轮胎结构设计

KumhoR&DCenterStructuralDesignAnalysisTeamFEMApplicationonTireDesign锦湖轮胎KumhoR&DCenterStructuralDesignAnalysisTeam1.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KumhoR&DCenterStructuralDesignAnalysisTeam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KumhoR&DCenterStructuralDesignAnalysisTeam有限要素法定义•EquationofMotion•Geometry(Mesh)-.Node-.Element•MaterialProperty-.Rubber:E,v-.Cord:E,EPI,Angle•BoundaryCondition-.경계조건-.하중조건}{}{][..00xbTDivKumhoR&DCenterStructuralDesignAnalysisTeam0lllΔ:위변llε:변형율AFσ:력응FlF),,(3210dddxxu)(312312332211,σ,σ,σ,σ,σσAFσ),,,,,(312312332211xuεddBasicElasticityKumhoR&DCenterStructuralDesignAnalysisTeam有限要素法正式化}]{[}{D}]{[}{uFuK}{VSTTdSpudVσεΠ}{}{}{}{21VSTTdSpudVσDεΠ}{}{}]{[}{210ΠVSTTdSpNudVBDB}{][}{]][[][•PotentialEnergy:•VirtualWork:}]{[}{iuNu]][[][NB•FinalEquation:KumhoR&DCenterStructuralDesignAnalysisTeam1.Tread2.Carcass3.Belt4.Sidewall5.Bead6.Innerliner7.Capply8.Flipper9.ApexComplicatedtiregeometryPerformancesimulationsystem(KADAS)Powerfulcomputingsystem(HPSuperdome)Complexnonlinearfeatures轮胎结构说明特征KumhoR&DCenterStructuralDesignAnalysisTeam几何学的非线性-LargeDeformation)(21ijjiijxuxuSmallStrain(X)LagrangianStrain(O))(21jikkijjiLijXXuuXuXuKumhoR&DCenterStructuralDesignAnalysisTeam材料的非线形性-MaterialNon-LinearityHyperelasticMaterialModel)(strainfW),(32,1IIIfW),,(321fWMoony-RivlinModel系列(O)OgdenModel系列22011101133)J(D)I(C)I(CWKumhoR&DCenterStructuralDesignAnalysisTeam经济条件的非线形性-Contact&FrictionContactconditionFrictionconditionhp•Frictionconstraintcr=0(stick)=cr0(slip)•Penaltymethod•Contactconstrainth0p=0(nopressure)h=0p0(contactpressure)•LagrangemultipliermethodcrKumhoR&DCenterStructuralDesignAnalysisTeam区域S/WH/W用途结构设计CATIAV4(2)IBMRS/6000•轮胎设计图形处理•Mold制作图形处理CATIAV5(19)IBMZ-ProCADOT(In-house)IBMZ-Pro•统一CAD结构设计体系结构说明ABAQUSV6(15)HPSuperdome•结构说明FEMSolverIDEASV10(6)HPB2600•结构说明Pre/PostProcessingKADAS(In-house)HPL3000•统一FEM结构说明体系流体说明MSC.Dytran(1)HPSuperdome•结构+流体说明FVMSolver流动说明Polyflow(2)HPSuperdome•橡胶流动说明FEMSolver东力学说明MSC.ADAMS(1)IBMM-Pro•动力学说明Solver噪音说明SYSNOISE(1)HPB2600•噪音说明BEMSolverKUPAS(In-house)ISMZ-Pro•统一花纹性能预测体系CAD/CAE体系现况KumhoR&DCenterStructuralDesignAnalysisTeam•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KumhoR&DCenterStructuralDesignAnalysisTeam개발기간단축제품품질향상타이어개발결정시제품제조평가패턴/Mold/구조설계양산판매설계사양타이어개발결정시제품제조성능검증패턴/Mold/구조설계성능Simulation양산판매설계사양KADASKADAS적용개념도KumhoR&DCenterStructuralDesignAnalysisTeamKADAS적용개념도Wear&TractionSimulationNoise&VibrationSimulationDurability&RRSimulationRide&HandlingSimulationDesignOptimizationKumhoR&DCenterStructuralDesignAnalysisTeam제1세대제2세대제3세대TireonlySmoothtireStaticanalysisTireonlyPatterntireSteadyrollingTire+vehiclePatterntireTransientrollingStrainenergyFootprintpressureSpringrateTemperatureForce&momentFrictionalenergyModalfrequencyHydroplaningDurability&RRRide&handlingWear&TractionNoise&vibrationCAD/CAEseparationCAEprofessionalsCAD/CAEinterfaceFewengineersCAD/CAEintegrationMostengineers세대해석방법해석결과사용자2019~2000(과거)슈퍼컴1호기(Vector)2019~2019(현재)슈퍼컴2호기(SMP)2019~2019(미래)슈퍼컴3호기(Cluster)해석환경KADAS시스템발전KumhoR&DCenterStructuralDesignAnalysisTeamKADAS시스템구성KumhoAutomatedDesignAnalysisSystem(KADAS)1.TireStaticAnalysis2.SteadyRollingAnalysis6.TreadSlipAnalysis5.PatternTireAnalysis4.ModalDynamicAnalysis3.TireThermalAnalysis11.AircraftTireAnalysis8.ShapeOptimization(ESCOT)7.ExplicitDynamicAnalysis9.TireFractureAnalysis10.TireUniformityAnalysis12.ManufacturingAnalysisKumhoR&DCenterStructuralDesignAnalysisTeam1.TireStaticAnalysis타이어에정적하중이작용할때에변형에너지와접지압력을해석하여타이어내구력성능을예측함.Simulationitem:Strainenergy,Footprintpressure,Springrate,Cordtension,DimensionTirestaticanalysismodelStraindistributionaroundtireKumhoR&DCenterStructuralDesignAnalysisTeamTireStaticAnalysisKumhoR&DCenterStructuralDesignAnalysisTeam2.TireThermalAnalysis타이어는반복변형에의해에너지손실이발생하는데,이를해석하여온도분포와회전저항을예측함.Simulationitem:Temperature,Rollingresistancesin00WHysterisisLossHysterisislossofrubberTemperaturedistributioninsidetireKumhoR&DCenterStructuralDesignAnalysisTeamTireThermalAnalysisKumhoR&DCenterStructuralDesignAnalysisTeam3.TireSteadyRollingAnalysis타이어가정상상태로회전할때에타이어에작용하는힘과모멘트를해석하여조종안정성을예측함.Simulationitem:Force&moment,Strainenergy,Footprintpressure,Springrate,Cordtension,DimensionLateralForceVerticalForceInflationPressureTirerollinganalysismodelTiredeformedshapeKumhoR&DCenterStructuralDesignAnalysisTeamTireSteadyRollingAnalysisKumhoR&DCenterStructuralDesignAnalysisTeam4.TireModalDynamicAnalysis타이어의고유진동수와진동응답특성을해석하여타이어NVH(Noise,Vibration,andHarshness)성능을예측함.Simulationitem:Modeshape,Naturalfrequency,FrequencyresponseTiremodeshape(2ndmode)Frequencyresponsefunction(FRF)KumhoR&DCenterStructuralDesignAnalysisTeamTireModalDynamicAnalysisKumhoR&DCenterStructuralDesignAnalysisTeam5.PatternTireRo