ANSYS工程分析学习课件.pptx

Chapter4ANSYS結構分析的基本觀念BasicConceptsforANSYSStructuralAnalysis

Contents4.1學科領域與元素類別 DisciplinesandElementTypes4.2分析類別 AnalysisTypes4.3線性分析與非線性分析 LinearAnalysisandNonlinearAnalysis4.4材料模式 MaterialModels4.5材料的破壞準則 FailureCriteriaofMaterials4.6實例:動態分析 Example:DynamicAnalysis4.7實例:非線性分析 Example:NonlinearAnalysis4.8練習題:幾何非線性 Exercise:GeometricNonlinearity2

第4.1節學科領域與元素類別DisciplinesandElementTypes3

4.1.1學科領域結構分析 StructuralAnalysis熱傳分析 ThermalAnalysis流場分析 FluidDynamicAnalysis電場分析 ElectricFieldAnalysis磁場分析 MagneticFieldAnalysis耦合場分析 Coupled-fieldAnalysis4

4.1.2耦合場分析Example1:ThermalStressAnalysisExample2:Structure-FluidInteractionsExample3:ThermalActuator5

4.1.3元素類別

ElementTypesANSYSelementsareclassifiedaccordingtoDisciplineDimensionalityGeometryOrderExampleSOLID45:3DhexahedrallinearstructuralelementPLANE67:2Dquadralaterallinearcoupledthermal-electricelement6

第4.2節分析類別AnalysisTypes7

4.2.1分析類別

AnalysisTypesStaticAnalysisDynamicAnalysisTransientAnalysisModalAnalysisHarmonicResponseAnalysisetc.BucklingAnalysisStructuralAnalysisStatic,Transient,Modal,Harmonic,Buckling,etc.ThermalAnalysisSteady-state,TransientElectricFieldAnalysisStatic,Transient,Modal,Harmonicetc.8

4.2.2暫態分析

TransientAnalysisInertiaforcesDampingforcesElasticforcesExternalforces9

4.2.3靜態分析

StaticAnalysisWhendynamiceffectscanbeneglected,aproblemcanbesolvedstatically.Dynamiceffectscanbeneglectedonlywhenthedeformationvelocityandaccelerationaresmall.Twocases:Steady-statesolutionapproximationsolutionforareal-worldproblem.10

4.2.4模態分析

ModalAnalysisModalanalysisistoanalysisastructureunderfreevibration.ThesolutionstypicallyincludeVibrationfrequencies(orperiods)Vibrationmodes11

4.2.5諧和反應分析

HarmonicResponseAnalysisHarmonicresponseanalysisistoanalysisastructureunderperiodicexcitationofexternalforces.Thesolutionstypicallyincludemaximum