基于正面碰撞某微型客车结构优化与料厚匹配-研究

《基于正面碰撞某微型客车结构优化与料厚匹配-研究》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、江苏大学专业硕士学位论文ABSTRACTAccordingtorelatedstatisticsfoundthatfullfrontalcrashaccountedforabout50％inthenumerousaccidentscausedbyavehiclecollision．Soithasimportantsignificancethatresearchthe100％fullfrontalcrashinvehicledevelopmentprocess．Withtherapiddevelopmentofcompu

2、terhardwareandmaturityoffiniteelementtheory,CAEtechnologyasaneffectivedevelopmenttoolarebeingappliedtostudyvehiclecrashworthinessbymoreandmoreresearchers．．Inthisdissertation，useallenterprise’Smini—busforthestudy,establishthefiniteelementmodelofthevehiclefullfron

3、talcrash，andtestthevalidityoftheFEMmodelbyrealCarcollision．Forthedummyheadinjuryistoohighincollisiontest，thestructureoptimizationandmaterialthicknessmatchingoptimizationwereproposedaboutthefrontendofthevehicle．(1)Buildthevehicle’Sfiniteelementmodeloffullfrontalc

4、rashinthepre—processingsoftwareHyperMesh，andelaboratethemodelingprocess．ThenthefmishedfmiteelementmodelWasoutputwithaformatofKfileandcalculatedbyimpactsimulationsoftwareLS-DYNA．(2)Analyzethecrashsimulationresultsfromthecollisionenergyabsorption，impactdeformation

5、，keypointsintrusion，doordeformationandunderB—pillaraccelerationcurve，respectively,inthepre-processingsoftwareHyperView．Andcombinetheanalysisresultsandthestateofmotionresearchondummyinrealvehiclecollision，provethattheaccelerationpeakvaluehasadirecteffectondummy’S

6、injury．Theresultprovidesareferenceforproposingthepost—optimizationscheme．(3)ProposefourdifferentstructureoptimizationmeasuresanduseLS—DYNAsimulationanalysis．Evaluatetheanalysisresultsfromthewholevehicleandfrontlongitudinaldeformation，thesteeringcolumnanddashpane

7、lintrusion，theaccelerationcurveofB—pillar，thereboundmomentofbodycollisionspeedandtherigidwallimpactforcecurve．Theconclusionwasthethirdoptimizationmeasurewasbest．III基于正面碰撞某微型客车的结构优化与料厚匹配研究(4)Forvehiclesfrontcrumplezonesproposeamaterialthicknessmatchingoptimizatio

8、n．CombineHyperMesh，LS-DYNAandHyperStudytosimulatevehicleimpactanduseHemmerslyDOE，approximatemodeltechniques．Forthedifferenttypesofresponseonthemasssumofdesignvariable