Q/SZJ191001-2017半軸動響應(yīng)分析規(guī)范SpecificationOfDriveShaftResponseAnalysis20XX20XX-12-31實(shí)施20XX-11-27發(fā)布XXXX汽車工程技術(shù)有限公司發(fā)布Q/SZXX-X-2017半軸動響應(yīng)分析規(guī)范范圍本標(biāo)準(zhǔn)規(guī)定了術(shù)語和定義、半軸動響應(yīng)分析方法及結(jié)果處理方法。本標(biāo)準(zhǔn)適用于CAE部門半軸動響應(yīng)分析。規(guī)范性引用文件無。術(shù)語和定義本規(guī)范涉及到的術(shù)語及其定義如下：動響應(yīng)（MFREQ）本分析規(guī)范中動響應(yīng)指模態(tài)頻率響應(yīng)，是基于模態(tài)計(jì)算結(jié)果對特定頻率的動力學(xué)響應(yīng)分析。摘要Abstract為了保證傳動系的性能，半軸的動響應(yīng)是評價(jià)半軸設(shè)計(jì)的必要項(xiàng)之一。根據(jù)半軸實(shí)際的安裝角度，計(jì)算半軸的動態(tài)加速度振動響應(yīng)，使加速度幅值滿足設(shè)計(jì)要求。Inordertosupportthedrivelinefunction,itisnecessarytoevaluatethedriveshaftdynamicresponse,itisimportantthatcomputethedriveshaftvibrationExcitingtheunitforceontheworkinglocationfortheamplitudeofaccelerationmeetingtarget.流程圖ProcessFlowDiagram建模建模網(wǎng)格離散模型確認(rèn)幾何清理硬點(diǎn)位置確認(rèn)網(wǎng)格質(zhì)量檢查實(shí)體網(wǎng)格填充硬點(diǎn)連接萬向節(jié)連接定義材料求解設(shè)置提交計(jì)算計(jì)算結(jié)果分析修改網(wǎng)格圖1流程圖Fig1ProcessFlowDiagram工具描述ToolDescription仿真分析過程中需要用到的如下軟件:Thefollowingsoftwarefacilitatestheanalyticalsimulationprocess:前處理(Preprocessors):Hypermesh求解器(AnalysisCode):MSC.Nastran后處理(Postprocessors):Hyperview建模和分析過程Modeling/AnalysisProcedure為保證有限元模型質(zhì)量，需要對幾何數(shù)模進(jìn)行相應(yīng)的清理，刪除掉不影響計(jì)算的零件如防塵套等，另外需要確認(rèn)萬向節(jié)硬點(diǎn)位置以及半軸前后端花鍵有效連接位置。Therearemanyclearupforsurfaceandsomesimplifiedmodel,suchasU-jointandsplines.單位Units分析中所用單位制如下所示:Theunitsusedintheanalysisareasfollows:力(Force) 牛頓(N)質(zhì)量(Mass) 噸(Ton)長度(Length) 毫米(mm)時(shí)間(Time) 秒(Second)內(nèi)容Contents分析模型包括左右半軸及其萬向節(jié)，如果長半軸有支架，也應(yīng)該包括半軸支架。如下圖2所示:CAEmodelincludedriveshaftsandcrosspin,ifthereisthebracket,itistoo.圖2半軸CAE模型Fig2CAEmodelofdriveshaft坐標(biāo)系CoordinateSystems該分析對坐標(biāo)系沒有特殊要求，為了表達(dá)上的一致性，一般采用整車坐標(biāo)系。Itisn’tspecialrequirementforthecoordinatesystem,butusingthevehiclecoordinatesystem,generally.建模技巧ModelingTechniques為了保證體單元通過求解器檢查，需要保證2D的殼單元質(zhì)量。Checkingshellmeshqualitysupportthesolidmeshquality.假設(shè)和限制Assumptions/Limitations隨著新材料新技術(shù)的發(fā)展，F(xiàn)EM需要對一些結(jié)構(gòu)及材料進(jìn)行假設(shè)，但該假設(shè)不會很大的影響到CAE的分析結(jié)果的可信性。FEMsimplifythestructureandthematerial,itisn’teffecttoCAEresult.假設(shè)Assumptions萬向節(jié)假設(shè)CrosspinAssumptions因?yàn)闆]有萬向節(jié)的真實(shí)模型，需要修正萬向節(jié)內(nèi)部特性，故假設(shè)萬向節(jié)為十字萬向節(jié)，萬向節(jié)內(nèi)部十字絞為剛性。Withoutthecrosspinstructuredetails,assumptionthecrosspinisrigidity.軸承假設(shè)BearingAssumptions假設(shè)軸承是剛性的，故支架軸承和半軸用只有旋轉(zhuǎn)自由度的剛性連接。Assumptionthebearingisrigidityandrigidconnectbetweendriveshaftandbracketexceptwhirlfreedomdegree.材料假設(shè)MaterialAssumptions假設(shè)材料阻尼為模態(tài)阻尼，阻尼比為3%。Assumptionthematerialdampdefinemodaldamp，thedampratiois3%.限制LimitationsN/A載荷和邊界條件Loads/BoundaryConditions約束constraint基于自由模態(tài)的頻響分析，不約束邊界條件。Thisisfree-freebodymodalfrequencyresponseanalysis.加載Loads激勵(lì)力為0-2000Hz的單位激勵(lì)頻率。Theunitforcefrom0Hzto2000Hzisexciting.