高速列车车体断面优化设计

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1、operationoftrains．Inthispaper,thefiniteelementmodelofahigh—speedtrainaluminumalloyoarbodyisestablishedusingtheHypermeshsoRware．Itsstaticstrengthiscalculated，thecalculationresultsofthestructurestrengthandstiffnessareanalyzed,andmodalanalysisiscarriedout；Ta

2、kingthecarbodychassisastheresearchobject,thetopologicaloptimizationandsizeoptimizationarecarriedout．TheoptimumsectionconfigurationofCarbodychassisisdiscussed，andtheoptimizationresultsarevalidated．Themaincontentsareasfollows，1．SetupofthefiniteelementmodelD

3、uetocomplexityofthecarbodystructure，itissimplifiedproperlyandfiniteelementmodelofthecarbodyisbuiltinHypenneshsoftware．2．Smilestrengthandmodalanalysisofcarbody。AccordingtotheEuropeanCommitteeforStandardization,Railwayapplications·structuralrequirementsofra

4、ilwayvehiclebodies，theCarbodystrengthandmodeareanalyzedunderthefourdifferentworkingconditions．Thestressdistributionofthecarbodyissummarized．Simultaneously,thestiffnessofCarbodyisevaluatedaccordingto‘RailwayRollingStockDesignandTesttoIdentifyStrengthNorms(

5、TB／T1335-1996)’，whichprovideconstraintsconditionfortheoptimizationofcarbodychassis．3．StructureoptimizationofthecarbodychassisThecarbodychassisisoptimizedusingtheOptiStruetoptimizationsoftware．FirstofM1，thetopologicaloptimizationofCarbodychassisiscarriedou

6、tbasedontheconceptualdesign．Thecarbodychassis、历moptimumcross—sectionconfigurationisgotaccordingtothedesignrequirementsandoptimizationgoal．Onthebasis，themoredetailedsizeoptimizationiscarriedout,optimalsizesofthecrosssectionsareobtainedbasedontheoptimalobje

7、ctivefunction．Aftertheoptimization,thestaticstrengthofthecarbodyisanalyzedagainandthecalculationresultsofsmficstrengthanalysisbeforeandaftertheoptimizationarecompared．Keyword：Carbody；,Staticstrength；Topologicaloptimization；Sizeoptimization；Hypermcsh；OptiS

8、tmet究生学位论文第1II页录1．2高速列车车体轻量化的研究意义⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．31．3结构优化技术在铁道车辆中的应用⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．41．4课题研究意义．．⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．6第2章某型高速列车车体简介及有限元模型的建立⋯⋯⋯⋯．：⋯⋯⋯⋯⋯．72．1车体简介⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．72．1．1车体主要组成部分⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．72．1．2车体材