基于总成特性车辆动力学建模ppt课件.pptx

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1、基于总成特性车辆动力学建模ModelingofVehicleDynamicsbasedonassemblyFeature2008版SAEJ670解读SAEJ670V0022008年1月发布了SAEJ670V002，发展了1976年的V001AxisandCoordinateSystemsVehicleSuspensionandSteeringBrakesTiresandWheelsStatesandModesInputsandResponsesVehicleLongitudinalResponseVehicleLateralResponseRid

2、eVibration2.1AxisandCoordinateSystems轴和坐标系AxisandCoordinateSystemsInertialReference惯性坐标系AxisSystem轴系CoordinateSystem坐标系GroundPlane地平面RoadSurface路面RoadPlane道路平面（轮胎印迹平面）VehiclePlaneofSymmetry车辆对称面Earth-FixedCoordinateSystem地面固定坐标系VehicleCoordinateSystem车辆坐标系VehicleReferencePoin

3、t车辆参考点TireCoordinateSystem轮胎坐标系WheelCoordinateSystem车轮坐标系AxisandCoordinateSystemsAxisandCoordinateSystems2.2VEHICLE车辆GeometryandMassesWheelbaseL轴距车辆静止在水平面上时，在规定载荷下，方向盘转角为零度，设定车辆高和悬架高度，在平行于X轴上测量的，车辆同侧轮胎接地点中心的距离。Track(TrackWidth,WheelTrack)T轮距车辆静止在水平面上，在规定载荷下，设定车辆高度或悬架高度同一车轴上两个

4、轮胎的接地点中心的平行于Y轴方向的距离，再测量对于双轮车辆，内外侧轮胎接地中心中点的距离。UnsprungWeight(UnsprungMass)非簧载质量one-halftheweightofthesuspensionlinkage,ridesprings,anddriveshaftsSprungWeight(SprungMass)簧载质量BaseVehicleMass基本车重CurbMass整备质量Payload预载VehicleOperatingMass车辆实际质量PassengerMass(68kg)乘员质量GeometryandMass

5、es吉林大学汽车动态模拟国家重点实验室ADSLofJLUVehicleCenterofGravity(C.G.)车辆重心Sprung-MassCenterofGravity簧载质量重心MassMomentsofInertia质量转动惯量VehicleRollMomentofInertia车辆侧倾转动惯量VehiclePitchMomentofInertia车辆俯仰转动惯量VehicleYawMomentofInertia车辆横摆转动惯量VehicleRoll-YawProductofInertia车辆侧倾-横摆的转动惯量GeometryandMa

6、ssesKinematicsVelocities速度Accelerations加速度AngularMotionVariables角加速度VehicleEulerAngles(ψ,θ,φ)车辆欧拉角ForcesandMomentsLongitudinalForceFX纵向力LateralForceFY侧向力VerticalForceFZ垂直力RollMomentMX侧倾力矩PitchMomentMY俯仰力矩YawMomentMZ横摆力矩2.3SUSPENSIONANDSTEERING悬架与转向SuspensionIndependentSuspens

7、ion独立悬架Solid-AxleSuspension非独立悬架SuspensionCorner转向悬架非独立悬架独立悬架SuspensionComponentsAxle车轴BallJoint球形接头Bushing衬套ControlArm(Wishbone)摆臂Damper减震器JounceStop(JounceBumper,BumpStop)上缓冲块ReboundStop下缓冲块SuspensionComponentsKnuckle(HubCarrier,Upright)转向节Link连杆RideSpring弹簧StabilizerBar(An

8、ti-RollBar,Anti-SwayBar)横向稳定器TrackBar(PanhardRod)横拉杆SteeringWheel(Ha