離合器的相關(guān)計算

Simulation&designtools

仿真及設(shè)計工具Clutchcalculation

離合器計算Clutchcalculation 離合器計算ClamploadcalculationCOEFtesttechniqueRangelawsClutchtorqueThermaladaptationStart-upenergyDecisiontable&curvesLifetimecalculationWeartesttechniquesCalculationcode工作壓力計算COEF試驗技術(shù)范圍確定的原則離合器扭矩?zé)崮艿钠ヅ鋯拥哪芰颗卸ū砑扒€壽命的計算磨損試驗的技術(shù)計算規(guī)則Clamploadcalculation

工作壓力計算Clamploadcalculation 工作壓力計算

Clutchtorquecapacity

離合器傳扭能力Calculationoftheclutchmaximumtorquecapacity離合器最大傳扭能力計算離合器傳遞扭矩壓緊載荷摩擦系數(shù)作用半徑摩擦面數(shù)目Inertia慣量TestClutch試驗離合器ElectricalMotor電機RatingandanalysisoffrictioncoefficientWearratingandanalysisAnalysisofthermalclutchissueClamploadcalculation

工作壓力計算

COEFFtesttechniqueCOEFF 實驗方法定義和分析摩擦系數(shù)定義和分析磨損分析離合器熱能結(jié)果Testcycle試驗次數(shù)Clamploadcalculation

工作壓力計算

COEFFtesttechnique COEF試驗技術(shù)Clamploadcalculation 工作壓力計算

COEFFtesttechnique COEF試驗計算3energylevels

BasicEnergyLevel(BEL)

EnergyissufficienttoinduceenoughwearinashortperiodoftimeMediumEnergyLevel(MEL)

AverageenergybetweenBELandHELHighEnergyLevel(HEL)

Harddutycyclebutremainingnon-destructive2temperaturelevels

80and200°C.3種能量水平基本的能量水平(BEL)在短期內(nèi)吸收由于磨損產(chǎn)生足夠的能量中等能量水平(MEL)處于基本和高的之間高的能量水平(HEL)在惡劣的條件下循環(huán)但是沒有破壞2個溫度水平80和200°C.Nonrotatingparts不旋轉(zhuǎn)部件Rotatingparts旋轉(zhuǎn)部件Inertia慣量Brakeclutch制動離合器E–Engine電機Torquemeter扭矩儀Clamploadcalculation 工作壓力計算

COEFFtesttechnique COEFF試驗技術(shù)Step1Step2Step3Step4Step5Step6Step7250cycles1000cycles250cycles1000cycles750cycles250cycles1000cycles80°C200°C80°C200°C200°C80°C200°CBELBELMELMELHELBELBELClamploadcalculation

工作壓力計算

Torquemeasurement

扭矩測量OD: Outerdiameteroffacing

摩擦片外徑ID: Innerdiameteroffacing

摩擦片內(nèi)徑扭矩:Nm摩擦系數(shù)計算壓緊力摩擦片面數(shù)摩擦片外徑摩擦片內(nèi)徑平均扭矩Clamploadcalculation

工作壓力計算

Measurementofthefrictioncoefficient

μ

測量摩擦系數(shù)μ

Forastep:Frictioncoefficientμ“minicourant”definition對每一階段:記錄發(fā)現(xiàn)最小的摩擦系數(shù)Forthetest:Frictioncoefficientμ“minicourant”definition對試驗:記錄發(fā)現(xiàn)最小的摩擦系數(shù)Minimalvalueoftheμ?

minicourant

?ofallthesteps

所有的階段中最小值的μFrictioncoefficientvalueforclamploadcalculation用摩擦系數(shù)對工作壓力進行評價Clamploadcalculation

工作壓力計算

Measurementofthefrictioncoefficient

μ

測量摩擦系數(shù)μ

摩擦系數(shù)計算用摩擦系數(shù)(平均值-10%Μ平均值Calculationoftheclutchmaximumtorquecapacity離合器最大傳扭能力計算Clamploadcalculation

工作壓力計算

Clutchmaximumtorquecapacity

離合器的最大傳扭能力離合器傳遞扭矩壓緊載荷摩擦系數(shù)作用半徑摩擦面數(shù)目離合器比率預(yù)載荷：軸承預(yù)載荷沒有軸承預(yù)載荷:有軸承預(yù)載荷:Clamploadcalculation

工作壓力計算

Clutchmaximumtorquecapacity

離合器最大傳扭能力最大發(fā)動機扭矩安全系數(shù)(后備)最大傳扭能力離合器最大傳扭能力壓緊載荷Clamploadcalculation

工作壓力計算

Energylevels

方法能量水平Thequestionishowtodetermineenergylevelsinordertohaveconsistenttestresultsvs.clutchsizesTheanswerisarangelogicbuilton:facingsurfacevs.sizelawpressureplatemassvs.sizelawpressureplatemassvs.enginepowerlawenergylaw針對離合器尺寸問題在于如何確定能量的水平使得與試驗結(jié)果一致回答建立在邏輯推理的上摩擦片表面與尺寸原則壓盤質(zhì)量與尺寸原則壓盤質(zhì)量與發(fā)動機功率的原則能量原則Clamploadcalculation

