高速動力車碰撞模擬研究.pdf

1、西南交通大學碩士學位論文高速動力車碰撞模擬研究姓名：胡小偉申請學位級別：碩士專業(yè)：車輛工程指導教師：肖守訥2001.4.1西南交通大學研究生學位論文ABSTRACTTheprogressofthecrashworthinessofthetrainisdescribedinthispaperThecircumstanceofaccidentsaregainedthroughanalyzingthestatisticsofthefielda

2、ccidentsTheaccidentofthecrashworthinessisoneofthemajorcauseoftheBeveredamageofvehiclesandthepersonalinjuriesFirstimpactandsecondimpactoccurduringthecrashworthinessTheformarcausesthemainstructuraldamageofvehiclesasaresult

3、ofit，thecoachspaceisdecreasedandthepassengersorcrewarecrushedThelattarjsaresultofthefirstimpactThedifferentiationofthevelocitybetweenpassengersandvehicleorinotherwords，therelativemotionbetweenpassengersandvehicleishappen

4、edThepassengersmaycrashwiththeinnerstructureofthevehicleortheyarecasttedoutthevehicleThemeasuretosolvetheproblemistointroducetheenergyabsorbingelementsinthefrontofthemajorstructureTheenergyabsorbingelementsarecollapsedan

5、dabsorbedmuchenergyofthecrashworthinessimpactItprotectnotonlytheframeofthevehiclebutalseducethepersonalinjuryduringthesecondimpactThevehiclecrashworthinessduetotraincollisionhasbeingstudiedthroughtheimpactingtestandcompu

6、tersimulationinforeigncountriesManypeoplebegintostudythecollisionofthetraininChinaLS—DYNAffiniteelementsoftware)isatooltosimulatetheactionofthecrashworthinessofthecabofthehigh—speedpowercarInthispapervarietyoftheforceene

7、rgyaccelerationandvelocitydependedonthetimehasbeenreceivedOnthisbase，energyabsorbedelementsaredesignedThedifferentiationofthevarietyoftheforoe，energy，accelerationandvelocitydependedonthetimeoftrainequippedwiththeenergyab

8、sorbingstructureshasbeengainedtooItcanbereceivedthatthevehicleequippedwiththeericrgyabsorbingelementscanreducecollapseofthevehicleobviouslyThesuperiorellCrgyabsorptionstructurescanimproveeffectivelytheanti—collisionperfo

9、rmanceofvehiclesMeanwhile，thispapercomparescollapsibleperformancesoftubesThislaysatheoreticaIfoundationforthedesignofenergyabsorptionstructuresKeywordslocomotiveandvehiclecrashworthinesscomputersimulationenergyabsorption