空心軸的模態(tài)分析

空心軸模態(tài)分析建模首先在Pro/e軟件中建立空心軸的三維模型，如圖1-1所示:圖1-1空心軸三維模型我們建立的空心軸模型尺寸，內(nèi)徑10mm，外徑20mm，拉伸長度50mm，具體設(shè)置如圖1-2所示：田專迭取T茸繪『囪果首選內(nèi)部快，可在通面板中找到"嗣"送虱）◎宜可"E%1匚放置送頂屬性

所示。設(shè)置保存文件格式為igs格式，以便于文件的導(dǎo)入到Ansysworkbench中，如圖1-33H￡3*匚】?MvLk0r3(H：FMM.*?(C:)?l'3?s>,AjMulJurBitcer卜：加jm?h?r-ZV-?-FX-■：■：".._LT]■：：?親.-???.拭所示。LT]■：：?親.-???.拭亡|3KI]eFile:口況纏x二1岫：己駐關(guān)史r：f14T^dJrfiaUTElrjla-^n.：：-Ss^rit￡1)1MHDEE13lcwJjl^IUEZjHr腿麟HrPicture_JlfrVidiusQi：;alhnks￡]3?PTjdK二we外*□.誦：MTuHaVeruaLSuidiaCl-￡i-i3'tiksC-^_j^E□二5皿rjie:Qi^rtMl寫站亡2K5二1吒郵白%5ku.jiZVidUE^lLUst□郡拱花EmilforJpjlLuiLCini:口潮彳_J部頃林胃fliaai?I'I點(diǎn)箜|1>1E2Mg|程.瞬圖1-3模型保存選擇分析模塊，雙擊把建立好的三維模型導(dǎo)入到Ansysworkbench中的Modal模塊下的Geomerty中Modal模塊，如圖2-1所示：，雙擊/\Ilnsaved^rojec?-\'\'or<b?ichFileViewToolsUnitsExtensionsHelpProjectJjImport...|Reconnect團(tuán)RefreshProject}UpdateProjectToolboxProjectSchematicToolbox回FluidFlowfPolyflow)回HarmonicResponse倒回FluidFlowfPolyflow)回HarmonicResponse倒HydrodynamicDiffraction闋HydrodynamicTlmeResponseWICEngine倒Line■日「Budding倒LinearBuckling[Samcef)OMagnetostatic|而M訕I(yè)|Modal(Samcef)RandomVibrationResponseSpectrumRigidDynamicsStaticStructuralStaticStructural(Samcef)雙擊此模塊▼A1叩Modal2■EngineeringData/」3aGeometry甘j4孝Model督j(luò)5賣Setup曾j6Solution曾j■?Results督j(luò)Modal右鍵Geometry中的ImportGeometry單擊Browse，找到保存的igs格式的文件打開，如圖2-2、2-3所示。MeGBDEEtFV[nnportGecmetnDupJcate：Tr"電C^ita斤頃Me卉TransferCetatoneviUpdateRefreshprcpern?QjtkhfetJAddNat?SdutianRhuIIsBtp.sse...apt.x_tBreesefromRqxsriEry...圖2-2模型導(dǎo)入圖2-3選擇模型類型此時Geometry由—變成，說明模型已經(jīng)成功導(dǎo)入，雙擊打開查看，點(diǎn)擊"Generate生成模型，如圖2-4、2-5所示。圖2-5模型生成設(shè)置材料屬性首先我們雙擊進(jìn)入材料庫，在材料庫中選擇EngineeringDataSources材料里的GeberalMaterials下的AluminumAlloy鋁合金，如圖3-1、3-2、3-3所示。4翁Model國Setup4翁Model國SetupUn-savedProject-WorkbenchFileEditViewToolsUnitsExtensionsHelp<],JSolution

ij)Results]Ni逑F-'Oijert—A2:EngineeringDataX[VFilterEngineeringDataEngineeringDataSources圖<],JSolution

ij)ResultsIEngineeringDataSources▼中XABcD■*1DataSource夕LocationDescriptionUU1OLJIL1LC1rra3■GeneralMaterialsoGeneraluse.materialsamplesforuseinvariousanalyses.4/.|GeneralNcn^inearMaterialsn.哽GeneraluserratErialsamplesforuseinncnI-1T

