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1、ideal,thispaperproposesaconversemodelingmethodbasedonfeaturepointsofarealcar,afterselectingthekeyfactors,thispapercombinedCFDsimulationtechnologyandtheapproximationmethodofRSM,toestablishtheresponserelationshipbetweentheglobaldimensionsandtheaerodynamicdragcoe
2、fficient.Onthisbasis,theglobaloptimizationisfinishedwiththeapplicationofMIGA,andamodelwiththebestaerodynamicdragcharacteristicsisobtained.(3)Themainsoundsourceofthebodyisanalyzed,afteridentifiedthekeyaerodynamicnoisefactor,areliableresponsesurfacemodelofaerody
3、namicnoiseisbuilt.Basedonthis,theglobaloptimizationisconductedalsowiththeapplicationofMIGA,what’smore,theimpactofrearviewmirrorontheaerodynamicnoisecharacteristicsisanalyzed.(4)Thecollaborativeoptimizationmathematicalmodelofaerodynamicdragandnoiseisprovided,th
4、ebasicframeworkandtheworkflowareconstructed,andwiththehelpofthesoftwareofIsightwhichisanoptimizationplatform,themultidisciplinaryoptimizationofthecarbodyisrealized.Keywordsaerodynamicstyling,featurepoints,aerodynamicdragcharacteristic,theaerodynamicnoisecharac
5、teristic,collaborativeoptimizationIII万方数据目录摘要.......................................................................................................................IABSTRACT.......................................................................................
6、..................II目录..............................................................................................................IV第1章绪论..........................................................................................................11.1课题研究背景及意义..
7、...........................................................................11.2车身气动造型研究现状.........................................................................41.2.1低阻造型研究现状......................................................................41.2.2低噪造型研究现状
8、......................................................................51.3MDO研究现状及方法............................................................................61.3.1MDO国内外研究现状....
