Q/SZJ191001-2017側(cè)門外把手安裝點(diǎn)剛度分析規(guī)范SpecificationOfDoorOuterHandleAttachmentStiffnessAnalysis20XX20XX-06-30實(shí)施20XX-05-29發(fā)布XXXX汽車工程技術(shù)有限公司發(fā)布Q/SZXX-X-2017側(cè)門外把手安裝點(diǎn)剛度分析規(guī)范范圍本標(biāo)準(zhǔn)規(guī)定了側(cè)門外把手安裝點(diǎn)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)門外把手安裝點(diǎn)剛度分析。規(guī)范性引用文件無(wú)。術(shù)語(yǔ)和定義無(wú)流程圖ProcessFlowDiagramYesYesNo側(cè)門CAD模型DoorCADModel側(cè)門FEA模型DoorFEAModel靜力分析StaticAnalysis結(jié)果是否滿足要求？TheresultisOK？結(jié)束End優(yōu)化Optimization圖1流程圖Fig1ProcessFlowDiagram工具描述ToolDescription仿真分析過(guò)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(guò)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(zhǎng)度(Length) 毫米(mm)時(shí)間(Time) 秒(Second)內(nèi)容Contents白門，包括鉸鏈，不包含玻璃，內(nèi)飾，如圖2所示。白門總成：門內(nèi)板門外板防撞梁腰線加強(qiáng)板框架加強(qiáng)板局部加強(qiáng)板鉸鏈鉸鏈加強(qiáng)板鎖扣加強(qiáng)板焊點(diǎn)粘膠Doorinwhite(DIW)withhingeassembly,noglassandtrim.Themodelisshowninfigure2.Door-in-whiteassembly:DoorinnerDoorouterDoorbeamBeltlinereinforcementsFramereinforcementsLocalreinforcements(ifany)HingereinforcementsHingeassemblyLatchreinforcementSpotweld(s)orfastener(s)Adhesive/gumdrop(s).圖2側(cè)門有限元模型Figure2SidedoorFEAModel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(wú)。載荷和邊界條件Loads/BoundaryConditions前側(cè)門FrontDoor約束Constraints:如圖示位置約束1-6自由度。如圖3所示。Constraints1-6dofatthelocationasshowninfigure3.圖3前側(cè)門約束figure3FrontDoorConstraints加載Loads：在鉸鏈軸中心及鎖扣安裝點(diǎn)位置X、Y、Z各加載90N，如圖4所示。Apply90NalongX,Y,ZdirectionatthecenterofhingeaxisandlatchMountalongX,Y,Zdirection,asshowninfigure4.圖4前側(cè)門加載Fig4LoadsofFrontDoor結(jié)果Results結(jié)果讀取加載點(diǎn)沿加載方向的位移，計(jì)算剛度值。Determinethedeflectionatloadingpointsalongtheloadingdirection.Calculatethestiffness.計(jì)算公式Computation：K式中：d——加載點(diǎn)沿加載方向外側(cè)板上的點(diǎn)的位移。Thethedeflectionatloadingpoin