基于虚拟碰撞试验分析燃料电池轿车车身结构的安全性.docVIP

基于虚拟碰撞试验分析燃料电池轿车车身结构的安全性 第6卷第1期 2006年2月 安全与环境 JournalofSafetyandEnvironment Vo1.6No.1 Feb,2006 空爆结果; 襄2超压对人员的杀伤半径和安全距离 Table2Injuredandsafedistanceofoverpressureversuspersons 炸药量及车型 注:实验条件同表1 2)计算得到了此次实验中冲击波超压对人员的杀伤半径 和最小安全距离,对汽车爆炸案件具有一定指导作用. 本文对炸药在汽车内外爆炸产生的冲击波超压的分布情 况进行了初步研究.对冲击波在车内的反射还需要进一步的 探索. References(参考文献J: [1]TANGJianzeng(唐建曾),Experimentalstudyoildynamicloadingof shockwavo0nstructureandequipmentlJJExperimentsand ^nure,ntsinMidMchunics(流休力学实验与测量),2000,14 (3):4246 [2]LIYiqi(李冀祺).MASuzhen(马索贞).Explosionmechanics(爆炸 力学)[M],Beijing:SciencePress.1992. [3]ZHONGYipeng(钟一鹏),HUYada(胡雅达),JIANGHongzhi(汀 宏志).Handbookofforeignexplosivescapability(国外炸药性能手 册)[M].Beijing:OrdnanceIndustryPress,1990. Researchonmonitoringoverpressureofcar bombs ZUOJian—jun,ZHANGGuang—xiong,YANGJun (StateKeylal~ratoryofExplosionScienceandTechnology,Beijing InstituteofTechnology.Beijing10008l,China) Abstract:Thispaperaimstoin~oducetheauthorsresearchonthe regularityoftheoverpressuredistributionwhenavehicleisexploded. Inourexperimentaltests,wehavetestedthevalHeoftheoverpres— sureproducedbydifferentaulourltsofexplosivesbothinoroutofa vehicle.Ietestingsystemconsistsofpiezoelectricity—pressuretrans— ducer,DHF一4chargeamplifier,TEKTDS654Coscillographandhigh impedancecoaxia1cable.Ieexperimentalresultsshowthat.when vehiclesareexploded.theoverDressHrewouldsoonbegettingattenu— atedquicklywiththepressurenearthedoorsbeingevidentlyhigher thanatthebackofthecar,theexperimentsalsoprovethatoverpres— sureoutsidethevehiclesisalsorelativelyhigherthanthatintheopen air.Withthefofillerbeingabout1.O一2.2timeshigherthanthelat ter.whichprovesthatthereflectionofshockwaveisactuallymoreev— identthantherestrictioneffect.Onthebasisofdataanalysis,we Ilavediscoveredfromtheexperimentthedamageradiusforhumanbe— ingandthelcastsafetydistanceofshockwavetohumanbody,which canbetakenasareferencetodealingwithcar-blastaccidents.At thesametime,thereflectionofblastwavecannotbeneglected, whichcallbeseenfromthetruckstest,theover.pressureisalso