机械网-微型车悬架设计(英文版)(含CAD零件图装配图)--机械机电

微型车悬架设计(英文版)(含CAD零件图装配图)(任务书,开题报告,外文翻译,文献摘要,论文说明书英文版8000字,CAD图6张)

Abstract

Withtherapiddevelopmentoftheautomobileindustry,peoplehaveputgreatdemandsonthesafety,comfortandstationarinessofautomobilepower,andtheimprovementofautomobilesuspensioncanmeetpeople'srequirements.Atthesametime,therearemoreandmorecarsincities,moreandmorecongestedroadsandmorecompactparkingSpaces小孩白癜风怎么办.Theappearanceofminicarisalsodrivenbythefact.Therefore,itisofpracticalsignificancetodesignthesuspensionofminicar.

Thethemeofmydesignis:thestructuraldesignofthefrontandrearsuspensionsystemofmicrocars.Thetypeoffrontsuspensionismacphersonindependentsuspension.

Themainfunctionofsuspensionistotransferallforcesandtorquesbetweenthewheelandthebody,suchassupportingforce,brakingforceanddrivingforce,etc.,andtoeasetheimpactloadfromunevenroadsurfacetothebody,attenuationofthevibrationcausedbythis,toensurethecomfortofpassengers,reducethedynamicloadofgoodsandvehiclesthemselves.Itsmaintaskistotransferallforcesandtorquesactingbetweenthewheelandtheframe(orbody);Easetheimpactloadfromtheroadtotheframe(orbody),attenuatethevibrationofthebearingsystem,andensuretheridesmoothnessofthecar;Toensurethatthewheelsinunevenroadsurfaceandloadchangeswhentheidealmotioncharacteristics,toensurethestabilityofthevehiclecontrol,sothatthecartoobtainhigh-speeddrivingability.

Whenthecarisdrivingonunevenroadsurface,theelasticactionofthesuspensionmakesthecarproduceverticalvibration.Inordertorapidlyattenuatethisvibrationandrestraintheresonanceofthecarbodyandwheel,reducetheamplitudeofthewheel,thesuspensionshouldbeequippedwithshockabsorber,andmakeithavereasonabledamping.Byusingthedampingeffectofshockabsorber,theamplitudeofautomobilevibrationdecreasescontinuouslyuntilthevibrationstops.

Inordertosatisfythevehiclewithgoodridecomfort,thenaturalfrequencyofthevibrationsystemcomposedofspringmassandelasticcomponentsshouldbeintheappropriatefrequencybandandaslowaspossible.Thenaturalfrequencymatchingofthefrontandrearsuspensionshouldbereasonable.Forpassengercars,thenaturalfrequencyofthefrontsuspensionshouldbeslightlylowerthanthatoftherearsuspension,andtrytoavoidthesuspensionhittingtheframe(orbody).Inthecaseofthemasschangeonthespring,theheightchangeofthecarshouldbesmall,sothenonlinearelasticsuspensionshouldbeadopted青核桃皮能治疗白癜风吗.

Tochoosethecorrectsuspensionschemeandparameters,inthewheel,underthejump,sothatthekingpinpositioningAnglechangeslittle,wheelmovementandguidemechanismmovementtocoordinate,avoidthefrontwheelshimmy;Whenthecaristurning,itshouldbeslightlylesscharacteristic.

Suspensionisrelatedtovariousperformanceofautomobile.Inordertomeettheseperformance,thedesignrequirementsofsuspensionareasfollows:

1)ensuregoodridecomfort.

2)havetheabilitytoattenuatevibrationproperly.

3)ensurethevehiclehasgoodhandlingstability.

The3dmodelwasdesignedbycaita,andthefeasibilityanalysisofthemodelwascarriedoutbyansys,andtheresultswereobtained.

Inthisgraduationdesign,Mcphersonindependentsuspensionwithsimplestructureandlowcostisselectedtoimprovethesmoothnessandcomfortwhenacceleratingandbrakingandensurethestabilitywhendrivinginastraightline.ItcanbeknownthatthecurrentMcphersonindependentsuspensioniswidelyused.

Keywords:Mcpherson;Independentsuspension;CATIA;ANSY

referencemodelparameters

Inthisdesign,themanualcomfortmodelofpanben20181.4lisselectedasthereference.Itsspecificparametersareasfollows:

Length(mm)3730

Width(mm)1650

Height(mm)1530

Wheelbase(mm)2410

Frontwheelbase(mm)1420

Rearwheelbase(mm)1430

packingweight(kg)1020

Maximumpower(KW)74

Maximumtorque(N•m)135

Fronttyrespecification165/60R14

Reartyrespecification

165/60R14

DrivewayLeadprecursor

FrontsuspensiontypeMcphersonindependentsuspension

RearsuspensiontypeTorsionbeamdependentsuspension

Maximumtorquespeed4000

SizeparametersWheelbase(mm)2410

WheelbaseFrontwheel(mm)1420

Rearwheel(mm)1430

QualityparametersAxialloaddistributionno-loadFrontaxle(kg)660

Rearaxle(kg)630

FullloadFrontaxle(kg)780

Rearaxle(kg)885目录

Chapter1Theintroduction1

1.1overviewofsuspension1

1.2introductiontosuspensionparts2

1.2.1elasticelement2

1.2.2shockabsorber2

1.2.3guidingmechanism2

1.2.4transversestabilizerbar3

Chapter2suspensiondesigncalculation4

2.1maintechnicalparameters4

2.1.1referencemodelparameters4

2.1.2naturalvibrationfrequency5

2.1.3suspensionstaticdeflection6

2.1.4suspensiondynamicdeflection7

2.1.5suspensionstiffness7

2.2coilspringdesign8

2.2.1workingprincipleofspiralspring8

2.2关于他克莫司及白癜风的饮食.2designofmainparametersofspring8

2.3shockabsorberdesign11

2.3.1workingprincipleoverviewaboutshockabsorber11

2.3.2selectionofmainperformanceparametersaboutshockabsorber12

Chapter3designofguidemechanismandlateralstabilizerbar15

3.1designofguidingmechanism15

3.1.1designrequirementsofguidingmechanism15

3.1.2Mcphersonindependentsuspensionschematicdiagram16

3.1.3forceanalysisofguidingmechanism17

3.1.4wheelpositioningparameters17

(1)wheelbase17

(2)wheelcamberAngle18

(3)wheelfrontbeam19

3.2designoftransversestabilizerbar19

3.2.1workingprincipleoftransversestabilizerbar19

3.2.2determinationoftransversestabilizerbarparameters19

Chapter4Mcphersonsuspensionfiniteelementmodeling22

Chapter5conclusion27

Reference28

Theappendix30

Thanks34