftheimportedanalysisisgeometricallylinear.Ifconnectorelementsareimported,theconfiguration canbeupdatedprovidedthatthestateisnotimported.Input FileUsethefollowingoptiontospecifythattherefereneeconfigurationUsage: istobeupdatedtotheimportedconfiguration:*IMPORTSTEP=step,UPDATE=YESUsethefollowingoptiontospecifythattherefereneeconfigurationshouldnotbeupdatedtotheimportedconfiguration:*IMPORTSTEP=step,UPDATE=NOFormodelsthataredefinedasassembliesofpartinstances, the*IMPORToptionmustappearwithinapartinstancedefinition.Abaqus/CAEUsage:InAbaqus/CAEyoucanimportmodeldataandresultsonlyfrommodelsAbaqus/CAEUsage:thataredefinedasassembliesofpartinstances.Loadmodule:CreatePredefinedField:Loadmodule:CreatePredefinedField:Step:InitialchooseOtherforfortheTypesforSelectedonoroffStep:fortheTypesforSelectedonoroffStep:toggleImportingthematerialstateYoucanspecifywhetherornottheassociatedmaterialstateshouldbeimported.Ifyouchoosetoimportthematerialstate,thefollowingareimported:?stresses;? equivalentplasticstrains;?backstressesforthekinematichardeningmodels;? user-definedstatevariables;?damage-relatedstatevariablesfortheconcretedamagedplasticitymodel;?damage-relatedstate-variablesfor traction-separation response withcohesiveelements;damage-relatedstatevariablesforductilemetals;

????damage-relatedstatevariablesforfiber-reinforcedcomposites;maximumdeviatoricstrainenergydensityduringdeformationhistoryforMullinseffect;internalstrainsandstressesforviscoelasticmaterialmodels;andconnectorstatevariablessuchasplasticstrains,frictionalslip,anddamagestate.Thus,thestateisimportedcorrectlyforfurtheranalysisonlyforthefollowing:linearelasticity,Misesplasticity(includingthekinematichardeningmodels),extendedDrucker-Pragerplasticity,crushablefoamplasticity,Mohr-Coulombplasticity,criticalstate(clay)plasticity,castironplasticity,concretedamagedplasticity,hyperelasticity(includingMullinseffect),hyperfoam,viscoelasticity,traction-separationresponsewithdamageforcohesiveelements,damageforductilemetals,damageforfiber-reinforcedcomposites,connectorbehavior,andmaterialsdefinedinusersubroutines UMATandVUMATForallothermaterialmodelsonlystresseswillbeimported.Nootherstatevariableswillbeimported.linearelasticity,Misesplasticity(includingthekinematichardeningmodels),extendedDrucker-Pragerplasticity,crushablefoamplasticity,Mohr-Coulombplasticity,criticalstate(clay)plasticity,castironplasticity,concretedamagedplasticity,hyperelasticity(includingMullinseffect),hyperfoam,viscoelasticity,traction-separationresponsewithdamageforcohesiveelements,damageforductilemetals,damageforfiber-reinforcedcomposites,connectorbehavior,andmaterialsdefinedinusersubroutines UMATandVUMATIfthematerialbehaviorisdefinedinausersubroutine,youmustensurethattheUMATandVUMATireconsistent.Ifconnectorelementsareimported,thestatecanbeimportedprovidedthattheconfigurationisnotupdated.Input FileUsethefollowingoptiontospecifythatthematerialstateshouldbeUsage: imported:*IMPORTSTATE=YESUsethefollowingoptiontospecifythatthematerialstateshouldnotbeimported:*IMPORTSTATE=NOFormodelsthataredefinedasassembliesofpartinstances, the*IMPORToptionmustappearwithinapartinstaneedefinition.Abaqus/CAEInAbaqus/CAEyoucanimportmodeldataandresultsonlyfrommodelsUsage: thataredefinedasassembliesofpartinstances.Abaqus/CAEalwaysimportsthematerialstate.Ifyouwanttoimportonlythedeformedmesh,youcanimportanorphanmeshfromaselectedstepandincrementofanoutputdatabase;see“WhatkindsoffilescanbeimportedandexportedfromAbaqus/CAE?,”Section10.1.1oftheAbaqus/CAEUser'sManualRedefiningconstraintsuponimportMostconstraints(suchasmulti-point constraints andsurface-basedtieconstraints)arenotimportedfromtheoriginalanalysisandmustberedefinedintheimportanalysis.Forconstraints