《轮胎结构设计》PPT课件.ppt

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1、Kumho R&D CenterStructural Design Analysis TeamFEM Application on Tire Design锦湖轮胎锦湖轮胎Kumho R&D CenterStructural Design Analysis Team1.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目录Kumho R&D CenterStructural Design Analysis Team有限要素法有限要素法(Finite Element Method)?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

2、，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 Version Ranking工具使用。有限要素法定义有限要素法定义Kumho R&D CenterStructural Design Analysis Team有限要素法定义有限要素法定义 Equation of Motion Geometry(Mesh)-.Node -.Element Material Property -.Rubber:E,v -.Cord:E,EPI,Angle Boundary Condition -.-.Kumho R&D CenterStru

3、ctural Design Analysis Team FFBasic ElasticityKumho R&D CenterStructural Design Analysis Team有限要素法正式化有限要素法正式化 Potential Energy:Virtual Work :Final Equation :Kumho R&D CenterStructural Design Analysis Team1.Tread2.Carcass3.Belt4.Sidewall5.Bead6.Innerliner7.Capply8.Flipper9.ApexComplicated tire geomet

4、ryPerformance simulation system(KADAS)Powerful computing system(HP Superdome)Complex nonlinear features 轮胎结构说明特征轮胎结构说明特征Kumho R&D CenterStructural Design Analysis Team几何学的非线性几何学的非线性-Large Deformationl Small Strain(X)l Lagrangian Strain(O)Kumho R&D CenterStructural Design Analysis Team材料的非线形性材料的非线形性-

5、Material Non-Linearityn Hyperelastic Material Modell Moony-Rivlin Model 系列系列(O)l Ogden Model 系列系列Kumho R&D CenterStructural Design Analysis Team经济条件的非线形性经济条件的非线形性-Contact&Frictionl Contact conditionl Friction conditionhp Friction constraint 0 (slip)Penalty method Contact constraint h0 p=0 (no pressu

6、re)h=0 p0 (contact pressure)Lagrange multiplier methodcrKumho R&D CenterStructural Design Analysis Team区域区域S/WH/W用途用途结构设计结构设计CATIA V4 (2)IBM RS/6000 轮胎设计图形处理轮胎设计图形处理 Mold 制作图形处理制作图形处理CATIA V5 (19)IBM Z-ProCADOT(In-house)IBM Z-Pro 统一统一 CAD 结构设计体系结构设计体系结构说明结构说明ABAQUS V6(15)HP Superdome 结构说明结构说明 FEM So

7、lverIDEAS V10(6)HP B2600 结构说明结构说明 Pre/Post ProcessingKADAS(In-house)HP L3000 统一统一FEM 结构说明体系结构说明体系流体说明流体说明MSC.Dytran(1)HP Superdome 结构结构+流体说明流体说明 FVM Solver流动说明流动说明Polyflow(2)HP Superdome 橡胶流动说明橡胶流动说明 FEM Solver东力学说明东力学说明MSC.ADAMS(1)IBM M-Pro 动力学说明动力学说明 Solver噪音说明噪音说明SYSNOISE(1)HP B2600 噪音说明噪音说明 BEM

8、SolverKUPAS(In-house)ISM Z-Pro 统一花纹性能预测体系统一花纹性能预测体系CAD/CAE 体系现况体系现况Kumho R&D CenterStructural Design Analysis Team 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 Kumho Automated Design Analysis System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

9、定义Kumho R&D CenterStructural Design Analysis Team /Mold/Mold/Simulation KADASKADASKADAS Kumho R&D CenterStructural Design Analysis TeamKADAS Wear&Traction SimulationWear&Traction SimulationNoise&Vibration SimulationNoise&Vibration SimulationDurability&RR SimulationDurability&RR SimulationRide&Handli

10、ng SimulationRide&Handling SimulationDesign OptimizationDesign OptimizationDesign OptimizationDesign OptimizationKumho R&D CenterStructural Design Analysis Team 1 23Tire onlySmooth tireStatic analysisTire onlyPattern tireSteady rollingTire+vehiclePattern tireTransient rollingStrain energyFootprint p

11、ressureSpring rateTemperatureForce&momentFrictional energyModal frequencyHydroplaningDurability&RRRide&handlingWear&TractionNoise&vibrationCAD/CAE separationCAE professionalsCAD/CAE interfaceFew engineersCAD/CAE integrationMost engineers 1995 2000()1(Vector)2001 2006()2(SMP)2007 2010()3(Cluster)KADA

12、S Kumho R&D CenterStructural Design Analysis TeamKADAS Kumho Automated Design Analysis System(KADAS)1.Tire Static Analysis 2.Steady Rolling Analysis 6.Tread Slip Analysis 5.Pattern Tire Analysis 4.Modal Dynamic Analysis 3.Tire Thermal Analysis11.Aircraft Tire Analysis 8.Shape Optimization(ESCOT)7.Ex

