基于虚拟样机技术的汽车驱动桥桥壳CADCAE系统的建立于研究外文文献翻译中英文翻译外文翻译.docx

基于虚拟样机技术的汽车驱动桥桥壳CADCAE系统的建立于研究外文文献翻译中英文翻译外文翻译.docx

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基于虚拟样机技术的汽车驱动桥桥壳CADCAE系统的建立于研究外文文献翻译中英文翻译外文翻译

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附录A外文文献原文

A1EstablishandresearchonCA/CAEsysytemofautomobiledriveaxlehousingbasedonvirtualprototypetechnology

Virtualprototyperefertoamodelwhichisinthestepofproductprogress,occurringinthecomputerrealm,,aimingattheoptimizationbasedontheCADmodelusedtostimulatinganalysisproduct.Virtualprototypeinmainlyusedfortestwhichwasfailedbyphysicaltest.Basedontheresultwhichisdrawnfromthestimulationresult,itiseasytomodifyandguidedesign,untilreachtheoptimisticdesign

Automobiledriveaxlehousingisamainpartofamobile.disconnectdriveaxlehousingisusedforbearingthemobile’sweight,transferringtheloadtothewheelsDrawingforce,brakingforcelateralforceandverticalforcearetransferredtoframeandcompartmentbydriveaxlehousing.Sodriveaxlehousingiseitherabearingoratransmissionitem.Ifnotcorrectlydesignedorsomeproblemoccurredwhilemanufacturing,driveaxlehousingmaydeformedorfracture.Asatraditionaldesignmethodissocostlythatisnecessarytointroducethevirtualprototypetechnology.

A1.1designscheme

Traditionaldesignmethodfordriveaxlehousingisfirstlygivingascheme,manufacturing,asampleitemthenaseriestest（suchasstiffnesstestbendingfatiguetestandstaticstrenthtest）iscarriedoutApparentlythismethodisverymoneyconsuming,andthefinalparametermaybenotoptimal.ifadopttheVirtualprototypetechnologystimulazingkindsofworkingconditionofdriveaxlehousing,anddrawaseriesofoptimalparameters.Basedontheseparameterthephysicalmachinearecarriedouttodophysicaltest.thismethodcansavetime,cuttingthecost,thusbringinhugebenefittotheenterprise.

Moderntrialproductionprogressvarylargelytothetraditionalone.Asdepicted,inthepicture,Aloopisabsentinthetraditionaldriveaxlehousingmakingvirtualprototypecanassessthecostqualityandmanufacturabilityonthecomputer.Iftheassessmentisnotsatisfying,itisnecessarytoadjust.repeataloopuntilreachaidealparameter.

Thisschemedesignasoftwareterrace,providingainterfaceforSolidworkspatronandNastron,usingsuperiorityofthisprofessionalsoftware,anddevelopthesesoftware,butadriveaxlehousingproductdesignterrace.

Consideringthequestionofimprovingtheanalysisefficiencyandsimplifyingfiniteelement,thissystemadoptamethodwhichusesparametricmodelingthatistotallydifferentfromdomakeupforCADmodel.AndtheCADmodelisonlyusedforoversight

A1.2ParameterizedModelingbySolidWorks

Theyareallavailableforsecond-timedevelopmentofSolidWorksforthesoftwaresthatsupportOLEandCOM.Becauseofdesignrequirements,thedevelopmentsoftwareofthesystemisDelphiandseconddevelopmentsoftwareofSolidWorksisOLE.ThecopyrightofSolidWorksis2006.Tousethismethod,itmustberegisteredforauto-severedincludingfilessldworks.tlbandelementfilesthatfilenamesareSldWorks_TLB.passeveredbySolidWorksunderDelphiprogramenvironment,andtheyareavailableafterprogramsarecomplied.

