BIW Strategy 案例 1

NLCBIWStrategyContents1.NMC1CrashOverview2.ClosuresMaterials(Steel/Aluminium/Plastic)Sidedoorstrategy(fulllengthinner/outerpressings,rolledsectionframe,modulardesign,etc.)Fuelfillerpocket(plastic/steel)Trunklidhinges(swanneck/multilink)3.CarryOverNMC1OpportunitiesBIWDoorsystems4.StructuralFoamSolutionsNMC1basedFEinvestigationproposalPotentialNMC1physicalbuildandtest5.FEA‘headstart’usingmorphedNMC1structure.Opportunitytoreduceboxsectionsizes(e.g.sillsection)fromNMC1platform.UnderstandeffectofV6enginepackageonfrontcrashperfromance.6.AdvancedbodystructureweightsavingtechnologiesMaterialselection(UHSSteels,Aluminium)NewtechnologiesSpaceFrame7.PlasticSpareWheelWell8.ExteriorTrimLinkLinkLinkLinkLinkLinkLinkLink1.NMC1CrashStructureOverviewNMC1PrimaryFrontCrashStructurePrimarycrashbackupstructure–designedtominimisecabinintrusion.ExtensiveuseHSSandUHSSsteel.Boltonarmature.CrushcansdesigntoabsorblowspeedimpactavoidingdamagetotheBIW(boltonpartsexcepted).SecondaryloadpathsintothesillandtunnelAdditional‘antiintrusion’panels(insidecabin)designedtodriveloadintotheApoststructure2pieceBIWsidemembers(withlocalreinforcements)-primaryenergyabsorptionstructureduringfrontcrasheventsCabinFrontCrashLoadDistributionPathsUHSScontinuousfronttorearsillboxsectionAPost/CantrailcontinuousHSSboxsectionHSSAPostLowersectionwithinternalHingereinforcementsHSSCentreTunnelFrontCrashLoadPathsZone1–DesignedtocrushfullytocopewiththatchamregulationsZone2–PrimaryenergyabsorptionstructureZone3–ReducecabinintrusionandmaintainpassengercellintegrityZone3Zone2Zone1KeySideViewBottomViewSideImpactStructureConstantUHSSsillsectionwithinternalreinforcementsHSSBPostInnerandOutertoresistbendingUHSSFrontSeatCrossmemberswithsteelTunnelReinforcementstocarryloadsacrossthecarAPost/CantrailcontinuousHSSboxsectionSteelHeelboardReinforcementtocarryloadsacrossthecarRoofBowandHeaderstocarryloadsacrossthecarRearCrashPrimaryenergyabsorptionstructure–designedtominimisecabinintrusionandavoidanyfueltankdamage.Boltonarmature.CrushcansdesigntoabsorblowspeedimpactavoidingdamagetotheBIW(boltonpartsexcepted).AdditionalReinforcementsaddedlocallytoassistcontrollablecrashmechanismandproviderequiredlevelsofstiffnessforchassismounting.Seatcrossmemberdesignedtoabsorbseatbeltanchorageloadsgeneratedinarearcrash2.ClosuresBIWDoorsComparisonInnerSkinFrameCantrailExteriorFinishBPostExteriorFinishInteriorFinishWeltSealDoorSideSealProsConsVWFoxFullheight1pieceFullheight1pieceN/ABodycolourBodycolourBodycolour??-Lowoverallpiececost-goodbuildtolerances-easytocontrolwateringressintodoor-Limitedstylingoptions-BIWtoolinginvestment-limitedcarryover/variantopportunities-additionalpartsrequiredtoachieveframestiffnesstargets-visiblebodycolourinsideRover25Fullheight1pieceFullheight1pieceN/ABodycolourStickondecalBodycolourFulldoorFulldoor-upperclippedintoCchannel,lowerpeggedAsaboveAsabove+warrantyconcernswithdecallifespanRover45Fullheight1pieceFullheight1pieceN/ABodycolourPlasticfinisherBodycolourLoweronlyFulldoor-fixingmethod??-Lowoverallpiececost-goodbuildtolerances-Limitedstylingoptions-BIWtoolinginvestment-limitedcarryover/variantopportunities-additionalpartsrequiredtoachieveframestiffnesstargets-visiblebodycolourinsideRover800Fullheight1pieceFullheight1piece'wrapover'N/ABodycolourBodycolourBodycolourFulldoor?-Lowoverallpiececost-easytocontrolwateringressintodoor-reductioninvisiblebodysidereducestoolingdifficulties-Limitedstylingoptions-BIWtoolinginvestment-limitedcarryover/variantopportunities-additionalpartsrequiredtoachieveframestiffnesstargets-visiblebodycolourinsideNMC1Fullheight1pieceLoweronly-separateframestiffenerN/ARubberfinisherAluminiumfinisher(paintedblack)BodycolourFulldoorNone(fliponcantrailseal,separatelowerdoortosillseal)Rover75Fullheight1pieceLoweronly-separateframestiffenerN/ARubberfinisherSteelfinisher(paintedblack)BlackplasticfinisherFulldoorFulldoor-doublesidedtapeHondaAccordLoweronly-separate(tailorblanked)upperLoweronly-separateframestiffenerN/ARubber/stainlesssteelFinisher(type??)BodycolourFulldoorFulldoor(pegged).Note,mouldedwithcantrailrubberfinisherHondasomethingLowerOnlyLowerOnlyRolledsection(differentsectioncantrailtoBpost,migweldedjoint)mig/spotweldedtolowerBodycolour/black(additionalpaintshopaction)Bodycolour/black(additionalpaintshopaction)Bodycolour/black(additionalpaintshopaction)Fulldoor??AudiA6LoweronlyLoweronlyRolledsection(cantrailandBpostall1piece)-boltin?RubberFinisherRubberfinisher(note-plasticpartfittedtobodyside.Frtandreardoorframesdonotmeet)RolledsectionpaintedblackFulldoorFulldoor-fixingmethod??BMW3SeriesCoupeLoweronlyLoweronlyNone-framelessN/AN/AN/AFulldoorLoweronly-Sportystyle-Expensivetoengineer-NVHlevels-autoglassdroprequired-extensivesealdevelopmentrequired-difficulttoseal100%SteelVs.AluminiumDiscussionAssySteel360.007850.001.00FenderRH5.033.471.814.892.724.539.42Aluminium1420.002700.002.00FenderLH5.033.471.814.892.724.539.42Bonnet18.7212.926.7418.2010.1116.8535.04FrontDoorRH19.1013.186.8818.5710.3117.1935.76FrontDoorLH19.1013.186.8818.5710.3