某型車身底部防護(hù)結(jié)構(gòu)改進(jìn)及優(yōu)化技術(shù)研究.pdf

1、聲明本學(xué)位論文是我在導(dǎo)師的指導(dǎo)下取得的研究成果，盡我所知，在本學(xué)位論文中，除了加以標(biāo)注和致謝的部分外，不包含其他人已經(jīng)發(fā)表或公布過的研究成果，也不包含我為獲得任何教育機(jī)構(gòu)的學(xué)位或?qū)W歷而使用過的材料。與我一同工作的同事對本學(xué)位論文做出的貢獻(xiàn)均已在論文中作了明確的說明。研究生簽名：和lr年]1月tVE]學(xué)位論文使用授權(quán)聲明南京理工大學(xué)有權(quán)保存本學(xué)位論文的電子和紙質(zhì)文檔，可以借閱或上網(wǎng)公布本學(xué)位論文的部分或全部內(nèi)容，可以向有關(guān)部門或機(jī)構(gòu)送交并

2、授權(quán)其保存、借閱或上網(wǎng)公布本學(xué)位論文的部分或全部內(nèi)容。對于保密論文，按保密的有關(guān)規(guī)定和程序處理。研究生簽名：碩士學(xué)位論文壘!竺型一——————————————————————————————一AbstractLandInineexplodedinthebottomofthevehiclewhichCarltearthecarbodYstmctureandmake位fr啦ent，shockwave，poisonousgasintothec

3、arAlso，thedeformatlonofthecarbodvstnlctl】re，me仃aIlsientacceleratedspeedandplusloadcancausegreatdamagetOthepaSsengersTherefore，t0calryouttheresearchontheprotectionofthebottomofthebodYstructureisofgreatsignificance111thisp

4、aper，combinedwiththeoreticalanalysis，simulationandmultiobjectlVeoptimizationdesign，bottomprotectionofacertaintypeofcarbodyS蟣燭玳匝d111dooroccupantwaScarriedoutbythetransientresponseoftheexplosionshockwaVeenvlr0眥ent，andinlpr

5、ovedandoptimizedthebodyprotectionstructureatthebo怕motmec缸Tov麗fytherationalityofthesimulationalgorithmandkeycontrolparameters也rou馳impacttestfieldofmineexplosion，andintroducedseveralkindsofsimulationA190ntllmsotsheII咖咖eund

6、ertheenvironmentofexplosionshockwavescompanngtheadV紕ges趾ddisadvantagesofeachsimulationalgorithmwiththeoreticalanalysisIntroducedi皿teelementmodelingprocessofbodyandflamemodelofbodyandframemodel1111derlan咖1neexplosionenVir

7、o衄ent，analyzedthesimulationresultsfromthedamagefonllofbodYstructureanddummyCombined塒t11theactualresearchofmodelstructure，analyzedthecurrentmainstre眥ofseveralkindsofprotectionschemeFinallyputforwardakindofVsandwichstrucn玳

8、111enc硎edoutmultiobjectiveoptimizationdesignofVsandwichstructureWi也0ut她yincreaSeinthemaSsofstructure，furtherimprovedtheshockresistanceperformanceUonealocalimprovementonthebasisoftheoriginalbodystructure，andcamedoutnumenc

9、als油ulationoftheimprovedprotectionatthebottomoftheCarbodystructureand廿leoptiIllizedexplosionprotectionatthebottomofthecarbodystructureTheresultsshow也atmecarbodybottomprotectionperformancewasgreatlyincreasedKeyword：expl。s