摘要:
通过空中爆炸实验,研究了铝纤维对爆炸能量输出的影响,结果表明:wAl=0.20的TNT/Al,冲击
波压力峰值为TNT 的1.19倍,TNT 当量为TNT 的1.29倍;wAl=0.20的RDX/Al,冲击波压力峰值为
RDX的1.20倍,爆热为TNT的1.64倍,是RDX的1.31倍。通过抗压实验,研究了铝纤维对炸药力学强度
的影响,结果表明,铝纤维能增强TNT炸药的力学强度,破坏应力为6.8MPa,应变为0.043。铝纤维对炸药
能量和力学强度的双重增强特性,可以为现代高性能炸药设计提供参考。
Abstract:
AluminumfibrewasaddedintoTNTandRDXexplosives,respectively,tosynthesizecompositeexplosiveswiththealuminum-
fibremassfractionof0.2.Airblastexperimentswereconducted
inasteelexplosion-containmentvesseltoinvestigatetheeffectsofaluminumfibreontheexplosiveenergyoutput.
Resultsdisplaythattheoverpressureandexplosionheatofthealuminum-fibre-reinforcedcompositeTNTexplosivearriveat1.19and1.29timesashighasthoseofthepureTNTexplosive,
respectively.Theoverpressureandexplosionheatofthealuminum-fibre-reinforcedcompositeRDXexplosivearriveat1.20and1.31timesashighasthoseofthepureRDXexplosive,
respectively.
Andtheexplosionheatofthealuminum-fibre-reinforcedcompositeRDXexplosiveis1.64
timesasmuchasthatofthepureTNTexplosive.Mechanicalstrengthtestswereperformedbya
WDW4100almightytestsystemtoanalyzetheeffectsofaluminumfibreonthemechanicalstrengthof
TNTexplosives.TestresultsshowthatthedamagestressofthecompositeTNTexplosiveisupto6.
87MPaandthecorrespondingstrainis0.043.Andaluminumfibrecanimprovethe mechanical
strengthofexplosives.Thisresearchcanprovidereferenceforthedesignofhighexplosives.
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