AHSS先进高强度钢在中级轿车及SUV平台上的应用资料下载.pdf

AHSS先进高强度钢在中级轿车及SUV平台上的应用资料下载.pdf

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385kgSedan:

300kgBaseline:

NAmarketrepresentativeMid-sizevehicleScope:

BIW+Bumpers+doorinwhiteObjective:

achievea20%weightreductionatverylowcostdifferencethankstoadvancedhighstrengthsteelsSUV:

522kgSUV:

420kgRoofCrush40%Frontal25%FrontalSideMDBSidePoleRear4ArcelorMittalproductsusedinthisprojectArcelorMittalcurrentlyavailablegradesEssentiallyAHSSgradesDualPhasefamilyComplexPhasefamilyUsibor1500Laserweldedblanks（especiallyUsibor1500/Ductibor500）MartINsitefamilyuptoMartINsite1700AndalsoDP490ExposedArcelorMittalemerginggradesportfolioNewhot-stampinggradesUsibor2000,Ductibor1000HighformabilitygradesFortiform980and1180（980HF,1180HF）MartINsite2000Tensilestrengthvalues2setsofsolutions:

onewithcurrentgrades,onewithemerginggrades5NAMid-sizeSedanBenchmarkingBenchmarkedvehiclesrepresent60%of2013USMid-sizesales（5oftop6sellers）Source:

FusionAccordMalibuCamryAltima6NAMid-sizeSedanBenchmark&

Solutions7NAMid-sizesedansBIWweightwithoutCMS*vsCurbWeightAluminumintensiveBIWVehiclecurbweight（kg）BiWweight（kg）（note:

nosecondarymasssavingswereconsideredforthesolutionvehicles）TheproposedBIWsolutionsareveryclosetoaluminumintensiveBIW.S-inmotionMid-sizeSedanbaselineS-inmotionMid-sizesolutionsSource:

*CMS=CrashManagementSystem（bumperbeamandcrashboxes）NAMid-sizeSedanBenchmark&

BaselineHondaAccordSOP2012NissanAltimaSOP2012S-inmotionMid-sizeSedanbaselineBIWmaterialbreakdown35%AHSS+PHSFordFusionSOP2013Source:

BaselineisinlinewithcurrentNAMid-sizeSedanBIWs（35%AHSS+PHS）.BenchmarkedmaterialbreakdownvaluesarebasedonA2Mac1materialanalysis8Tensilestrengthvalues33%AHSS+PHS31%AHSS+PHS39%AHSS+PHSNAMid-sizeSUVBenchmark&

SolutionsTheproposedBIWsolutionweightisclosetoaluminumintensiveSUVBIW.Explorer（4x2）2011GrandCherokee（4x4）2014Traverse（4x4）2011Highlander（4x4）2013PilotPathfinder（4x4）2014Source:

NAMid-sizeSUVBIWs9BiWweight（kg）Footprint（m2）PHSintensiveluxurySUVAluminumintensiveluxurySUVSUVbaselineS-inmotionMid-sizeSUVsolutionBaselineSUVRepresentation:

BIW+CMS*Mid-sizeSUVBaselineTheS-inmotionBaselineconsiderstheincreaseinAHSSusebetween2010and2015andthereforerepresentscurrentstateoftheart（33%AHSS+PHS+MS）.SOA2015:

33%AHSS+PHS+MSFordExplorerSOP2010JeepGrandCherokeeSOP20101016%AHSS+PHS+MS8%AHSS+PHS+MS*CMS=CrashManagementSystem（bumperbeamandcrashboxes）Mid-sizeSedan/SUVPlatformS-inmotionMid-sizeSUVGuidelinesModularapproachinregardtotheMid-sizeSedanTypeofbody:

unibodyWorstcasefortransmissionchoiceinonemodel:

oNoprop-shaftpresentforamoresevereintrusionsscenarioo4x4transmissionmassconsidered25%ofunderbodymassoftheSUVSolutioniscarriedoverfromtheSedanSolutionunderbody86/241partsTransparentwhite:

specificSUVpartsGreen:

100%SedanC/OBlue:

ScaledSedanparts（wheelbase+90mm）S-inmotionMid-sizeSUVS-inmotionMid-sizeSedanTheS-inmotionMid-sizeSUVmodelwasbuiltasaplatformextensionoftheS-inmotionMid-sizeSedan.11Bandwidthstudyon200kgheaviervehicleAtypicalMidsizebandwidthisabout200kgcomparinglightestI4FWDtoPHEVorAWDversionMasswasaddedonengineandrearstructureofS-inmotionMid-sizeSedanFEMtosimulateheaviestvehicleBaselineSolution+200kgSolution+200kgPerformancesonmajorcrashloadcasesarerestoredwithlocalreinforcements（+3.7kg）.NoreinforcementrequiredtomeetperformancetargetUsibor1500patchblanksup-gaugedorextendedNewsidesillreinforcementsCross-memberpatchblankextendedShotgunthicknessincreasedNoreinforcementrequiredtomeetperformancetargetRoofcrush+0.2kgSORB+3.5kgREARSIDEMaximumplasticstrainof9%infueltank（target450MPa-7.8kgMartINsite170011.7kgDP9809.6kgDP590-15.4kgDP490exposed8.5kgHSS37.9kgMildSteel-71.1kgDP780andHR780FC5.5kgTensilestrengthvalues19SedanEmergingSteelGra