基于性能驱动的微型纯电动车车身设计与优化

《基于性能驱动的微型纯电动车车身设计与优化》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、硕士学位论文AbstractThebodystructureoftheminielectricvehiclearedifferentformtheconventionalones,andthisdifferencewillinevitablyleadtodifferentdevelopmentmethodofbodystructure.Accordingtothecharacteristicsoftheminelectricvehiclebodyminiaturization,lightweig

2、ht,thispaperformsarapiddesignanddevelopmentsystemprocessofminelectricvehiclebodybasedonperformanceandlightweightdrivenbylearningthemoderncarbodystructuredesignmethodandrelevantcommercialsoftwaretools,researchingthecarbodystructuredesigncriteriaandpro

3、cessbasedperformancedriven.Anexampleofabodydevelopmentofaminelectricvehiclebodywasputintopractice,andhadachievedgoodresults.Theformsoftheminielectricvehiclesbodystructureandthelightweighttargethavebeeninvestigatedbeforethebodydesignanddevelopment.The

4、minielectricvehiclebodytopologyoptimizationspaceisestablishedonthebasisoftheoverallsizeandmodeling.Byusingequivalentstaticloadmethodtogetdisplacementaveragecollisionforce,thenonlineardynamicconditioncanbeconvertedtostaticcondition.Thetopologyoptimiza

5、tionintypicalloadcasesincludingvariousimpactcondition,toppressure,variousstiffnessconditionforthenewminielectriccararecarriedouttogetthemainloadtransferpathofthebody.Theoptimizationresultsshowthatthefront,side,roof,floorandothermajorareasofthebodyfor

6、medaclearandreasonabletopologyoptimizationstructure.Thegeometricwireframemodeloftheconceptframestructureofthebodywasestablishedonthebasisoftopologyoptimizationresultanddesignexperience.Andthenthecarbodymodelofone-dimensionalbeamelementwithsectionprop

7、ertieswasbuiltandthecross-sectionparameterwasoptimizedtolightweightthecarbody.Accordingtotheoptimizationresultadetailedfiniteelementmodelwascreated.TheperformanceofthecarbodywasanalysedandevaluatedbasedonFEMmethod,includingtorsionstiffnessandbendstif

8、fness,alongwiththelevelofbodylightweight.Theresultshowthatthecoefficientoflightweightcarbodywas4.0whichwaslowerthanthetargetvalueandmetthedesignrequirements.Sothemethodtopologyoptimizationandcross-Sectionparameteroptimizationfortheminielectriccarbody