13、plicit Dynamic Analysis 9.Tire Fracture Analysis10.Tire Uniformity Analysis12.Manufacturing AnalysisKumho R&D CenterStructural Design Analysis Team 1.Tire Static Analysisn .n Simulation item:Strain energy,Footprint pressure,Spring rate,Cord tension,DimensionTire static analysis modelStrain distribut

14、ion around tireKumho R&D CenterStructural Design Analysis Teamq Tire Static AnalysisKumho R&D CenterStructural Design Analysis Team 2.Tire Thermal Analysisn ,.n Simulation item:Temperature,Rolling resistanceHysterisis LossHysterisis loss of rubberTemperature distribution inside tireKumho R&D CenterS

15、tructural Design Analysis Teamq Tire Thermal AnalysisKumho R&D CenterStructural Design Analysis Team 3.Tire Steady Rolling Analysisn .n Simulation item:Force&moment,Strain energy,Footprint pressure,Spring rate,Cord tension,DimensionLateral ForceVertical ForceInflation PressureTire rolling analysis m

16、odelTire deformed shapeKumho R&D CenterStructural Design Analysis Teamq Tire Steady Rolling AnalysisKumho R&D CenterStructural Design Analysis Team 4.Tire Modal Dynamic Analysisn NVH (Noise,Vibration,and Harshness).n Simulation item:Mode shape,Natural frequency,Frequency responseTire mode shape(2nd

17、mode)Frequency response function(FRF)Kumho R&D CenterStructural Design Analysis Teamq Tire Modal Dynamic AnalysisKumho R&D CenterStructural Design Analysis Team 5.Pattern Tire Rolling Analysisn /,.n Simulation item:Force&moment,PRAT(Plysteer Residual Aligning Torque)Frictional energy,Footprint press

18、ure(Pattern tire)Vertical loadRotationPressureSlip angleForce&moment(PRAT)predictionq Pattern Tire Rolling Analysisa2a1Lateral Force(N)Aligning Torque(N-m)RCFPRATLateral forceAligning TorqueSlip angleKumho R&D CenterStructural Design Analysis Teamq Pattern Tire AnalysisKumho R&D CenterStructural Des

19、ign Analysis Team 6.Tread Slip Analysisn .n Simulation item:Force&moment,PRAT,Frictional energy,Footprint pressure(Pattern only)Tread slip analysis model(TRESA)Frictional energy distributionKumho R&D CenterStructural Design Analysis Teamq Tread Slip AnalysisKumho R&D CenterStructural Design Analysis

20、 Team 7.Tire Explicit Dynamic Analysisn /NVH .n Simulation item:Cleat impact,Cornering,Standing wave,Dry tractionLongitudinalVerticalCleat impact analysis modelTire force variation during cleat impact Kumho R&D CenterStructural Design Analysis Teamq Cleat Impact AnalysisKumho R&D CenterStructural De

21、sign Analysis Team Standing wave ,Critical speed .7.Tire Explicit Dynamic Analysisq Standing Wave Analysis(Critical Speed)Axle forceKumho R&D CenterStructural Design Analysis Teamq Standing Wave AnalysisKumho R&D CenterStructural Design Analysis Team ESCOT .ESCOT .ESCOT Excellent&Smart Contour Optim

22、ization Theory Escort .8.Tire Shape Optimization AnalysisKumho R&D CenterStructural Design Analysis Team .Final Proto ESCOT-1()Kumho R&D CenterStructural Design Analysis Team .,.Proto Final ESCOT-2()Kumho R&D CenterStructural Design Analysis TeamFinal Proto ,.ESCOT-3 .ESCOT-3()Kumho R&D CenterStruct

23、ural Design Analysis Team 9.Tire Fracture Analysisn Global-Local .n Simulation item:Fatigue life in belt edge&carcass edge0Crack sizeTotal mileage Global analysisLocal analysisFatigue lifeKumho R&D CenterStructural Design Analysis Team 10.Tire Uniformity Analysisn ,Uniformity .n Simulation item:Low

24、speed uniformity(RFV,LFV)InputSolvingOutput0 0Tire 1RFVForceTire uniformity simulation procedureKumho R&D CenterStructural Design Analysis Teamq Tire Uniformity AnalysisKumho R&D CenterStructural Design Analysis Team 11.Aircraft Tire Analysisn .n Simulation item:Inflation,static,steady rolling analy

25、sisStrain energy distributionFootprint pressure distributionKumho R&D CenterStructural Design Analysis Team 12.Tire Manufacturing Analysisn Bladder ,.n Simulation item:Cure bladder shaping,Post cure inflation,Indentation Cure bladder shaping analysisPost cure inflation analysis(Temperature)Kumho R&D

26、 CenterStructural Design Analysis Teamq Cure Bladder Shaping AnalysisKumho R&D CenterStructural Design Analysis TeamWear&Traction SimulationWear&Traction SimulationNoise&Vibration SimulationNoise&Vibration SimulationDurability&RR SimulationDurability&RR SimulationRide&Handling SimulationRide&Handling SimulationOptimum DesignOptimum DesignOptimum DesignOptimum DesignKADAS