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1、黑龙江工程学院本科生毕业设计附录AThesignificanceoflightweightAutomotivelightweightmainguidingprinciple:toensurestabilityonbasisofimprovedperformance,energy-savingdesignoftheassemblypartscontinuousoptimizationmodelspectrum.Thelightweightcar,thecaristoensurestrengthandsecurityofthepremise,asfaraspossibletoreduc
2、ethecar'scurbweight,therebyenhancingthecar'spower,reducingfuelconsumptionandreduceexhaustpollution.Experimentsshowthatif10%ofautomobileweightreduction,fuelefficiencycanbincreasedby6%-8%;vehiclecurbweightisreducedby100kghundredkilometerscanbereduced0.3-0.6liters;1%ofvehicleweightreduction,fuelc
3、onsumptioncanbereduced0.7%.Atpresent,duetotheneedforenvironmentalprotectionandenergysaving,lightweightcarhasbecometheworldtrendofautomobiledevelopment.Lightweightcaristhemainway:①mainstreamcarmodelscontinuetooptimizethesize,specificationsizetoretainthemainparametersofthepremise,toenhancethestr
4、ucturalstrengthofthevehicle,reducingtheamountofsupplies;②useoflightweightmaterials.Suchasaluminum,magnesium,ceramic,plastic,fiberglassorcarbonfibercompositematerials;③Thecomputerdesign.Suchasfiniteelementanalysis,localreinforcementdesign;④theuseofload-bearingbody,thinningthethicknessofthebodys
5、heetmetal.Amongthem,thecurrentmajorautomotivelightweightmeasuresmainlytheuseoflightweightmaterials.forautomotivelightweightdesignofthemetalmaterialThemainvehiclethroughthecar'slightweightmaterialstoimproveeconomytocontribute.Theoreticalanalysisandexperimentalresultsshowthlightweightistoimprove
6、vehiclefueleconomyandeffectiveway.Inordertoequirementsoflightweightvehicles,somenewmaterialemergedandexpandedthescopeofapplication.NonferrousAlloysTopassengercars,the1973vehicleusedbythenon-ferrousalloyofthetotaltimberweightratioof5.0%in1980to5.6%,whilein1997itreachNon-ferrousalloysinautomotiv
7、eapplicationsistherapidgrowthtrendofdevelopmentofautomotivematerials.AluminumSteelaluminumdensityofabout1/3isthemostwidelyusedlightmaterials.UnitedStatesproductionofautomotiveproducts,forexample,aluminumalloy1976pervehicleisonly39kg,198
