Q/SZJ191001-2017外覆蓋件抗凹分析規(guī)范SpecificationofCoveringPartsOilCanningAnalysis20XX20XX-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外覆蓋件抗凹規(guī)范范圍本標(biāo)準(zhǔn)規(guī)定了術(shù)語和定義、外覆蓋件抗凹分析方法及結(jié)果處理方法。本標(biāo)準(zhǔn)適用于CAE部門外覆蓋件抗凹分析。規(guī)范性引用文件無。術(shù)語和定義無。摘要Abstract本文描述外覆蓋件表面抗凹的分析規(guī)范。ThisdocumentationdescribesspecificationofcoveringpartsoilcanningAnalysis.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計算SubmittoAbaqus處理輸出文件Dealwiththeoutputfiletogettheresults結(jié)果是否滿足要求Istheresultsok?覆蓋件CAD模型CoveringCADmodel結(jié)束EndYES優(yōu)化OptimizationNO圖1流程圖Fig1ProcessFlowDiagram工具描述ToolDescription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):Abaqus后處理(Postprocessors):Hyperview建模和分析過程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)長度(Length) 毫米(mm)時間(Time) 秒(Second)內(nèi)容Contents外覆蓋件包括：閉合件、翼子板、側(cè)圍和頂蓋。Coveringinclude:closure,fender,sidebodyandroof.坐標(biāo)系CoordinateSystems局部坐標(biāo)系，坐標(biāo)原點位于解析剛體加載面中心點，+Z向垂直于外覆蓋件表面向外，X和Y向由右手法則確定。Localcoordinatesystem,theoriginlocatedontheloadingpointoftheanalyticalrigidbody,+Zisverticaltothecoveringsurfaceandleadtothenormaldirection,XandYisdefinedbyrighthandrule.建模技巧ModelingTechniques網(wǎng)格質(zhì)量要求，平均單元尺寸10mm，翹曲小于12°，雅克比大于0.6，三角形單元數(shù)量小于10%。Meshqualityrequirements:Averageelementsizeis3to8mm,Warpage<12,Jacobin>0.6，Triangleselementproportion<10%.在外覆蓋件的加載區(qū)域，對70mm*70mm范圍內(nèi)的網(wǎng)格進行細化，細化的平均尺寸為5mm。At70mm*70mmcoveringloadingarea,theelementsshouldberefinedby5mmsize.在覆蓋件的外表面施加0.001MPa的壓力，將最大的位移點將其作為加載點。對覆蓋件進行模態(tài)分析，觀察位移云圖并將最大位移點作為加載點。Appling0.001MPapressureoncoveringoutsidesurface,identifythemaximumdisplacementnodeasloadpoint.Runningcoveringcomponentsmodalanalysis,reviewthedisplacementcontourandidentifymaximumdisplacementnodeasloadingpoint.假設(shè)和限制Assumptions/Limitations假設(shè)Assumptions材料的性能是在室溫下測定的。Materialperformanceistestedatroomtemperature限制Limitations無。載荷和邊界條件Loads/BoundaryConditions邊界條件BoundaryConditions閉合件Closures約束閉合件鉸鏈安裝孔的123456自由度，約束鎖安裝孔處的123456自由度。在局部坐標(biāo)系下約束解析剛體（直徑12mm）參考點的12456自由度。Closurecomponentshingemountinghole123456DOFandlatchmountinghole123456DOFshouldbeconstrained.The12456DOFofanalyticalrigidbody(12mmdiameter)referencepointshouldbeconstrainedinlocalcoordinatesystem.翼子板Fender約束翼子板安裝孔的123456自由度。在局部坐標(biāo)系下約束解析剛體（直徑12mm）參考點的12456自由度。Fendermountinghole123456DOFshouldbeconstrained.The12456DOFofanalyticalrigidbody(12mmdiameter)referencepointshouldbeconstrainedinlocalcoordinatesystem.側(cè)圍Sidebody按照圖2方式截取白車身側(cè)圍模型，沿后輪罩向車頭方向取350mm，沿Y=0截面截取。約束截取截面節(jié)點的123456自由度和局部坐標(biāo)系下解析剛體參考點的12456自由度。Accordingtofigure2,cut350mmBIWmodelatrearwheelhousealongY=0plane.The123456DOFofthecuttingsectionand12456DOFofanalyticalrigidbody(12mmdiameter)referencepointinlocalcoordinatesystemshouldbeconstrained.圖2側(cè)圍截取方式Fig2Sidebodycuttingmethod頂蓋Roof按照圖3所示截取整個頂蓋外板模型。約束截取截面節(jié)點的123456自由度。約束局部坐標(biāo)系下解析剛體參考點的12456自由度。Accordingtofigure3,cutwholeroofmodelfromBIWmodelalongZaxle.The123456DOFofthecuttingsectionand12456DOFofanalyticalrigidbody(120mmdiameter)referencepointinlocalcoordinatesystemshouldbeconstrained.圖3頂蓋截取方式Fig2Roofcuttingmethod載荷Loads前后門，行李廂蓋，翼子板，側(cè)圍Doors,decklid,fender,sidebody在局部坐標(biāo)系下，在解析剛體參考點沿-Z方向施加40N作用力。Inlocalcoordinatesystem,apply40Nforceatreferencepointofanalyticrigidpartalong-Zdirection.發(fā)動機罩，頂蓋Hood,Roof在局部坐標(biāo)系下，在解析剛體參考點沿-Z方向施加100N作用力。Inlocalcoordinatesystem,apply100Nforceatreferencepointofanalyticrigidpartalong-Zdirection.性能要求PerformanceRequirements車門，行李廂蓋，翼子板和側(cè)圍外板的最大位移≤1mm。Themaximumdisplacementofdoors,