轮胎结构设计

,Kumho R&D Center,Structural Design Analysis Team,FEM Application on Tire Design,锦湖轮胎,Tire Simulation Technology,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,(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，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,Equation of Motion,Geometry(Mesh),-.Node,-.Element,Material Property,-.Rubber:E,v,-.Cord:E,EPI,Angle,Boundary Condition,-.,-.,F,F,Basic Elasticity,有限要素法正式化,Potential Energy:,Virtual Work :,Final Equation :,1.Tread,2.Carcass,3.Belt,4.Sidewall,5.Bead,6.Innerliner,7.Capply,8.Flipper,9.Apex,Complicated tire geometry,Performance simulation system(KADAS),Powerful puting system(HP Superdome),Complex nonlinear features,轮胎结构说明特征,几何学的非线性,-Large Deformation,Small Strain(X),Lagrangian,Strain(O),材料的非线形性,-Material Non-Linearity,Hyperelastic,Material Model,Moony-,Rivlin,Model,系列,(O),Ogden Model,系列,经济条件的非线形性,-Contact&Friction,Contact condition,Friction condition,h,p,Friction constraint,0 (slip),Penalty method,Contact constraint,h0 p=0 (no pressure),h=0 p0 (contact pressure),Lagrange multiplier method,cr,区域,S/W,H/W,用途,结构设计,CATIA V4 (2),IBM RS/6000,轮胎设计图形处理,Mold,制作图形处理,CATIA V5 (19),IBM Z-Pro,CADOT(In-house),IBM Z-Pro,统一,CAD,结构设计体系,结构说明,ABAQUS V6(15),HP Superdome,结构说明,FEM Solver,IDEAS V10(6),HP B2600,结构说明,Pre/Post Processing,KADAS(In-house),HP L3000,统一,FEM,结构说明体系,流体说明,MSC.Dytran(1),HP Superdome,结构,+,流体说明,FVM Solver,流动说明,Polyflow(2),HP Superdome,橡胶流动说明,FEM Solver,东力学说明,MSC.ADAMS(1),IBM M-Pro,动力学说明,Solver,噪音说明,SYSNOISE(1),HP B2600,噪音说明,BEM Solver,KUPAS(In-house),ISM Z-Pro,统一花纹性能预测体系,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,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,Tire Simulation Technology,/Mold/,/Mold/,Simulation,KADAS,KADAS,KADAS,Wear&Traction Simulation,Noise&Vibration Simulation,Durability&RR Simulation,Ride&Handling Simulation,Design Optimization,Tire Simulation Technology,1,2,3,Tire only,Smooth tire,Static analysis,Tire only,Pattern tire,Steady rolling,Tire+vehicle,Pattern tire,Transient rolling,Strain energy,Footprint pressure,Spring rate,Temperature,Force&moment,Frictional energy,Modal frequency,Hydroplaning,Durability&RR,Ride&handling,Wear&Traction,Noise&vibration,CAD/CAE separation,CAE professionals,CAD/CAE interface,Few engineers,CAD/CAE integration,Most engineers,1995 2000(,),1,(Vector),2001 2006(,),2,(SMP),2007 2010(,),3,(Cluster),KADAS,KADAS,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 Analysis,11.Aircraft Tire Analysis,8.Shape Optimization(ESCOT),7.Explicit Dynamic Analysis,9.Tire Fracture Analysis,10.Tire Uniformity Analysis,12.Manufacturing Analysis,1.Tire Static Analysis,.,Simulation item:Strain energy,Footprint pressure,Spring rate,Cord tension,Dimension,Tire static analysis model,Strain distribution around tire,Tire Static Analysis,2.Tire Thermal Analysis,.,Simulation item:Temperature,Rolling resistance,Hysterisis Loss,Hysterisis loss of rubber,Temperature distribution inside tire,Tire Thermal Analysis,3.Tire Steady Rolling Analysis,.,Simulation item:Force&moment,Strain energy,Footprint pressure,Spring rate,Cord tension,Dimension,Lateral Force,Vertical Force,Inflation Pressure,Tire rolling analysis model,Tire deformed shape,Tire Steady Rolling Analysis,4.Tire Modal Dynamic Analysis,NVH,(Noise,Vibration,and Harshness),.,Simulation item:Mode shape,Natural frequency,Frequency response,Tire mode shape(2nd mode),Frequency response function(FRF),Tire Modal Dynamic Analysis,5.Pattern Tire Rolling Analysis,/,.,Simulation item:Force&moment,PRAT(,Plysteer,Residual Aligning Torque),Frictional energy,Footprint pressure(Pattern tire),Vertical load,Rotation,Pressure,Slip angle,Force&moment(PRAT)prediction,Pattern Tire Rolling Analysis,a,2,a,1,Lateral Force(N),Aligning Torque(N-m),RCF,PRAT,Lateral force,Aligning Torque,Slip angle,Pattern Tire Analysis,6.Tread Slip Analysis,.,Simulation item:Force&moment,PRAT,Frictional energy,Footprint pressure(Pattern only),Tread slip analysis model(TRESA),Frictional energy distribution,Tread Slip Analysis,7.Tire Explicit Dynamic Analysis,/,NVH,.,Simulation item:Cleat impact,Cornering,Standing wave,Dry traction,Longitudinal,Vertical,Cleat impact analysis model,Tire force variation during cleat impact,Cleat Impact Analysis,Standing wave,Critical speed,.,7.Tire Explicit Dynamic Analysis,Standing Wave Analysis(Critical Speed),Axle force,Standing Wave Analysis,ESCOT,.,ESCOT,.,ESCOT,Excellent&Smart Contour Optimization Theory,Escort,.,8.Tire Shape Optimization Analysis,.,Final,Proto,ESCOT-1(,),.,.,Proto,Final,ESCOT-2(,),Final,Proto,.ESCOT-3,.,ESCOT-3(,),9.Tire Fracture Analysis,Global-Local,.,Simulation item:Fatigue life in belt edge&carcass edge,0,Crack size,Total mileage,Global analysis,Local