汽車碰撞安全性設(shè)計與改進技術(shù).pdf

1、湖南大學(xué)博士學(xué)位論文汽車碰撞安全性設(shè)計與改進技術(shù)姓名：張維剛申請學(xué)位級別：博士專業(yè)：車輛工程指導(dǎo)教師：鐘志華楊濟匡20020101ABSTRACTABSTRACTV曲iclepassiVesafetyissueisabigandu唱entproblemforworldwideautomobileindustrytosolveassoonaspossibleNotonlydidthecrashaccidentsbringgreatecon

2、omicaI10sstohumansocie也butalsokilledhundredsofthousandsiImocentpassengersThebasicappmachofprotectingpeoplefjombeinghurtorkiIledina11accidentistoimproVecmshworthinessofVehiclesThispaperstanswithdiscussingtheo“esandmethods

3、forvehiclepassivesafetydes培n，whichincludedexperientialmethods，anaIyticmethods，multi_bodydyn鋤icsmethods，crashtestmethodsandthefiniteeIementmethodEmphasiswillbepaidtothebaSicFEMtheoriesandalgorithmsofimpactproblemsTbpicsdi

4、scussedincIudemegovemingequation，elementdiscretization，hou唱lasscontrol，timeintegration，materiaJmodelshellelementalgoritlmsandcomactimpactalgorimmsFormorereliablesimulationresults，thi8p印erthenconductsstudyonhowtoaccuratel

5、ygetmaterialmodelparametersbycombiniIlgtheFEMmethodwimexperimentalmethod：anddevelopsreleVantmaterialteStmachinea11dparametercalculatingsoRwareBaSedonthat，basictypicalimpactsimulationandtestvalidationstudyareconductedOnth

6、ebasisoftheaboVework，thepapefstudesthethin—shellstmctures’craShworthirless，Whichwasafrcctedbythefollowingfactors：spot—weldfeatures，sheUthicklless，crosssectiona11dpre—defonnationAstovehicleparts’crashworthiness，thep印ercor

7、lductssimulationstudyofdesigningenergy—absorbingsteeringsystemandadaptiVeairbagsystemApracticalenergy—absorbingsteeringwheelisdesignedasanexampleIn舒merdepthresearch，thepapersuggestsseveralinVersequantificationalmethodsfo

8、rVehiclecrashwonhinessdes適nbaSedontheidealcrashcharacteristicsT11eaboVemeoriesandmethodsareappliedwithgoodresultst11rou曲seVeralpmcticalVehicles’crashworthinessdesignandimprovementKeywords：VehicleCrash、vorthinessdesigntec