1、南京理工大學(xué)碩士學(xué)位論文某特種車輛艙體結(jié)構(gòu)的有限元分析與優(yōu)化姓名：劉曉梅申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：機(jī)械電子工程指導(dǎo)教師：徐誠(chéng)20070705ABSTRACTThisthesisfocusesoiltheresearchoftheworkingcabinofonespecialvehicleBasedOndiversifiedworkingconditions，thewholecabinismodeledbyfiniteelement；me

2、anwhile，inordertoveri句thefeasibilityofthedesign，thestaticanalysis，modalanalysis，aswellaslransientrespoⅡseanalysisofthemodeliscarriedout耐山FEAmethodThen，topologyoptimizationoftheoverheadequipment013eofthecrucialpartsofthec

3、abin，isperformedteduceweightThemaincontentsareasfollows：1BasedOiltherealmodelandworkingstatusofthecabin，thethreedimensionalsofidmodelhasbeenlogicallysimplifiedwithHyperMesh，includingchassisframework，overheadequipmentbrac

4、ket，uprightcolumn，cabincompositeboardandmaintenancerig，etcThenthecomplexsttllCtlll℃ismodeledbyfiniteelement2Utilizingthefiniteelementmodelabove，thestaticstrengthandrigidityofthecabinareanalyzedseparatelyinsixdifferentsub

5、casesbythesoftwareMSCNasmanandstles$anddisplacementparametersofthekeypartarcobtained，whicharevaluabletothedesignMoreoverconsideringtheresultobtainedsomeusefulsuggestionsa∞proposed3Chassisframeworkandoverheadequipmentbrac

6、ketalemodifiedNaturalfrequencyandvibrancyaregainedbymodeanalyzedofthestructural，whicharcchieflyconcernedbyengineersBesides，Iransientresponseanalysisofthemodelisimplemented，andtheconclusionsdemonstratethattherigidityofthe

7、partialslauctureisweakAfterimprovingtheslxucturalandcalculatingthemodelagaintileresultproofsthepracticabilityofthedesign4AccordingtotheresultobtainedaboveoverheadequipmentbracketarcmodeledthirddinesTopologyoptimizationof

8、theoverheadequipmentisallalyz州inordertolightentbeweightComparingwithitsmechanicalpropertiesforeandafteroptimizationthecolx：lusionilldicatlesthattopologyoptimizationCallprovidepreciousdesignconsiderationsinlightingweighto