ThetopologystructureofSolidWorksistypicallyfivelayerstopologystructure.Apartisconsistofbodies,andbodiesincludesurfaces,andsurfacesincludeedges,andedgesincludecurvesandpoints.Itmayuserecordindelphitodefinebodies,surfacesandpointsthesedatastructureandapplyrespectivelytostoretopologyinformation.ThestepsoftheparameterizedmodelingofCADbySolidWorksareasfollows:

firstly,itmustbedefinedcorrectlyfortherelationshipbetweenautomobiledimensionandotherdimensions.Secondly,initializethevariousrecordandauto-productthedrawingofaxlehousingusingAPIfunction.Lastly,itisavailableforuserstochecktheCADmodelandmodifyvariousdimensionsontheplate.Theprogramcanauto-modifytheotherrelativedimensionsandredrawthepictureinSolidWorksbyusingtherelationshipsthathavebeendefinedpreviously.

A1.3Patran&NastranFEAanalysis

A1.3.1PCLprogram

MSC/PATRANprovidesafullyfunctionsprogramlanguageforusers,asPCL.PCLprovideabundantoftablesandmenusandallowuserstoreadandwriteallinformationinPatrandatabase,whichstructureissimilarwithClanguage.Thepaperdevelopstheanalysismoduleoftheautomobiledriveaxlehousing,whichincludesparameterizemodeling,ALE,materialdefinition,loadcasesdefinition,Nastrananalysissubmittedandresultspost-possessingandotherfunctions.

TherearenospecialdevelopenvironmentinPCL,generallythecodesarewrittenintesteditorandsavedas*.pclformat,andthenthefilesarepre-compiledas*.cppformatinDOS,anddebugtheminPatranatlast.Thedetailoperatesareasfollows:

Pre-compile*.pclfile:

cpp*.pcl*.cpp

debug*.cppfileinpatran:

!

!

input*.cpp

Whenstarting,Patranwillexecuteinit.pclfileunderitsrootcatalogue.Thefileincludestwocommands:

!

!

INPUTp3prolog.pcland!

!

IPUTp3epilog.pcl.Aspre-compilethesetwofileswhenPatranstarts.UserscanwritecommandstoinitializePatranstartingviewport.Forexample,writecommands：

!

!

iputC:

\MSC.Software\MSC.Patran\2005_r2\rearhouse.cppandrearhouse.init（）inp3epilog.pcl,inwhich,rearhouse.cppisthesecond-timedevelopmentprogramforautomobiledriveaxlehousing.Itwillinfluencethestartingspeed,forthis,userscanwriteself-definitionfunctionsandcompilethemintoadatabase,whichPatrancancalldirectly.Themethodisthat:

InputcommandsinPatran:

!

!

COMPLIErearhouse.cppintorearhouse.plb

!

!

libraryrearhouse.plb

!

!

llibrarkeepopenrearhouse.plb

Asthis,Patrancanloadincludingfileswhenitstartsandthespeedisratherfast.Forinitializetheviewport,usersneedtoinputthat:

rearhouse,init（）.

A1.3.2ProgramDesignFlowchar

TheFEAparameterizemodelingpartisimplementedasfollows:

Inputvariouskeyparametersintodelphi,andtheywillbecompiledandformatafilewhosesuffixis.cpp.Thecontentsofinit.pclcanbemodifiedbydephi.Asthat,userscanenterPatranbyclick“FEAparameterizemodeling”inthissystem,andtheywillseeanewfile,whosedrawingzonehascompleteFEAmodule.Theprogrampartsdon’tneedtocommunicatewithusersandjustlikeabackprogram.InthisprogressitwillneedAPIfunctionofWindowssystem.

DuetotheyrequirehighcommunicateforALE,materialdefinition,loadcasesdefinition,Nastrananalysissubmittedandresultspost-possessingandotherfunctions,whicharenotconvenientfordelphitocontroldirectly,thesepartswillbewrittenbyPCL.Patranmaycopythe.CPPfilestothecatalogsuchas“C:

\MSC.Software\MSC.Patra\2005_r2”,andmodifytherelativecontentsininit.pclfile.

