TNT空中爆炸超压的相似律-仲倩

TNT仲　倩,王伯良,黄　菊,惠君明(,210094)　:、TNT。,,。,5.3%,5.61%,。:;TNT;;;;:TJ55;O383　　　　　　:A　　　　:1007-7812(2010)04-0032-04StudyontheSimilarityLawofTNTExplosionOverpressureinAirZHONGQian,WANGBo-liang,HUANGJu,HUIJun-ming(SchoolofChemicalEngineering,NanjingUniversityofScienceandTechnology,Nanjing210094,China)Abstract:Apressuremeasurementsystemwithhighresolutionandprecisionwasemployedtomeasuretheshockwaveoverpressure(Δp)ofdifferentloadingdosesofTNTinfieldexplosiontests.Basedontheexperimentaldataandexplosionlaw,animprovedempiricalformuladescribingtheΔpvsrelativedistance(R-)relationwasproposed.Meanwhile,thenewformulaiscomparedwiththeexperimentaldatainthisexperimentandliteratureones.Theresultsshowthattherelativedeviationofthemeasurementsystemislessthan5.3%.Theaveragerelativedeviationis5.61%whichcomparedwiththeexperimentaldatainliterature.Thenewformulacanbeusedfortheevaluationandtheoreticalcalculationofexplosionpowerinthefuture.Keywords:explosionmechanics;TNT;shockwave;overpressure;relativedistance;similaritylaw　,。,TNT,TNT,TNT[1]。,TNT。Brode[2]Henrych[3],。[4][5],,。TNT。,,14bit,65MHz,,[6-7]。TNT,TNT,,,,。1　　1.1　。:2009-10-14;　:2010-04-13:(1981-),,,。:(1964-),,,。32　火炸药学报ChineseJournalofExplosives&Propellants33420108(),。,,,。,。,,1。,,,“”,,VXI,。PCB102A,PCB481A;VXI-1115,14,65M,。1　Fig.1　Measurementsystemchart1.2　TNT1m,,,3、4、5、6、8、12、14、17、20、2224m。1.3　　TNT,1、8、10、3035kg,1∶1,RDX,8。2　2.1　Brode[2]TNT:　Δp=0.657R-3+0.098Δp0.980.096R-+0.143R-2+0.573R-3-0.0190.0098≤Δp≤0.98(1):Δp,MPa;R-(R-=r/3W;r,m;W,kg)。Henrych[3]:　Δp=1.379R-+0.543R-20.035R-3+0.006R-40.05≤R-0.30.607R-0.032R-2+0.209R-30.3≤R-10.065R-+0.397R-2+0.322R-31≤R-≤10(2)Mills[8]TNT:Δp=0.108R--0.114R-2+1.772R-3(3)M.A.Sadovskyi[9],,:Δp=1.07R-3-0.1R-≤10.076R-+0.255R-2+0.65R-31R-≤15(4)TNT,[10]TNT:Δp=0.102R-+0.399R-2+1.26R-3　1≤R-≤15(5)[5]TNT:Δp=0.084R-+0.27R-2+0.7R-3R-≤10.076R-+0.255R-2+0.65R-31R-≤15(6)(6)M.A.Sadovskyi1m/kg1/3,。2.2　TNT,3。,,2。2,BrodeHenrych,Mills[5],R-2.5m/kg1/3,。R-,33　第33卷第4期仲　倩,王伯良,黄　菊,等:TNT空中爆炸超压的相似律,3m/kg1/3,。,:;,,、。2　Fig.2　ComparisonofthemeasuredveluesΔpwitheiteratureonesΔp,TNT,。2.3　2.3.1　计算原理　　,:Δp=x0+x1/R-+x2/R-2+x3/R-3+K(7),(7),,TNT。2.3.2　拟合公式,TNT,:Δp=-0.152R-+0.938R-2+2.019R-3R-≤2.50.172R--0.122R-2+2.414R-32.5R-≤20(8)2.4　2.4.1　相对偏差分析,,。,1(8)TNT。1,5.30%,2.65%,6.17%,5.62%。TNT,。1　TNTTable1　ErroranalysisoftheexperimentaldataandcaluclatedonesoftheTNToverpressureR-/(m·kg-1/3)Δp/MPa/%/%/%0.953545318233653187-5.2910.09-0.161.2714841285140014372.573.17-10.581.597977297467753.892.76-5.941.914894404604671.524.50-5.782.55215190203194-4.432.79-2.063.18120981101100.009.77-10.913.8289747776-1.3010.11-2.634.4671586562-4.838.33-6.455.4147424543-4.448.51-2.336.37343133330.002.94-6.067.00292628293.570.00-10.358.14272324240.0011.11-4.17　:,。2.4.2　与参考文献数据的比较,[11]TNT,[11]34火炸药学报第33卷第4期　,2。2,5.61%,TNT。2　Table2　ComparisonoftheexperimentalvaluesΔpwiththeexperimentalonesΔpinliteratureR-/(m·kg-1/3)Δp/kPa/%1.1619121860-2.741.864845033.962.502082185.053.4611098-11.094.007573-2.545.504642-9.246.303634-5.887.00262912.008.3523230.009.282120-4.1010.0018182.1912.6013148.3815.0011125.823　　(1),。(2)。,5.30%,2.65%。(3),5.61%,TNT。致谢:感谢范能跃、房莹莹、王凤丹等对本实验的帮助。:[1]　.()[M].:,1979.[2]　BrodeHL.Blastwavefromasphericalcharge[J].PhysFluids,1959(2):217.[3]　HenrychJ.TheDynamicsofExplosionandItsUse[M].Amsterdam:Elsevier,1979.[4]　,,,.MATLABFAE[J].,2004,24(3):306-308.YUJin,PENGJin-hua,ZHANGTao,etal.FormulafittingtooverpressurecalculationofFAEwarheadinMATLAB[J].JournalofProjectiles,Rockets,MissilesandGuidance,2004,24(3):306-308.[5]　,.TNT[J].,2008(2):15-19.YANGXin,SHIShao-qing.ForecastandsimulationofpeakoverpressureofTNTexplosionshockwaveinair[J].Blasting,2008(2):15-19.[6]　,,.TNT、PBXHexel[J].,2008,31(6):42-44.WANGJian-ling,GUOWei,FENGXiao-jun.ExperimentalresearchontheairexplosionshockwaveparametersofTNT,PBXandhexel[J].ChineseJournalofExplosivesandPropellants,2008,31(6):42-44.[7]　MuzychukE,MayselessM,BelskyI.Influenceofthepost-detonationburningprocessonblastwaveparametersinair[C]∥22ndInternationalSymposiumonBallistics.Canada:DestechPublications,2005:536-543.[8]　AhmedFahmyFaragTolba.ResponseofFRP-Retro-fittedReinforcedConcretePanelstoBlastLoading[D].Canada:CarletonUniversity,2001.[9]　SadovskyiMA.Mechanicalactionofairshockwavesofexplosion,basedonexperimentaldata[M].Moscow:IzdAkadNaukSSSR,1952.[10],.[M].:,1995.[11],.FAE[J].,2004(3):176-181.ZHANGTao,HHIJun-ming.ExperimentalresearchontheoverpressureandpowerintheFAEblastfield[J].ExplosiveandBlast,2004(3):176-181.35　第33卷第4期仲　倩,王伯良,黄　菊,等:TNT空中爆炸超压的相似律