Ls-dyna-高级教程-关键字讲解--Lectures-1

1NonlinearFiniteElementModelingandSimulationCE6705Week1GeneralFEAProcessLS-DYNABackgroundHistoryLS-DYNAInputFormatKeywordFormatStructuralFormatHistoryCapabilitiesApplicationFEMAnalysisProceduresPre-process:ModelSetupSolution-procedure:SolverPost-process-AnalysisExampleofanInputDeckComputerSessionDepartmentofCivilandEnvironmentalEngineeringTheGeorgeWashingtonUniversitypyGeneralFEAProcessModelDevelopment-Pre-processingDiscretizeGeometry:Nodes/ElementsGeometryproperties:Thickness/Cross-sectionMaterialpropertiesLoadingconditionsConstraintsBoundaryconditionsDepartmentofCivilandEnvironmentalEngineeringTheGeorgeWashingtonUniversitySolver-SolutionprocessingNumericalsolutionofequationsofmotionGeneralFEAProcessPost-processing:ResultsAnalysisDeformedgeometryDisplacements,velocities,accelerationsStressandstrainReactionforcesEnergiesFEModelImprovementDepartmentofCivilandEnvironmentalEngineeringTheGeorgeWashingtonUniversityUpdateModelbasedontheanalysisresultsIterativeprocessuntilobjectivesachieved2GeneralFEAProcessModelDevelopment-Pre-processingLS-INGRID,FEM-BI-DEAS,True-Grid,EasiCrash,,PATRAN,HyperMeshSolver-SolutionprocessingLS-DYNA,PamCrash,RADIOSSNASTRAN,ANSYS,AlgorResultsAnalysis-Post-processingDepartmentofCivilandEnvironmentalEngineeringTheGeorgeWashingtonUniversityResultsAnalysisPostprocessingLS-TAURUS,LS-POSTHyperMeshBackgroundandHistoryofLS-DYNA1976DYNA3DdevelopedatLawrenceLivermoreNationalLaboratorybyJohnHallquistLowvelocityimpactofheavy,solidstructures,militaryapplications1979DYNA3DportedonCray-1ImprovedslidinginterfaceOrderofmagnitudefasterDepartmentofCivilandEnvironmentalEngineeringTheGeorgeWashingtonUniversityOrderofmagnitudefaster1981Newmaterialmodels-Explosive-structure,Soil-structureImpactsofpenetrationprojectilesBackgroundandHistoryofLS-DYNA1986Beams,Shells,RigidBodiesSingleSurfaceContactSingleSurfaceContactSupportforMultipleComputerPlatforms1988AutomotiveApplicationsSupportLS-DYNA1989DepartmentofCivilandEnvironmentalEngineeringTheGeorgeWashingtonUniversity1989FullCommercialVersionLSTCBackgroundandHistoryofLS-DYNA1993KeywordFormatAutomaticSingleSurfaceContactAutomaticSingleSurfaceContact1stInternationalLS-DYNAUserConference1995TrainingLabEstablishedatWestCoast-LSTC1997TiiClSdECNCAC/GWUDepartmentofCivilandEnvironmentalEngineeringTheGeorgeWashingtonUniversityTrainingClassStartedatEastCoast-NCAC/GWUTodayReleaseofVersionLS971,ManyNewFeatures3GeneralCapabilitiesTransientdynamicsQuasi-staticsimulationsFlexibleandrigidbodiesFlexibleandrigidbodiesNonlinearmaterialbehaviorMorethan200constitutiverelationshipsMorethan80elementformulationFinitestrainandfiniterotationGeneralcontactalgorithmDepartmentofCivilandEnvironmentalEngineeringTheGeorgeWashingtonUniversityGeneralcontactalgorithmThermalAnalysisExplicitandimplicitanalysesGeneralCapabilitiesPre-stressandPost-stressInteractivegraphicsPreprocessor-LS-PrePostThirdpartyinterfacesPostprocessor,LS-PrePostOtherrigidbodyprogramcouplingCADdtitfDepartmentofCivilandEnvironmentalEngineeringTheGeorgeWashingtonUniversityCADdatainterfaceApplicationsAutomotive,train,ship,andaerospacecrashworthinessSheetandbulkformingprocesssimulationEnginebladecontainmentandbirdstrikeanalysisSeismicsafetysimulationWeaponsdesignandexplosivedetonationsimulationBiomechanicssimulationIndustrialaccidentssimulationDepartmentofCivilandEnvironmentalEngineeringTheGeorgeWashingtonUniversityDropandimpactanalysisofconsumerproductRoadsideHardwareAnalysisVirtualprovinggroundsimulationLS-DYNAInputFileFormatStructuredInputFormatOriginalFormatOrganizedbyEntitiesFixedFormatKeywordInputFormatStarted1993MoreFlexibleDepartmentofCivilandEnvironmentalEngineeringTheGeorgeWashingtonUniversityEasytoModifyInputDeck4KeywordFormatKeywordformatinputfileListofKeywordoptionsExamplesDepartmentofCivilandEnvironmentalEngineeringTheGeorgeWashingtonUniversityKeywordFormatInputFileSectionsControl,Material,Element,Parts,etc.The“*”followedbykeywordindicatebeginningoftiblkasectionblockThe“$”usedforcommentcardsDatablocksbeginwithkeywordfollowedbydatapertainingtothekeywordMultipleblockswiththesamekeywordareDepartmentofCivilandEnvironmentalEngineeringTheGeorgeWashingtonUniversitypermissibleMaterialandcontacttypesaredefinedbynameKeywordsarealphabeticallyorganizedinmanualKeywordFormatInputFile*KEYWORD*TITLESAMPLEINPUTFILE*CONTROL_TERMINATION*NODE10.000000000E+000.000000000E+000.000000000E+0027.000000000E+000.000000000E+000.000000000E+0030.000000000E+007.000000000E+000.000000000E+000.100000000.000000000.0000000*DATABASE_BINARY_D3PLOT1.00000-30*DATABASE_BINARY_D3THDT1.00000-3*MAT_ELASTIC17.89000-92.00000+50.3000000*SECTION_SOLID10*SECTION_SHELL1247.000000000E+007.000000000E+000.000000000E+0050.000000000E+000.000000000E+007.000000000E+0067.000000000E+000.000000000E+007.000000000E+0070.000000000E+007.000000000E+007.000000000E+0087.000000000E+007.000000000E+007.000000000E+00*ELEMENT_SOLID1112435687*PARTPARTNAME222200000*E