Q/SZJ191001-2017車門外拉手剛度分析規(guī)范SpecificationOfOutsideHandleStiffnessAnalysisForSidedoor20XX20XX-09-30實(shí)施20XX-08-28發(fā)布XXXX汽車工程技術(shù)有限公司發(fā)布Q/SZXX-X-2017側(cè)門外拉手剛度分析規(guī)范范圍本標(biāo)準(zhǔn)規(guī)定了側(cè)門外拉手剛度分析方法及結(jié)果處理方法。本標(biāo)準(zhǔn)適用于CAE部門側(cè)門外拉手剛度分析。規(guī)范性引用文件無。術(shù)語和定義無流程圖ProcessFlowDiagram建模建模BuildFEmodel設(shè)置邊界條件DefineLoads/boundaryconditions計(jì)算SubmittoNastranorOptistruct處理輸出文件Dealwiththeoutputfiletogettheresults結(jié)果是否滿足要求Istheresultsok?白車身CAD模型BodyinWhiteCADmodel結(jié)束EndYES優(yōu)化OptimizationNO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分析模型是車門外拉手模型。TheanalysismodelcontentsOutsideHandle坐標(biāo)系CoordinateSystems整車坐標(biāo)系Globalcoordinatesystem建模技巧ModelingTechniques網(wǎng)格質(zhì)量要求，基準(zhǔn)網(wǎng)格尺寸為5mm，最小尺寸為3mm，最大尺寸為8mm，翹曲小于15°，雅克比大于0.6，三角形比例小于5%，螺栓孔需要增加一圈washer，螺栓采用RBE2單元模擬，點(diǎn)焊及鉚接采用ACM(shellgap)類型模擬，鉸鏈轉(zhuǎn)軸采用RBE2+CBAR（放開軸向轉(zhuǎn)動(dòng)）單元模擬。Meshqualityrequirement,.Thetargetsizeis5mm,theminsizeis3mm,themaxsizeis8mm.Warpage<15deg,.Jocobin>0.6.Triangleselement<5%.Addonewasherforboltholes.BoltsuseRBE2elementtosimulate.WeldsandrivetsuseACM(shellgap)typetosimulate.ThehingeaxisesuseRBE2+CBARelementtosimulate.假設(shè)和限制Assumptions/Limitations假設(shè)Assumptions與物理試驗(yàn)相比較，對(duì)于焊點(diǎn)焊縫失效和材料局部撕裂的地方，分析模型假設(shè)沒有焊點(diǎn)焊縫失效和材料撕裂。對(duì)于螺紋連接處，假設(shè)分析模型沒有螺紋失效。Incomparisonwiththephysicaltest,wherespotweldsmailfailandmaterialmaylocallytear,theanalyticalmodelassumesnoweldsfailureandnomaterialtear.Tothescrewingconnection,theanalyticalmodelassumesnoscrewingfailure.限制Limitations無。載荷和邊界條件Loads/BoundaryConditions約束Constraints:約束1-3自由度在安裝點(diǎn)，約束1-3自由度在旋轉(zhuǎn)軸固定點(diǎn)Spc1-3onthehousingfixturepoints,Spc1-3ontherodattachedpoints.圖2約束figure2Constraints加載Loads：加載1Loadingcase1：沿著手指握著手柄的位置加載350N的力。Apply350Nloadatthefingergrippositionalongthehandlepaddlepulingdirection.加載2Loadingcase2：沿著手指握著手柄的位置加載80N的力，靠近扶手固定點(diǎn)旋轉(zhuǎn)軸附近區(qū)域約束1-3SPC。80NloadatthefingergrippositionalongthehandlepaddlepulingdirectionwithSPC1-3inthehandlepaddlestoppointsnearthehandlepaddlepivotarea.圖3加載Fig3Loads結(jié)果Results在手柄和曲柄之間的接觸區(qū)域上的位移，然后根據(jù)曲柄的機(jī)械比將其轉(zhuǎn)換為桿附著點(diǎn)的行程損失；讀取各個(gè)零件的最大應(yīng)力。Deflectiononthecontactareabetweenthehandlepaddleandbellcrank.Thenconvertittothetravellossontherodattachedpointbaseonthemechanicalratioofthebellcrank.Stressoneachcomponentincludinghandlepaddle,housing,bellcrank,andpivots性能要求PerformanceRequirements工況1：行程損失<1mm應(yīng)力<屈服強(qiáng)度工況2：應(yīng)力<0.3×屈服強(qiáng)度Loadcase1:Travello