圖3-3選擇鋁合金材料添加成功后，我們回到主模塊并更新Model,雙擊打開，選擇Geometry下的MSBR（自己設(shè)置的名稱），在Material下的Assignment中選擇AluminumAlloy,完成材料屬性的設(shè)置，如圖3-4、3-5、3-6、3-7所示。▼A1Modal2領(lǐng)EngineeringData,」3魄｝Geametry/」4■Model房j5?Setup嘈6礴Solution嘈j7成Results督j(luò)Modal圖3-4更新模型GeometrPre-Stress(NaneJAnalysisSettings里]SolutionfAG}??-…-：4T|SolutionInfornftatianGraphicsPr&pertlesDefinitianSuppressedNdStiffnessBehaviorFlexibleCDordinateS-yrtemDetaulttoordinateSyrtem.ReferenceTemperaiureByEnvironmenaMdtcridlAssignment<jtructurdsteel》NonlinearEffectsYes-—ThermalStrainEff^ds￥esBoundIngBoxPropertiesKtafeistncs+王圖3-6選擇需賦材料的實(shí)體GraphicsPreptrti?DeFinitiefiSuppressedNoStrftnrae^ha^orFhtMbleCcordmateSy盤mDefflultCcordmateSysemRjrftmccTemperaiurtByEnvirDnmentMoteridl用siginmentStructuralit?l:xNonlinearEffects￥hThermalSIrmnEffectsYhBoundinrgBexPropertiesStatistics電EditStructuralSteel...“AluEinumAlloy'峰!NetaiMateTial..?施Import...圖3-7選擇實(shí)體材料類型4.劃分網(wǎng)格選擇Mesh右鍵選擇GenerateMesh,讓系統(tǒng)自動生成網(wǎng)格，因?yàn)槲覀兘⒌哪Ｐ捅容^規(guī)則所以網(wǎng)格劃分方式采用系統(tǒng)自動劃分即可，不需要進(jìn)行特殊設(shè)置，如圖4-1、4-2所示。Filter:Name■ifl|Project白劍Model(A4}日”GeometryIi…#?M5BRS-■■v^LcoordinatESystemsEl-Lfp-d-alCA5}-??…,骨Pre-Stress(None)1-??…y/71AnalysisS已ttings□-魚|So-lutiQiiCA&)'-.^T?|SolutionInfbrmatianModel[A41Lnse-t鼬Rename(F2)StartRjEicDrdingRe函anteShowLre-ace-PinchCnnlrols圖4-2劃分網(wǎng)格后我們可以查看網(wǎng)格劃分后的網(wǎng)格質(zhì)量程度，在ElementQuality中的Average為0.8大于0.5說明網(wǎng)格質(zhì)量較好，如圖4-3所示。EfcatistiesN-odes^1046El-em-ents756MeshMetricElementQualityMin.634254241512906Man,^S9G069^S232&7Average.&17392720&622^7StandardE>eviafon&33351O9&M3643E-0i2圖4-3網(wǎng)格質(zhì)量定義邊界條件定義約束的邊界條件，若無約束則分析得出的是零件的自由狀態(tài)下的剛體模態(tài)，前6階模態(tài)值應(yīng)基本為0，此處我們定義約束的類型為固定約束，位置在空心軸的右端面，圖5-1、5-2所示。^Suppcrts?Conditiofls.■電礦以Displacemert晚Remote^Suppcrts?Conditiofls.■電礦以Displacemert晚RemoteDispljscement,Velncriy[mpedancEBoundairy噸frictionleisSupport包Comprt55-ianOnlySupport電CylindricalSupport吃5impJySupported嚓FixedRotation，EljisticS-uppo-rtFuadSupportDerailsofSupport"scopeScopingMethod空叩廿叩m沖I?GeometryDcfiriitionTypeguppreseedFixedSupportCancelA：ModalFi^edSupportFrequency1；2D15/L1/2316rfL圖5-2A：ModalFi^edSupportFrequency1；2D15/L1/2316rfL圖5-2施加邊界條件在Modal模塊下設(shè)置Analysissetting中的MaxModestoFind設(shè)置需要分析的模態(tài)階數(shù)，一般我們設(shè)置模態(tài)階數(shù)為6階即可。并設(shè)置求解器類型為Iterative迭代求解，節(jié)省計算時間，如圖6-1、6-2所示。:HlProject白?.魚|Medel(A4}白"Geom&try-??…*宇如圖6-1、6-2所示。:HlProject白?.魚|Medel(A4}白"Geom&try-??…*宇MSBR國"CaardiratESystems??????Mesh白?-處]Modal55}Pre-Stress(Tlone)AnalysisSettings-OptionsMaxModestoFind6J設(shè)置模態(tài)階數(shù)LimitSearchtoRangeNo-SolverControlsDampedNdSalverTypeProgramControlled+Rotord/naimicsControls+OutputControls+ArtalysisDataiManagementOptionsMaxMtoFind6LimitSearchtoRangeNoSolverControlsDampedNo&￡ilverType《Ueratrve'^HotordynanniesC&M圖6-1設(shè)置模態(tài)階數(shù)--圖6-2設(shè)置求解器類型_^i]Solution(A6J??-…SaluticinInformation選擇Solution右鍵solve求解，出現(xiàn)求解進(jìn)度條，我們可以查看Solutioninformation中的Worksheet工作表里會顯示求解進(jìn)程，當(dāng)我們看到出現(xiàn)求解頻率時，證明求解成功，如圖6-1、6-2、6-3所示。|■im<jii■ru■；Q|Project白|■im<jii■ru■；Q|Project白-....|劍M?lel(A4)□?-…Geometry=?……#??MSBRCoordinateSystems??…■颼IMesh白…成］Modal(A5)Pre-StressljMone)lAnalysisSettingsFixedSuDDort旬Proj&ct白一堂|Node-1(A4)白...吟Geometry」?區(qū)而M5ERH-vA-CoordraiTSystems?、幽MeshB-Q3r^QdaltASj卜W玲Pre-51iestf^orie)AnatyasSettngs/包=.半4巨?嚀上..ii…畝［_