工作壓力計算

Facingsurfacevs.sizelaw

摩擦片表面與尺寸的規(guī)律Clamploadcalculation

工作壓力計算

Pressureplatemassvs.sizelaw

壓盤質(zhì)量與尺寸的規(guī)律Dq=KEST..1Clamploadcalculation

工作壓力計算

Surfacetemperature

表面溫度Surfacetemperatureformula表面溫度公式CfESe=(,)1Conicalstrainvs.energyandthickness錐型變形與能量和厚度Clamploadcalculation

工作壓力計算

Conicalstrains

錐型變形00.10.20.30.40.50.60.7050100150200250300350400EnergyinkJConicityinmmThickness15mmThickness26mmThickness28mm138kJHELsize250237kJHELsize350315kJHELsize430Finiteelementmethodresults

有限元計算的結(jié)果Energydissipatedin3seconds

能量分為3檔Clamploadcalculation

工作壓力計算

Energylaw

能量規(guī)律Clamploadcalculation

工作壓力計算

Energylaw

能量規(guī)律Clamploadcalculation

工作壓力計算

Thermalfluxlaw

熱能變化規(guī)律Exampleofclamploadcalculation

工作壓力計算的例子Thermaladaptation

熱能匹配EMRMCRF=-+12111222.....((....(sin()))ddwrgramr

:Energydissipatedintheclutch(J)

離合器能量分布E

:Vehiclemass(kg)

整車質(zhì)量M

:Tireradius(m)

輪胎半徑R

:Axleandgearboxratio

主傳動比與變速器速比d:Earthgravity

重力加速度g:Maximumtorque

最大扭矩Cm:Rollingdrag(0.015)

轉(zhuǎn)動摩擦系數(shù)FrEnginespeed@maximumtorque(Rd/s)

最大輸出扭矩下發(fā)動機轉(zhuǎn)速

:/ω:Roadslope(rad)

道路的坡度α:Transmissionyield

傳遞效率ρThermaladaptation

熱能匹配

Start-upenergycalculationvs.theslope

起步能量的計算與坡度Thermaladaptation

熱能匹配

Start-upenergyvs.slope

起步能量與坡度Thermaladaptation

熱能匹配

Start-upenergycalculationatwheelslipping

在車輪滑動下起步能量計算

:Energydissipatedintheclutch(J)

離合器能量分布E

:Vehiclemass(kg)

整車質(zhì)量M

:Tireradius(m)

輪胎半徑R

:Axleandgearboxratio

主傳動比與變速器速比d:Earthgravity

重力加速度g:Maximumtorque

最大扭矩Cm:Rollingdrag(0.015)

轉(zhuǎn)動摩擦系數(shù)FrEnginespeed@maximumtorque(Rd/s)

最大輸出扭矩下發(fā)動機轉(zhuǎn)速

:/ω:Roadslope(rad)

道路的坡度α:Transmissionyield

傳遞效率ρμt:Tyre–roadfrictioncoefficient輪胎與路面摩擦系數(shù)m:Massondrivingaxle驅(qū)動軸質(zhì)量Thermaladaptation

熱能匹配

Decisiontable

判斷表Thermaladaptation

熱能匹配

Start-upenergycurvesvs.usage

起步能量曲線與應(yīng)用Thermaladaptation

熱能匹配

Decisioncurves

判斷曲線Lifetimecalculation

壽命計算Lifetimecalculation

壽命計算

Basichypothesis

最初假設(shè)Weartestprocedure

磨損實驗程序Lifetimecalculation

壽命計算

F202wearrate(430size) F202磨損比率(430mm)52.510515821050°C80°C110°C150°C0.610.150.070.0350.50.120.080.040.550.140.10.050.10.0500.10.20.30.40.50.60.70.80.9F202wearinmmfor10000opérations52.510515821050°C80°C110°C150°C28.89.46.66.623.67.67.67.626.08.89.49.49.49.40.05.010.015.020.025.030.035.040.0F202wearinmm3/MJLifetimecalculation

壽命計算

F20252.510515821050°C80°C110°C150°C0.750.550.290.150.550.30.20.10.520.20.130.060.080.04500.10.20.30.40.50.60.70.80.9F491wearinmmfor10000opérations52.510515821050°C80°C110°C150°C35.434.627.428.326.018.918.918.924.612.612.311.30.00.07.68.50.05.010.015.020.025.030.035.040.0F491wearininmm3/MJLifetimecalculation

壽命計算

F491Lifetimecalculation

壽命計算

F51052.510515821050°C80°C110°C150°C0.490.190.120.0550.330.140.0950.0450.290.110.0450.0250.0350.0200.10.20.30.40.50.60.70.80.9F510Wearinmmfor10000opérations52.510515821050°C80°C110°C150°C0.490.190.120.0550.330.140.0950.0450.290.