《轮胎结构设计》PPT课件.pptVIP

FEMApplicationonTireDesign 锦湖轮胎 1 有限要素法介绍2 轮胎结构说明特征3 轮胎结构说明体系4 轮胎结构说明例题5 结论及希望效果 目录 有限要素法 FiniteElementMethod 把像轮胎的结构物分割成有限个结构物 对分割的要素各自创建平衡方程式 把这组合到全体要素 对联力方程式求近似解 变位 应力 变形率 的数值解析方法 有限要素法不是绝对的性能预测 而是以相对VersionRanking工具使用 有限要素法定义 有限要素法定义 EquationofMotionGeometry Mesh Node ElementMaterialProperty Rubber E v Cord E EPI AngleBoundaryCondition BasicElasticity 有限要素法正式化 PotentialEnergy VirtualWork FinalEquation 1 Tread2 Carcass3 Belt4 Sidewall5 Bead6 Innerliner7 Capply8 Flipper9 Apex 轮胎结构说明特征 几何学的非线性 LargeDeformation SmallStrain X LagrangianStrain O 材料的非线形性 MaterialNon Linearity HyperelasticMaterialModel Moony RivlinModel系列 O OgdenModel系列 经济条件的非线形性 Contact Friction Contactcondition Frictioncondition h p Frictionconstraint 0 slip Penaltymethod Contactconstrainth 0 p 0 nopressure h 0 p 0 contactpressure Lagrangemultipliermethod cr CAD CAE体系现况 KADAS是利用超级电脑 在产品设计阶段预测轮胎运行性能 即轮胎性能自动预测系统 KADAS是使用了最短点的数值解析方法 结构解析轮胎耐久力 磨损 牵引力 安全性 乘车感 噪音性能最低化的技术 KADAS为KumhoAutomatedDesignAnalysisSystem的缩略语 是缩短开发时间 减少开发费用 提高产品品质的技术 KADAS定义 KADAS KADAS 1 2 3 TireonlySmoothtireStaticanalysis TireonlyPatterntireSteadyrolling Tire vehiclePatterntireTransientrolling StrainenergyFootprintpressureSpringrateTemperature Force momentFrictionalenergyModalfrequencyHydroplaning Durability RRRide handlingWear TractionNoise vibration CAD CAEseparationCAEprofessionals CAD CAEinterfaceFewengineers CAD CAEintegrationMostengineers 1995 2000 1 Vector 2001 2006 2 SMP 2007 2010 3 Cluster KADAS KADAS 1 TireStaticAnalysis Simulationitem Strainenergy Footprintpressure Springrate Cordtension Dimension Tirestaticanalysismodel Straindistributionaroundtire TireStaticAnalysis 2 TireThermalAnalysis Simulationitem Temperature Rollingresistance Hysterisislossofrubber Temperaturedistributioninsidetire TireThermalAnalysis 3 TireSteadyRollingAnalysis Simulationitem Force moment Strainenergy Footprintpressure Springrate Cordtension Dimension Tirerollinganalysismodel Tiredeformedshape TireSteadyRollingAnalysis 4 TireModalDynamicAnalysis NVH Noise Vibration andHarshness Simulationitem Modeshape Naturalfrequency Frequencyresponse Tiremodeshape 2ndmode Frequencyresponsefunction FRF TireModalDynamicAnalysis 5 PatternTireRollingAnalysis Simulationitem Force moment PRAT PlysteerResidualAligningTorque Frictionalenergy Footprintpressure Patterntire Force moment PRAT prediction PatternTireRollingAnalysis PatternTireAnalysis 6 TreadSlipAnalysis Simulationitem Force moment PRAT Frictionalenergy Footprintpressure Patternonly Treadslipanalysismodel TRESA Frictionalenergydistribution TreadSlipAnalysis 7 TireExplicitDynamicAnalysis NVH Simulationitem Cleatimpact Cornering Standingwave Drytraction Cleatimpactanalysismodel Tireforcevariationduringcleatimpact CleatImpactAnalysis Standingwave Criticalspeed 7 TireExplicitDynamicAnalysis StandingWaveAnalysis CriticalSpeed Axleforce StandingWaveAnalysis ESCOT ESCOT ESCOT Excellent SmartContourOptimizationTheory Escort 8 TireShapeOptimizationAnalysis Final Proto ESCOT 1 Proto Final ESCOT 2 Final Proto ESCOT 3 ESCOT 3 9 TireFractureAnalysis Global Local Simulationitem Fatiguelifeinbeltedge carcassedge Globalanalysis Localanalysis Fatiguelife 10 TireUniformityAnalysis Uniformity Simulationitem Lowspeeduniformity RFV LFV Input Solving Output Tireuniformitysimulationprocedure TireUniformityAnalysis 11 AircraftTireAnalysis Simulationitem Inflation static steadyrollinganalysis Strainenergydistribution Footprintpressuredistribution 12 TireManu