：.：jJ：ASalulTnstrtWk/-|CeaLTGene^ifftedDarta憎止由知lutioil闞垂(F7J□Addif>-tlv￡MeshRefirrtt褊志布面訐溢JOpen心FilsDirectory圖6-2求解過程*****FRE1QUE1ICIESFRC-MPCGLANCZOSI7ERAH0N*****IMCQEFREQUENCY(HERTZ)5?23.4612143205^24.7Q89Seiia15^51.4322984723093.145237552309^.937314212540fi.73^63215圖6-3模態(tài)頻率在圖表上單擊右鍵選擇selectall,此時選擇了所有的振型再次單擊右鍵選擇CreateModeShapeResults,在結(jié)構(gòu)樹里會出現(xiàn)帶有既1的結(jié)果，此時需要我們對結(jié)果再次求解，選擇選擇Solution右鍵EvaluateAllResults，則顯示6階模態(tài)的振型圖，如圖6-4、6-5、6-6、6-7、6-8、6-9、6-10、6-11、6-12、6-13所示。圖6-4選擇所有模態(tài)頻率i1ijSelectAll(CtritA)111foomToRangeA.7335圖6-5創(chuàng)建模態(tài)振型AnalysisSettingsFixedSupporttkin[AC)SolutionInformdtionTotalDefiarmationTotalDefiarmation2TotalDefiarmation3TotalDefiarmation4TotalDefiarmation5TotalDelnornristion6Rename(F2)qOpcrSolverFil?Dirri±or>Q?VJorksbeet：Hesu!Sumn^ryFiKerNameLU『求Gaordn^te^vgtEns白邏出ModalCAS}j…/司Pre-51ieso"V#5rtiiigsFKBdSurqort圖6-6求解模態(tài)振型結(jié)果Mesh

由m足]Modal[AS}Pre-Stress(NaneJAnalyEisSettingsFixedSupport]...../卓|￡<^111七ian(A6}:……§|SolutionInformationTotalDefarmationTatalDeformation2TatalDeformati