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1、江蘇大學碩士學位論文AbstractWiththeincreasingofvehiclepopulmionandtherelativelagroadtraffic，seriousenvironmentalproblemssuchastrafficcongestionandemissionsweresoseriousthathasaffectedthepeople’Slivingenvironment．Savingresources，reducingenvironmentalpollutionhavebecometwomajorprob
2、lemstobesolvedinOurcountry．Accordingtostatistics，fuelconsumptionCanreduce6-8％whentheweightofacal"lighted10％．WithaViewtolong-termsustainabledevelopment，greentravelwasadvocated．Themissionoflightentheweightofthecal"andlowerfuelconsumptiontoreduceemissionspollutionwasSOurge
3、nt，andenergysavinghasbecomethecoreissueoftheautoindustrydevelopment．Developingnewlightweightcitybuswasoneofthefullystaffedways．Andit’Stheforefrontandhotspotincurrentresearchoftheautomotivetechnology．Toacoachbus，thebusbodyweightby40％to60％ofacoachbus’Stotalweight．Busbody’
4、SlightweightplaysanimportantroleinlightingthewholeCar．Baseonamodeloffullyintegralbusbodyframestructure，anewlightweightoptimizmionwasdesignedinthisarticle．Firstofall，ImportedBasedCADmodelintothehypermeshsoftware，simplifidtheofbusbodytructureandandhandledrelevantloadsacco
5、rdingtoactualengineeringexperienceandrelevantliterature．Finallyestablishedthefiniteelementmodel，andanalyzetheperformance．Secondly，maketopologyoptimizationtothebasicmodel，anddirectthedesignofthebodystrucrureaccordingtotheresults．Thenmakesizeoptimizationonthebasisofthestr
6、uctureaftertopologyoptimization．Determinethestructures’detaileddesignparametersaccordingtothesizeoptimizationresults，andfinallygetthelightweightbodystructureafteroptimizmion．Intheend．Analysisandcalculatetheperformanceoftheoptimizedfullmonocoquebodystructureunderconditio
7、nsoffourkindsofextreme，compairingtheperformanceofthefullmonocoquebeforeandafteroptimized，ExpectachievethegoaloflightweightoptimizationdesignandgetthelightweightbodyframestructureCallmeetthestructureperformance．III全承載式客車車身結構輕量化優(yōu)化設計Keywords：Finiteelement，Fullyintegral，Top
8、ologyoptimization，lightweightIV江蘇大學碩士學位論文目錄第一章緒論???????????????????????????????11．1選題的背景與意義???????????????????