結(jié)果Results結(jié)果格式ResultsFormats輸出的結(jié)果文件類型為*.OP2或者*.PCH文件。Theresultfiletypeis*.OP2or*.PCHfile.bendingbendingbendingbending圖3半軸加速度響應(yīng)Fig7Acc_ResponseofDriveshaft性能要求PerformanceRequirementsN/A分析要求ANALYSISREQUIREMENTSN/A參考文件DOCUMENTATIONN/A聯(lián)系人CONTACTSN/A例子EXAMPLES$$huiqiang.liNASTRANBUFFSIZE=65537NASTRANSYSTEM(86)=0NASTRANSYSTEM(166)=0NASTRANSYSTEM(151)=1NASTRANSYSTEM(319)=1NASTRANSYSTEM(146)=4NASTRANSYSTEM(195)=120NASTRANSYSTEM(205)=40NASTRANSYSTEM(219)=40NASTRANSYSTEM(220)=1NASTRANSYSTEM(221)=40NASTRANSYSTEM(273)=300ASSIGNDB1='DB01.DAT'ASSIGNDBM='DBM.MASTER'ECHOOFFDOMAINSOLVERACMS(PARTOPT=DOF)$$SOL111TIME10000000CEND$TITLE=FREQUENCYRESPONSESUBTITLE=Sol111ECHO=NoneLABEL=YourName&Date$SEALL=ALLSPC=33METHOD=10$SUBCASE1LABEL=LeftdriveshaftDrivingPointFRFinLongitudinalDirectionSET54=238880(YourResponsePtNode)ACCELERATION(PHASE)=54DLOAD=3084$SDAMPING=92FREQUENCY=30$SUBCASE2LABEL=LeftdriveshaftDrivingPointFRFinlateralDirectionSET54=238880(YourResponsePtNode)ACCELERATION(PHASE)=54DLOAD=3085$SDAMPING=92FREQUENCY=30$SUBCASE3LABEL=LeftdriveshaftDrivingPointFRFinVerticalDirectionSET54=238880(YourResponsePtNode)ACCELERATION(PHASE)=54DLOAD=3086$SDAMPING=92FREQUENCY=30$SUBCASE4LABEL=LeftdriveshaftDrivenPointFRFinLongitudinalDirectionSET55=229019(YourResponsePtNode)ACCELERATION(PHASE)=55DLOAD=3184$SDAMPING=92FREQUENCY=30$SUBCASE5LABEL=LeftdriveshaftDrivenPointFRFinlateralDirectionSET55=229019(YourResponsePtNode)ACCELERATION(PHASE)=55DLOAD=3185$SDAMPING=92FREQUENCY=30$SUBCASE6LABEL=LeftdriveshaftDrivenPointFRFinVerticalDirectionSET55=229019(YourResponsePtNode)ACCELERATION(PHASE)=55DLOAD=3186$SDAMPING=92FREQUENCY=30$SUBCASE7LABEL=MiddledriveshaftDrivingPointFRFinLongitudinalDirectionSET56=59865(YourResponsePtNode)ACCELERATION(PHASE)=56DLOAD=3284$SDAMPING=92FREQUENCY=30$SUBCASE8LABEL=MiddledriveshaftDrivingPointFRFinlateralDirectionSET56=59865(YourResponsePtNode)ACCELERATION(PHASE)=56DLOAD=3285$SDAMPING=92FREQUENCY=30$SUBCASE9LABEL=MiddledriveshaftDrivingPointFRFinVerticalDirectionSET56=59865(YourResponsePtNode)ACCELERATION(PHASE)=56DLOAD=3286$SDAMPING=92FREQUENCY=30$$$OUTPUT(XYPLOT)XYPUNCHACCERESP/238880(T3RM)XYPUNCHACCERESP/238880(T2RM)XYPUNCHACCERESP/238880(T1RM)$XYPUNCHACCERESP/229019(T3RM)XYPUNCHACCERESP/229019(T2RM)XYPUNCHACCERESP/229019(T1RM)$XYPUNCHACCERESP/59865(T3RM)XYPUNCHACCERESP/59865(T2RM)XYPUNCHACCERESP/59865(T1RM)$$BEGINBULKPARAM,AUTOSPC,YES$TURNONAUTOSPC(DEFAULT=YES)PARAM,GRDPNT,0$GRIDPOINTWEIGHTGRNERATORWRTBASICCOORDINATEPARAM,WTMASS,1.0PARAM,DBALL,SCRATCHPARAM,DDRMM,-1PARAM,POST,-1$$2345678910DLOAD30841.01.01084DLOAD30851.01.01085DLOAD30861.01.01086RLOAD110842084 120RLOAD110852085 120RLOAD110862086120$DLOAD31841.01.01184DLOAD31851.01.01185DLOAD31861.01.01186RLOAD111842184 120RLOAD111852185 120RLOAD111862186120$DLOAD32841.01.01284DLOAD32851.01.01285DLOAD32861.01.01286RLOAD112842284 120RLOAD112852285 120RLOAD112862286120$$$DA