列車大變形碰撞仿真與結(jié)構(gòu)優(yōu)化.pdf

1、大連交通大學碩士學位論文列車大變形碰撞仿真與結(jié)構(gòu)優(yōu)化姓名：段書華申請學位級別：碩士專業(yè)：車輛工程指導(dǎo)教師：陳秉智王悅東20081219大連交通大學：l==學碩十學何論文AbstractAtpresent。thetrain’Shi曲一speedandsecurityissueschallengingthewholeworldarebecomingincreasinglyimportantIthasbecomeakeyprocessureo

2、fthesafetyanalysistOimprovethecrashworthinessofthetrainThecrashworthinessresearchesoftrainstructuremainlyfocusonthecollisionenergyabsorptioncharacteristicsofbothendsofthetrainSo，notonlyareasonableenergyabsorptingstructur

3、eistobe‘determinatedunderthepremiseofreductionoftrainbodyweightaSmoreaspossible，butalsothebodystructureistobeoptimizedasthecrewspaceguaranteedAllabove，inthisarticle，thegeneticalgorithmsbridgesthecollisionsimulationoftheb

4、odystructuredeformationandtheoptimizationofenergyabsorptionAndinterpretationasfollowing：Firstofall，bycompilingtheoutputfilesofHYPERMESHmodels，theAPDLlanguagehasbeenachievedwhichCanbereadbyANSYSInthelanguage，variablesandc

5、onstraintsinstatementsCanbeadded，theoutputCallbedefinedItalsodemonstrateshowthegeneticalgorithmbecomeavailablebyANYSYindetailsthroughthecompiledmodeloutputfilesThefeasibilityofgeneticalgorithmistestifiedbycomparingthegen

6、eticalgorithmoptimizationandANYSYoutcomesintheexampleofthecomplextrussstructurenleutilityofgeneticalgorithm雒abridgegenerallyimprovesmassivemultivariableoptimizationandreducesthesizeofcollisionenergyabsorptionoptimization

7、Second，trackvehiclecollisiontheoryandnonlinearfiniteelementsimulationofthekeyissuesalesummarized，movingsubwaycarsandcarcollisionsimulationmodelsareestablished，thecollisionsimulationon200kmhighspeedvehiclesandtheShanghaiM

8、etroLineNo68single，eventhetrailer(includingtheslowhookdevice)areaccomplishedGeneticalgorithmistobeappliedonthelargescalecollisionenergyabsorptionoptimizationontherequestoflightweightingofthehighspeedtrainbodyFinallyaccor

9、dingtOthetrussstructureoptimizationofvaffable—sizeanalysis，leadtolargescalegeneticalgorithmoptimizationexampleResearchthecarbonsteelcarbodyinordertostudyfortheoptimizeddesignbyanalyzingtheconditionofthreeofthestaticstren

10、gthoftheresultsextractedfromthedifferentdisplacementandstress嬲aconstrainttooptimizethevalueboundRespectively，compared、Ⅳitllthethreealgebraandthethreeconditionstooptimizethevalueofadaptabilitytakingthebestadaptationofaset