摘要
采用AUTODYN软件对TNT在空气中爆炸进行了数值计算,在计算模型中考虑了负氧平衡炸药的后燃烧效应,并将峰值超压、比冲量、正压作用时间计算结果与相似律公式计算值以及Baker测试数据进行了对比,指出Brode公式计算出的炸药附近空气冲击波峰值超压明显偏大,可能是将爆轰产物造成的峰值超压误认为空气冲击波峰值超压所致。
Numerical simulation of TNT explosion in air was performed by AUTODYN software. Post-detonation burning effect in negative oxygen balance explosive was considered in the numerical calculation model. Calculated results including peak overpressure,speeifie impulse and positive time were compared with that calculated by similitude equations and experimental data from Baker. Results show that airblast peak overpressure near explosive calculated by Brode equation is much larger than that AUTODTN software and Henrych equation, because the peak pressure of airblast can not be distinguished from that of detonation products.
出处
《含能材料》
EI
CAS
CSCD
2008年第2期160-163,共4页
Chinese Journal of Energetic Materials
