侧门过载开启强度分析规范

Q/SZJ191001-2017侧门过载开启强度分析规范SpecificationOfCheckloadStrengthAnalysisForSidedoor20XX20XX-XX-XX实施20XX-XX-XX发布XXXX汽车工程技术有限公司发布Q/SZXX-X-2017侧门过载开启强度分析规范范围本标准规定了前、后门过载开启强度分析的分析方法，以满足设计车的刚度设计需求。本标准适用于CAE部门前、后门过载开启强度分析。规范性引用文件无。术语和定义本规范涉及到的术语及其定义如下：流程图PROCESSFLOWDIAGRAM基于工程设计子系统数模有限元模型建模基于工程设计子系统数模有限元模型建模仿真计算材料、属性检查连接检查加载边界约束提取结果，对标子系统最终设计方案确定提出优化方案有限元建模仿真计算提取结果，对标子系统最终设计方案确定达标不达标达标图1流程图

AFEAmodelAFEAmodelbuildingbasedontheengineeringdesignsubsystemCalculateMaterial/PropertycheckLinkcheckConstrainsboundarycondition/loadsToextractionresults,forstandardSubsystemdesignschemeestablishedfinallyPutforwardtheoptimizationschemeAFEAmodelbuildingCalculateToextractionresults,forstandardSubsystemdesignschemeestablishedfinallyMeettargetDonotmeettargetMeettargetFigure1ProcessFlowDiagram工具描述TOOLDESCRIPTION仿真分析过程中需要用到的如下软件:Thefollowingsoftwarefacilitatestheanalyticalsimulationprocess:前处理(Preprocessors):Hypermesh求解器(AnalysisCode):Abaqus后处理(Postprocessors):Hyperview建模和分析过程MODELING/ANALYSISPROCEDURE单位Units分析中所用单位制如下所示:Theunitsusedintheanalysisareasfollows:力(Force) N质量(Mass) T长度(Length) mm时间(Time) s应力(Stress) Mpa内容Contents该模型主要包括车门、车身侧围、门槛梁、纵梁、横梁、地板等，如下图：Thismodelmaincontainsswingdoor,bodysides,dash,rock,rail,crossmembers,floor(maybeomittedbaseduponengineeringjudgment),showinthefollowingfigure坐标系CoordinateSystems整车全局坐标系vehicleglobalcoordinatesystem建模技巧ModelingTechniques车身模型平均单元尺寸为8mmx8mm,螺栓连接采用可rigids单元模拟；缝焊采用seam中的penta(mig)单元模拟,直径6mm;点焊采用acm（shellgap）单元模拟，直径6mm.确保车门位于最大开度，并且门铰链能让门绕铰链轴旋转BIWaverageelementsize:8mmx8mm;Bolts:rigidsSeamwelding:penta(mig)inseam,Diameter=6mmSpotwelding:shellgapinacm,Diameter=6mmModelthedoorinfullopenposition.ensurethathingeandchecklink(ifapplicable)pinaxesarereleasedtoallowdoorrotation.假设和限制ASSUMPTIONS/LIMITATIONSN/A假设AssumptionsN/A限制Limitations材料Material材料Nonlinearmaterialpropertiesareassignedtothemodal.约束和边界条件CONSTRAINTS/BOUNDARYCONDITIONS约束：该分析分两种计算模型，一种是在车身上的（onbody），另一种是独立的白车门(onfixed)，下面是两种模型的约束方法。1、Onbody:距离hinge位置前后X向至少300mm处截取车身，边界约束SPC123456；Constrains:includetheregionofBIW300mmaboutthehingeaxisinthefore/aft(+/-X)andcrosscardirections(+/-X);applyboundaryconditions(spc1-6)atthebody-sidehingestrapandchecklinkmountingbracket(ifapplicable)asshown,spc1234562、Onfixed:约束铰链安装孔SPC123456，限位器安装孔约束SPC123456Constrains:fixedpointsonhingeandlimiter,spc123456载荷LOADS两种模型的载荷工况相同载荷：1、设置接触2、加载固定方向（旋转到最大开角后的车门,过锁点与铰链轴平行建立旋转轴，绕轴旋转100）235N3、增力至500N4、卸载Hereisthesameloadconditiontothetwokindsofanalysis.Loads：1、Definecontactsasdescribedintheprocedure.2、Applyaload(Front235N/Rear250N)loadatmaximumdegreeadd10degreetothedooratlatchasshown3、Apply500N4、releaseto0性能要求PERFORMANCEREQUIREMENTSN/A分析要求ANALYSISREQUIREMENTS时间历程节点TimeHistoryNodesN/A输出文件OutputFiles卸载后车门锁点的Z向位移车门内外板剪切位移Rise/sagatlatchusingCheckLoad(CL)Analyzer.Fore/Aftsheardeflection(matchboxing)andshearsetasmeasuredasrelativeresultantdeflectionbetweenouterandinnerpanelsatthemiddleofthedaylightopeningatbeltlineflanges.分析时长AnalysisDurationN/A结果RESULTS目标值：锁点Z向位移≤1.5mm，车门内外板剪切位移≤1mmTarget:deformationatlatchintheZdirection≤1.5mm,outerandinnerpanelsatthemiddleofthedaylightopeningatbeltlineflangesdeformation≤1mm锁点Z向残余位移/RemnantdeformationatlatchintheZdirection车门内外板剪切位移/outerandinnerpanelsatthemiddleofthedaylightopening