列車(chē)大變形碰撞仿真與結(jié)構(gòu)優(yōu)化.pdf

1、大連交通大學(xué)碩士學(xué)位論文列車(chē)大變形碰撞仿真與結(jié)構(gòu)優(yōu)化姓名：段書(shū)華申請(qǐng)學(xué)位級(jí)別：碩士專(zhuān)業(yè)：車(chē)輛工程指導(dǎo)教師：陳秉智王悅東20081219大連交通大學(xué)：l==學(xué)碩十學(xué)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