Q/SZJ191001-2017背門貼合平整度分析規(guī)范SpecificationofLiftgateFitandflushnessAnalysis20XX20XX-06-30實施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背門貼合平整度分析規(guī)范范圍本標準規(guī)定了術(shù)語和定義、背門貼合平整度分析方法及結(jié)果處理方法。本標準適用于CAE部門的背門貼合平整度分析。規(guī)范性引用文件無。術(shù)語和定義無。摘要本規(guī)范規(guī)定了后背門門把手安裝點剛度分析的流程與要求。ThespecificationprovidesthestiffnessanalysisprocessandrequirementsforliftgateHandleMount.流程圖組建詳細模型組建詳細模型Collectdetailedmodel(s)求解Solve加載Applyconstraintsandloads輸出位移并計算Outputdisplacementandcompute圖1流程圖Fig1ProcessFlowDiagram工具描述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建模和分析過程單位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)時間(Time) 秒(Second)內(nèi)容整備門，鉸鏈，如圖2所示。Fullytrimmedliftgate,HingeAssembly.Themodelisshowninfigure2.Fullytrimmedliftgateassembly:? Allliftgatestructuralparts? Adhesive? Mastic? Welds? Mechanicalclinches? Glasswithattachments? Latch? Anyadditionaldistributed? Lumpedmass圖2車門有限元模型Fig2DoorFEAModel坐標系約束車身處鉸鏈安裝點時用全局坐標系，約束鎖扣中心時采用局部坐標，局部坐標如圖3所示。Constraintthebodyhingemountatglobalcoordinatesystem，Constraintthelatchfishmouthcenteratlocalcoordinatesystem,thelocalcoordinatesystemisshowninfigure3.圖3局部坐標示意圖Fig3LocalCoordinateSystem建模技巧無。假設(shè)和限制本規(guī)范僅用于靜態(tài)線性分析Theprocedureisapplicableonlytostaticlinearanalysis載荷和邊界條件約束Constrains：約束鉸鏈車身端安裝點123456自由度，約束鎖扣中心23自由度。如圖4所示。Constraints1-6dofatthebodysidehingesand23dofatlatchfishmouthcenter,asisshowninfigure4.圖4背門約束和加載Fig4LiftgateConstraints&Loads加載Loads：在內(nèi)板的密封條接觸面上施加垂向力；沿關(guān)閉狀態(tài)下氣撐桿軸向施加預(yù)載力；施加重力；若緩沖塊接觸還需施加緩沖塊接觸力。如圖4所示NominalsealforcenormaltosealcontactsurfaceClosedstrutforceatnominaltemperatureGravityBumperforce(ifinterferencefitatdesignposition).assho