Allowingforthespecialfeaturesofhousingmodelingandcomputingspeedofcomputers,theprogramalluseshellelementstosimulatehousing.Thereforeitusesgm_const_surface_extrude（）toproductshellfunctionwhenmodeling,andusefem_create_mesh_surf_4（）tomeshwhenFEAmeshing.

A1.4Softwareapplicationexample

Thissoftwareisestablishedbythedelphicomputerlanguage.Afterenterthesystem,preliminarydesignofautomobiledriveaxlehousingbybasismechanicsmustbecompletedtodefinethekeydimension,thenCAE/CADmodelingandanalyzingofvariousoperatingconditionsshouldbestarting.ThesoftwareinterfaceisshownintheFigureA1,FigureA2showsthesolidmodelofaxlehousingbySolidWorksparameterizedmodeling.

FigureA1Thesoftwareinterface

FigureA2Thesolidmodelofaxlehousing

TableA1illustratesmaterialparameterswhich

Component

Material

Modulusofelasticity

Poissonratio

Density

Driveaxlehousing

QT400-15

1.962E8KPa

0.3

7.8E-6kg/mm^3

Halfaxlecasing

45Mn2

2.1E8KPa

0.28

7.9E-6kg/mm^3

FiveoperatingconditionsareanalyzedbyPatran&Nastraninthissystem,whichareshowninFigureA5,staticof2.5timesfullload,drivingbythemaximumdrawingforce,brakeoffullload,turningaroundoffullload,brakeoffullloadinturningaround.Longitudinaldirection,sidedirection,verticaldirectionandrevolveoflongitudinaldirectionconstraintsarelaidonatthecenterofsteelplatespring.Loadislaidonatthehalfaxlecasing,whichresultingstressisinconsistentwithactualcondition,bringingnoimpactonstressofotherpartsofaxlehousing.TheresultshowsthatTrescastressonwheelsideislargerinTableA3.

TableA2Thestressofaxlehousingof5operatingconditions

Staticof2.5timesfullload

Drivingbythemaximumdrawingforce

Brakeoffullload

Turningaroundoffullload

Brakeoffullloadinturningaround

Stressincriticalsection

175

87

93.5

158

205

Theallowablestressofaxlehousingis400MPa,thedesignisverysafe,whichshownintheTableA2.Figure8illustratesthedistributionofstressnearbythesteelplatespring.

FigureA3Thedistributionofstressnearbythesteelplatespring

TableA3illustratestheformer9thordernaturalfrequencyofautomobiledriveaxlehousingbythissystem.

TableA3Theformer9thordernaturalfrequency

Order

1

2

3

4

5

6

7

8

9

Frequency

181.47

265.91

433.24

614.33

658.76

1119.9

1166

1347.4

1399.6

Sincetheroadisnotabsolutelysmooth,automobilenaturalfrequencyoftenoccurbetween1~20Hz.Resonanceofaxlehousingwon’tbecaused.Thisresultisreasonable.

FigureA4The1stordermodeofvibration

附录B外文文献中文翻译

A1基于虚拟样机技术的汽车驱动桥桥壳CAD/CAE系统的建立于研究

虚拟样机是指在产品设计阶段，在计算机世界中，以优化设计思想为指导，以产品CAD模型为基础，利用各种相关CAE分析软件，进行产品主要性能仿真分析的数字模型㈣。

虚拟样机主要进行对物理样机而言难以进行的试验，根据虚拟样机反馈的仿真结果，修正、指导设计，直至获得系统级的优化设计方案。

驱动桥桥壳是汽车上主要零件之一，非断开式驱动桥壳起着支承汽车荷重的作用，并将载荷传给车轮。

作用在驱动车轮上的牵引力、制动力、侧向力和垂向力也经过桥壳传到悬架及车架或车厢上。

因此，桥壳既是承载件又是传力件。