面向轻量化的高速动车组构架结构优化-研究

《面向轻量化的高速动车组构架结构优化-研究》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、万方数据西南交通大学硕士研究生学位论文第ll页AbstractAfterthesixthacceleratingspeedofnationalrailway,high-speedrailhasenteredthestageofrapiddevelopment．Asubstantialincreaseinthespeedofthetrainshasputforwardhigherrequirementsoneachpart．Asthekeycomponentofthetrain，bogieframestructureshouldhavehigher

2、reliabilityandlightweightstructure，butthereisacertaincontradictionbetweenthetwoaspects．Sohowtogetalightweightstructuredesignwithhighreliabilityhasanimportantsignificance．Inordertorealizethelightweightdesignofframestructure，choiceofspacestructureoptimizationdesign，structuralre

3、liabilityassurance，materialuseefficiencyandotherkeyissuesarestudiedinthispaper．Firstofall，thispaperdrewuptheprincipleofdesignspacedeterminationmethodbasedonthebogieflamedesignmethodandthenformulatedthespaceexplorationprocessaccordingtotheaboveprinciple．Variableselectionofthes

4、tructuraloptimizationismorereasonablebyusingtheprocess．Forthelackofconstraintsduringtheoptimizationdesign，thispaperproposedtotakestructuralstiffness，strengthandfrequenciesasconstraintsofthestructuraloptimizationandrealizedareasonabledescriptionofframeworko砸mizationconstraints

5、toensurethereliabilityoptimizationresultsbasedonframedesignprinciple．Atlast，inordertorealizetheuniformstrengthdesignrequirement，thispapertookvariablecross．．sectiondesignintotheoptimizationdesignofframestructure．Theweldedplatewasdesignedtobedifferentthicknessplatetoimprovetheu

6、seofmaterials．Thispapertookahigh—speedEMUpowerbogieframeasanexample，realizinglightweightframestructuredesignundermultipleconstraintsbyusingoptimizingsoftwareOptistruct．Bythecomparisonofrelatedparametersfortheoptimizedframeandtheoriginal，itisshownthatattheSalTletimeoflightweig

7、htdesign，theoverallstressdistributionis1Tloreuniform，thematerialuseismorefullyandprovidesamethodcallbeusedforhighspeedEMUframelightweightdesign．KeyWords：Bogieframe；structureoptimization；lightweight；designspaceexploration；variablecross-sectiondesign万方数据西南交通大学硕士研究生学位论文第1Il页目录第l

8、章绪论⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯11．1课题研究背景及意义⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