某型车身底部防护结构改进及优化技术研究.pdf

1、声明本学位论文是我在导师的指导下取得的研究成果，尽我所知，在本学位论文中，除了加以标注和致谢的部分外，不包含其他人已经发表或公布过的研究成果，也不包含我为获得任何教育机构的学位或学历而使用过的材料。与我一同工作的同事对本学位论文做出的贡献均已在论文中作了明确的说明。研究生签名：和lr年]1月tVE]学位论文使用授权声明南京理工大学有权保存本学位论文的电子和纸质文档，可以借阅或上网公布本学位论文的部分或全部内容，可以向有关部门或机构送交并

2、授权其保存、借阅或上网公布本学位论文的部分或全部内容。对于保密论文，按保密的有关规定和程序处理。研究生签名：硕士学位论文垒!竺型一——————————————————————————————一AbstractLandInineexplodedinthebottomofthevehiclewhichCarltearthecarbodYstmctureandmake位fr啦ent，shockwave，poisonousgasintothec

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

4、aper，combinedwiththeoreticalanalysis，simulationandmultiobjectlVeoptimizationdesign，bottomprotectionofacertaintypeofcarbodyS虮烛玳匝d111dooroccupantwaScarriedoutbythetransientresponseoftheexplosionshockwaVeenvlr0眦ent，andinlpr

5、ovedandoptimizedthebodyprotectionstructureatthebo怕motmec缸Tov丽fytherationalityofthesimulationalgorithmandkeycontrolparameters也rou驰impacttestfieldofmineexplosion，andintroducedseveralkindsofsimulationA190ntllmsotsheII咖咖eund

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

7、o衄ent，analyzedthesimulationresultsfromthedamagefonllofbodYstructureanddummyCombined埘t11theactualresearchofmodelstructure，analyzedthecurrentmainstre眦ofseveralkindsofprotectionschemeFinallyputforwardakindofVsandwichstrucn玳

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

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