suchassurface-basedtiesitisappropriatetoredefinetheseconstraintsintheoriginalreferenceconfiguration.Thisensuresidenticalconstraintdataareregeneratedintheimportanalysis.InanAbaqus/Standardanalysiswithadaptivemeshingandacoustic-to-structuretieconstraints, thestructuralaswellastheacousticnodesmaymovefromtheirinitialpositions.WhensuchacousticandstructuremeshesareimportedfromAbaqus/StandardintoAbaqus/Explicitandthetieconstraintisredefined,theacousticelementsattheinterfacemayappeardistortedwhenviewedintheundeformedplotmodeintheVisualizationmoduleofAbaqus/CAE(thedeformedplotattime=0displaysthecorrectmesh).Toregenerateconstraintsintheoriginalconfiguration,specifythatthereferenceconfigurationshouldnotbeupdatedtotheimportedconfiguration.Ifanewconstraint isdefinedintheimportanalysis,itisappropriatetogeneratetheconstraintdatabasedonthecurrentconfiguration.See “Updatingtheimportedconfiguration ”aboveformoreinformation.ImportingelementsetandnodesetdefinitionsAllelementsetandnodesetdefinitionsassociatedwiththeimportedelementsareimportedbydefault.Formodelsthatarenotdefinedasassembliesofpartinstances,youcanalsoselectivelyimportonlyspecifiedelementsetornodesetdefinitions.Thiscapabilityprovidesaconvenientwayofselectivelyreusingtheelementornodesetsdefinedintheoriginalanalysis.However,anymembersofsuchsetsthatdonotbelongtotheimportedelementsareremovedfromthespecifiedsets.Forexample,supposethreeelementsets—SHELL3D,MEMBandALL—aredefinedintheoriginalanalysis.ElementsetALLcontainsalloftheelementsinelementsetsSHELL3DandMEMB,aswellasotherelements.YouchoosetoimportonlytheelementsetsSHELL3DandMEMB(i.e.,theelementsinthesesetsaswellastheelementsetdefinitions).Inaddition,youselectivelyimporttheelementsetdefinitionALL(butnottheelementsinthisset).Ifelement100belongstoelementsetALLbutnottoeitherelementsetSHELL3DorelementsetMEMB,itwillnotbeimportedandwillberemovedfromthelistofelementsbelongingtoelementsetALL.Theimportedelementsetdefinitionsareprocessedbeforeanynodeorelementdefinitions;therefore,evenifelement100issubsequentlyredefinedintheimportanalysis,itwillnotbelongtoelementsetALL(uniessitisexplicitlyassignedtoelementsetALLintheimportanalysis).Onlynodeandelement setsdefinedinthe originalorpreviousimport analysis areavailable forimporting. Newsetsdefinedduringarestartruncannotbeimported.Input UseeitherorbothofthefollowingoptionsimmediatelyfollowingtheFile *IMPORToptiontoimportselectedelementornodesetdefinitions:Usage:*IMPORTELSET*IMPORTNSETFormodelsthataredefinedasassembliesofpartinstances,youcannotselectivelyimportelementandnodesetdefinitions. Allelementandnodesetdefinitionsareimportedautomatically.Abaqus/CAEInAbaqus/CAEyoucanimportmodeldataandresultsonlyfrommodelsUsage: thataredefinedasassembliesofpartinstances. Youcannotselectivelyimportelementandnodesetdefinitions inAbaqus/CAE.Allelementandnodesetdefinitionsareimportedautomatically.SpecifyingatoleraneeforshellnormalsintheupdatedconfigurationWhentheimportedconfigurationisupdateduponimport,themeshdiscretizationmaynotsatisfythemeshgeometrychecksimposedinAbaqus/ExplicitorAbaqus/Standardtoevaluatewhetherornotameshisreasonable.Inthecaseofhighlywarpedshellelementsitispossiblethatthenormalatthecenteroftheelementthatiscalculatedfromthemidsurfaceinterpolationmaydifferfromthenormalthatisinterpolatedfromtherotatednormalsatthenodes.Ifthediffereneeexceedsthetolerancespecified,theanalysiswillterminate.Thissuggeststhatafinemeshmayberequiredtomodelareasofhighcurvaturechangetoachieveasuccessfulanalysis.Theunitnormalcomputedfromthemidsurfaceinterpolation, 量：i,andthatpredictedbytheinterpolationoftherotatednormalsatthenodes, '_,mustsatisfythecondition:1一5|Hi■1121?whereyoucanspecifythetolerance, .Ifyoudonotspecifyatolerance value,adefaultvalueofW=0.1isused.InputFileIfyouupdatethereferenceconfigurationtobetheimportedUsage: configuration,youcanspecifyatoleraneeforerrorcheckingonshellnormals:*IMPORTCONTROLNORMALTOL=Abaqus/CAEUsage:TheshellnormaltoleraneeisnotsupportedinAbaqus/CAE.AbaqusAnalysisUser'sManual9.2.2TransferringresultsbetweenAbaqus/ExplicitandAbaqus/StandardProducts:Abaqus/StandardAbaqus/ExplicitAbaqus/CAEReferences? “