Q/SZJ191001-2017后輪罩(車身狀態(tài))剛度分析規(guī)范SpecificationofRearWheelhouse(InVehicle)StaticLoadAnalysis20XX20XX-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后輪罩(車身狀態(tài))剛度分析規(guī)范范圍本標(biāo)準(zhǔn)規(guī)定了術(shù)語(yǔ)和定義、后輪罩(車身狀態(tài))剛度分析方法及結(jié)果處理方法。本標(biāo)準(zhǔn)適用于CAE部門后輪罩(車身狀態(tài))剛度分析。規(guī)范性引用文件無(wú)。術(shù)語(yǔ)和定義無(wú)。摘要Abstract本規(guī)范規(guī)定了后輪罩剛度分析的流程與要求。Thespecificationprovidesthemodelanalysisprocessandrequirementsforrearwheelhouse(invehicle)staticload.流程圖ProcessFlowDiagram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后輪罩，截?cái)嘬嚿?，如圖2所示。RearWheelhouse,PartialBody.Themodelisshowninfigure2.圖2后輪罩有限元模型Fig2RearWheelhouseFEAModel坐標(biāo)系CoordinateSystems整車坐標(biāo)系Globalcoordinatesystem建模技巧ModelingTechniques無(wú)。假設(shè)和限制Assumptions/Limitations本規(guī)范僅用于靜態(tài)線性分析Theprocedureisapplicableonlytostaticlinearanalysis載荷和邊界條件Loads/BoundaryConditions約束Constrains：約束車身截?cái)嗵?23自由度。如圖3所示。Constraints1-3dofatthenodeswherethebodymodeliscut,asisshowninfigure3.圖3后輪罩約束Fig3RearWheelhouseConstraints加載Loads：在后輪罩角點(diǎn)處施加均布?jí)?0N。如圖4所示。Loadof20Nwasappliedasapressureloadonanelementareawhichisattheleaststiffcorneronthewheelhouse,asisshowninfigure4.圖4加載Fig4Loads結(jié)果Results無(wú)。性能要求PerformanceRequirements剛度>20N/mmStiffness