背门急刹刚度分析规范

Q/SZJ191001-2017背门急刹刚度分析规范SpecificationofLiftgatePanicBrakeStiffnessAnalysis20XX20XX-06-30实施20XX-05-29发布XXXX汽车工程技术有限公司发布Q/SZXX-X-2017背门急刹刚度分析规范范围本标准规定了术语和定义、背门急刹刚度分析方法及结果处理方法。本标准适用于CAE部门的背门急刹刚度分析。规范性引用文件无。术语和定义无。摘要本规范规定了后背门急刹刚度分析的流程与要求。Thespecificationprovidesthestiffnessanalysisprocessandrequirementsforliftgatepanicbrake.流程图组建详细模型组建详细模型Collectdetailedmodel(s)求解Solve加载Applyconstraintsandloads输出位移并计算Outputdisplacementandcompute图1流程图Fig1ProcessFlowDiagram工具描述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):MSC.Nastran后处理(Postprocessors):Hyperview建模和分析过程单位分析中所用单位制如下所示:Theunitsusedintheanalysisareasfollows:力(Force) 牛顿(N)质量(Mass) 吨(Ton)长度(Length) 毫米(mm)时间(Time) 秒(Second)内容整备门，如图2所示。FullytrimmedLiftgate.Themodelisshowninfigure2.FullytrimmedLiftgateassembly:Liftgate-In-White,Glass,Hinge,Latch,Lumpedmass.Liftgate-In-Whiteassembly:• Allliftgatestructuralparts• Adhesive• Mastic• Welds• Mechanicalclinches图2车门有限元模型Fig2DoorFEAModel坐标系约束时用全局坐标系，施加载荷时采用局部坐标。Constraintthebodyatglobalcoordinatesystem，applyloadatlocalcoordinatesystem.建模技巧无。假设和限制本规范仅用于静态线性分析Theprocedureisapplicableonlytostaticlinearanalysis载荷和边界条件约束Constrains：约束铰链车身端安装点123456自由度，约束气撑杆车身端123自由度，如图3所示。Constraints1-6dofatthebodysidehinges,constrained123dofatthebodysideofstrut,asshowninfigure3.加载Loads：整个模型施加-X向3G重力，如图3所示。Applied3Gloadinforward(-X)direction,asisshowninfigure3.图3背门约束及加载Fig3LiftgateConstraints&Loads结果无。性能要求加载点加载方向位移<1.0mm应力<屈服应力Deflection