Q/SZJ191001-2017背門急剎剛度分析規(guī)范SpecificationofLiftgatePanicBrakeStiffnessAnalysis20XX20XX-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背門急剎剛度分析規(guī)范范圍本標(biāo)準(zhǔn)規(guī)定了術(shù)語和定義、背門急剎剛度分析方法及結(jié)果處理方法。本標(biāo)準(zhǔn)適用于CAE部門的背門急剎剛度分析。規(guī)范性引用文件無。術(shù)語和定義無。摘要本規(guī)范規(guī)定了后背門急剎剛度分析的流程與要求。Thespecificationprovidesthestiffnessanalysisprocessandrequirementsforliftgatepanicbrake.流程圖組建詳細(xì)模型組建詳細(xì)模型Collectdetailedmodel(s)求解Solve加載Applyconstraintsandloads輸出位移并計(jì)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(shí)間(Time) 秒(Second)內(nèi)容整備門，如圖2所示。FullytrimmedLiftgate.Themodelisshowninfigure2.FullytrimmedLiftgateassembly:Liftgate-In-White,Glass,Hinge,Latch,Lumpedmass.Liftgate-In-Whiteassembly:? Allliftgatestructuralparts? Adhesive? Mastic? Welds? Mechanicalclinches圖2車門有限元模型Fig2DoorFEAModel坐標(biāo)系約束時(shí)用全局坐標(biāo)系，施加載荷時(shí)采用局部坐標(biāo)。Constraintthebodyatglobalcoordinatesystem，applyloadatlocalcoordinatesystem.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(diǎn)123456自由度，約束氣撐桿車身端123自由度，如圖3所示。Constraints1-6dofatthebodysidehinges,constrained123dofatthebodysideofstrut,asshowninfigure3.加載Loads：整個(gè)模型施加-X向3G重力，如圖3所示。Applied3Gloadinforward(-X)direction,asisshowninfigure3.圖3背門約束及加載Fig3LiftgateConstraints&Loads結(jié)果無。性能要求加載點(diǎn)加載方向位移<1.0mm應(yīng)力<屈服應(yīng)力Deflection