Q/SZJ191001-2017Q/SZC2-405-2015格柵Gload分析規(guī)范SpecificationOfGloadAnalysisForGrill20XX20XX-XX-XX實施20XX-XX-XX發(fā)布XXXX汽車工程技術(shù)有限公司發(fā)布Q/SZXX-X-2017格柵Gload分析規(guī)范范圍本標(biāo)準(zhǔn)規(guī)定了格柵Gload分析的分析方法，確定格柵強(qiáng)度。本標(biāo)準(zhǔn)適用于CAE部門格柵Gload分析。規(guī)范性引用文件無。術(shù)語和定義無。流程圖PROCESSFLOWDIAGRAM建模Model建模ModelMeettarget確定安裝點點FixedPoint約束邊界Boundary設(shè)置參數(shù)計算Setparameter結(jié)束End優(yōu)化Optimization圖1流程圖Figure1ProcessFlowDiagram）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):Nastran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) N質(zhì)量(Mass) Ton長度(Length) mm時間(Time) s內(nèi)容Contents坐標(biāo)系CoordinateSystems建模技巧ModelingTechniques本分析中格柵總成模型包含側(cè)邊和中間支架，約束點位于格柵側(cè)支架和重建支架與車身連接點。如果支架安裝在比較弱的零部件上，該零部件也需要一起分析。Grilleassembly(includingsideandcenterbracket)isusedintheanalysis.Theboundaryconstraintsaredefinedattheattachmentbetweenrigidvehiclebodyandcenterandsidebrackets.However,ifthesebracketsareattachedtosomecomponentswhichcannotbetreatedasrigidbody,thesecomponentsshouldbeincludedintothemodelbeinganalyzed假設(shè)和限制ASSUMPTIONS/LIMITATIONS約束和邊界條件CONSTRAINTS/BOUNDARYCONDITIONS約束格柵系統(tǒng)安裝點，約束1-6DOF。車身和格柵的連接點認(rèn)為是剛性連接。MountinglocationsSPC’d1-6forgrilleassembly.Analyzethegravityloadperformanceofgrille.Useconsistentunits.Theattachmentpointsareassumedtoberigidconnectionsbetweenrigidvehiclebodyandgrilleassembly.It’slefttouserdiscretiontoincludewhatcomponentsintogrilleassemblyotherthangrilleitself.圖2邊界約束Fig2Boundarycondition載荷LOADSX、Y方向分別加載5G,Z向加載10G5GLoadCaseinX;5GLoadCaseinY;10GLoadCaseinZ性能要求PERFORMANCEREQUIREMENTS最大應(yīng)力小于屈服應(yīng)力的90%。Maximumstressforthefollowingloadcasesshouldbelessthan90%oftheallowablestressforthematerial.分析要求ANALYSISREQUIREMENTS無。結(jié)果RESULTS結(jié)果格式ResultsFormatsOP2