Q/SZJ191001-2017車(chē)門(mén)安裝點(diǎn)剛度分析規(guī)范SpecificationofSideDoorInterfaceStiffnessAnalysis20XX20XX-06-30實(shí)施20XX-05-29發(fā)布XXXX汽車(chē)工程技術(shù)有限公司發(fā)布Q/SZXX-X-2017車(chē)門(mén)安裝點(diǎn)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、車(chē)門(mén)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(mén)車(chē)門(mén)安裝點(diǎn)剛度分析規(guī)范。規(guī)范性引用文件無(wú)。術(shù)語(yǔ)和定義無(wú)。摘要Abstract本文描述車(chē)身側(cè)車(chē)門(mén)安裝點(diǎn)的剛度分析規(guī)范。Thisdocumentationdescribesthespecificationofsidedoorinterfacestiffnessonthebodyside.流程圖ProcessFlowDiagram建模建模BuildFEmodel設(shè)置邊界條件Defineconstraints/boundaryconditions設(shè)置加載條件Defineloads計(jì)算SubmittoNastranorOptistruct處理輸出文件Dealwiththeoutputfiletogettheresults結(jié)果是否滿足要求Istheresultsok?白車(chē)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(guò)程中需要用到的如下軟件:Thefollowingsoftwarefacilitatestheanalyticalsimulationprocess:前處理(Preprocessors):Hypermesh求解器(AnalysisCode):Nastran,Optistruct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分析模型為白車(chē)身。Theanalysismodelcontentsthebodyinwhite.坐標(biāo)系CoordinateSystems全局坐標(biāo)系Thestandardglobalcoordinatesystem.建模技巧ModelingTechniques網(wǎng)格質(zhì)量要求，平均單元尺寸3-8mm，翹曲小于12°，雅克比大于0.6，三角形單元數(shù)量小于10%。局部應(yīng)力區(qū)域沒(méi)有三角形單元，關(guān)鍵安裝點(diǎn)周?chē)鷽](méi)有三角形單元。增加一圈washer在螺栓孔上。螺栓用Rbe2+Cbar單元或Rbe2+Rbe2單元模擬。焊縫用Penta焊縫類(lèi)型模擬。Meshqualityrequirements:Averageelementsizeis3to8mm,Warpage<12,Jacobin>0.6，Triangleselementproportion<10%.Notrianglesinlocalstressconcentratedarea.Notriangularelementsaroundkeyfixpoints.Addonewasherattheboltholes.UseRbe2+CbarelementsorRbe2+Rbe2elementstosimulatebolts.UsePenta-typedweldtosimulatewelds.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(méi)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(méi)有螺紋失效。Assumptions:Incomparisonwiththephysicaltest,wherespotweldsmailfailandmaterialmaylocallytear,theanalyticalmodelassumesnoweldsfailureandnomaterialtear.Astothescrewingconnection,theanalyticalmodelassumesnoscrewingfailure.限制ConstraintsN/A.載荷和邊界條件Loads/BoundaryConditions約束和邊界條件Constraints/BoundaryConditions白車(chē)身的縱向中心截面約束1-6，前后門(mén)橫向中心截面約束1-6，如圖2。ThelongitudinalcentricsectionofBIWisconstrained1-6components,andthelateralcentricsectionoffrontandreardoorisconstrained1-6components,asshowninFigure2.Spc1-6Spc1-6圖2約束條件Fig2ConstraintConditions載荷Loads加載點(diǎn)為車(chē)門(mén)安裝鉸鏈的中心點(diǎn)，它與車(chē)身上的鉸鏈安裝點(diǎn)剛性連接。在前后車(chē)門(mén)的四個(gè)安裝鉸鏈的中心點(diǎn)分別作用X,Y,Z三個(gè)方向的單位力，如圖3所示。Theloadingpointslocatethecenterofthehingepivotlocations,whichareconnectedtothemountingpointsofthehingeonthebodysidewiththerigids.ApplyaunitloadintheglobalX,globalYandglobalZatthehingepivotpointsoffrontandreardoor,asshowninFigure3.UnitloadinXYZUnitloadinXYZ圖3載荷Fig3Loads結(jié)果Results結(jié)果格式ResultsFormats輸出各工況加載點(diǎn)對(duì)應(yīng)的X、Y或Z方向的位移，其靜剛度為位移的倒數(shù)。OutputdisplacementsatalltheloadingpointsinX,YandZdirections.Stiffnessisreciprocalofdisplacementateachpointoncorrespondingsubcases.相關(guān)測(cè)試CorrelationTestsN/A性能要求PerformanceRequirements車(chē)身側(cè)車(chē)門(mén)安裝點(diǎn)的剛度要求與項(xiàng)目相關(guān)，應(yīng)參考該項(xiàng)目的《整車(chē)CAE性能目標(biāo)與方案》所設(shè)定的目標(biāo)。Thesidedoorinterfacestiffnessisprogramspecific,whichreferstoprogram《整車(chē)CAE性能目標(biāo)與方案》fortargets.分析要求Analysi