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1、MaterialSelectionForAutomotiveSpaceframeMaterialSelectionforAutomotiveSpaceframesAluminumusageinautomobilesandlighttruckshasbeenclimbingsteadily.Evenmoreimportant,automanufacturersarebeginningtoseealuminumthewayaircraftmanufacturersdo-asthebasicstructuralmaterialfortheirvehicles.I
2、ncreasingly,inthecaseofcarmakers,thatthinkingbeginswithanaluminumbodystructuresuchasthespaceframe.It'sanewandpotentiallypowerfultrend.Asrecentlyas1990,therewerenoaluminum-structuredpassengercarsinproductionanywhereintheworld.TheclosestthingwastheHMMV(Hummer),atthattimestrictlyamil
3、itaryvehicle.Asof1997,thereweresevenaluminum-structuredpassengercarsinproduction.Forthreeofthem-AudiA8,PlymouthProwler,andGMEV-1-Alcoahasbeentheprincipalpartnerindesigning,engineeringandmanufacturingaluminumcomponents,subassemblies,and-inthecaseoftheProwler-theframeitself.Andthat'
4、sjustthebeginning.AconceptcarwithamodularspaceframeintechnologyreviewsheldforFordandChrysler,Alcoaunveiledavehicleconceptembodyingideasforfuturecarsandlighttrucks.ThedesignisbasedonaspaceframestructurecomparabletothoseAlcoahashelpedtodevelopfortheAudiA8andPlymouthProwler.Butinthec
5、onceptvehicle,thespaceframeismodular,asteptowardusingsuchstructuresinabroadrangeoffuturevehicles.Bychangingmodules,acarmakercouldproduceasedan,asportutilityvehicle,andapickuptruck,allfromasingleproductionplatform.NewprogramswithDaimler-BenzandChryslerAlcoaisproducingthefrontenergy
6、managementstructureforthenewMercedes-BenzA-classcar(above)nowsellinginEurope.This11-piecestructurewasdesignedbyAlcoaandisroboticallyassembledatAlcoa'splantinSoest,Germany.Productionvolumeisexpectedtoreach1,000unitsperday.ForChrysler,analuminumrearcrossmemberdesignedandmanufactured
7、byAlcoaimprovesthehandlingandnoise-vibration-harshnessperformanceoftheall-new1998DodgeIntrepidandChryslerConcordeaswellasthe1999ChryslerLHSand300Mmodels.AASwillmanufacture270,000unitsperyearatitsNorthwood,Ohioplant.Somethingnewaroundthewindshield.Akeyadvanceincorporatedinthe1997Co
8、rvetteisafirst-of-its-kindwindshi
