TNT内爆准静态压力实验和数值模拟研究
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摘要
通过自主设计的密闭爆炸容器,开展了TNT内爆实验,用指数衰减模型对压力载荷进行分析,并与数值模拟结果进行对比;结果表明:质量/空间体积m/V是决定准静态压力的主要因素,针对不同的m/V范围,准静态压力变化规律呈现差异性;基于实验数据,得到了爆炸准静态压力的经验计算公式,可为爆炸准静态压力预估和炸药威力评价提供参考。
Squasi-static pressure in explosion containment vessel,experiments were carried out through a self-designed explosion containment vessel. The exponential decay model was used to analyze the pressure load,and the results were compared with those of numerical simulation. The results shows that quasi-static pressures obtained by exponential decay model agree well with numerical simulation results. The ratio of charge mass and volume( m/V) is the main factor determining quasi-static pressure,and the variation of quasi-static pressure varies according to different m/V ranges. Based on the experimental date,the empirical formula of the quasi-static pressure was fitted,which can provide reference for the prediction of quasi-static pressure and the evaluation of explosives power.
Squasi-static pressure in explosion containment vessel,experiments were carried out through a self-designed explosion containment vessel. The exponential decay model was used to analyze the pressure load,and the results were compared with those of numerical simulation. The results shows that quasi-static pressures obtained by exponential decay model agree well with numerical simulation results. The ratio of charge mass and volume( m/V) is the main factor determining quasi-static pressure,and the variation of quasi-static pressure varies according to different m/V ranges. Based on the experimental date,the empirical formula of the quasi-static pressure was fitted,which can provide reference for the prediction of quasi-static pressure and the evaluation of explosives power.
引文
[1] RICHARD G A,JASON T D,JOSEPH S,et al. Quantitative distinction between detonation and after burn energy deposition using pressure-time histories in enclosed explosions[C]//13th International Detonation Symposium. Norfolk Virginia:Office of Naval Research,2006.
[2] BAKER W E,OLDHAM G A. Estimates of blowdown of quasi-static pressures in vented chambers[R]. San Antonio,TX:Southwest Research Institute,1975.
[3] MARCHAND K A,COX P A,POLCYN M A. A design guide and specification for small explosive containment structures[J]. Containment Systems,SAND94-2255[R].US:Amer Society of Civil Engineers,1994:324-331.
[4] ANDERSON C E,BAKER W E,WAUTERS D K,et al.Quasi-static pressure,duration,and impulse for explosions in structures[J]. International Journal of Mechanical Sciences,1983,25(6):455-456.
[5]王等旺,张德志,李焰,等.爆炸容器内准静态气压实验研究[J].兵工学报,2012,33(12):1493-1497.
[6]钟巍,田宙.等压假设下考虑化学反应动力学影响的约束爆炸准静态压力的计算[J].爆炸与冲击,2013,33(4):375-380.
[7]张玉磊,李芝绒,李海燕等.温压炸药内爆炸压力特性及威力试验研究[J].兵工学报,2018,39(7):1333-1338.
[8] AMES R G,DROTAR J T,SILBER J. et al. Quantitative distinction between detonation and after burn energy deposition using pressure-time histories in enclosed explosions[C]//Proc of 39th Int Annu Conf of ICT. Karlsruhe:ICT,2008.
[9]刘文祥,张德志.球型爆炸容器内炸药爆炸形成的准静态气体压力[J].爆炸与冲击,2018,38(5):1045-1050.
[10] CARLSON R W. Confinement of an explosion by a steel vessel[R]. Los Alamos:LANL. 1945.
[11] FELDGUN V R,KARINSKI Y S,EDRI I,et al. Prediction of the quasi-static pressure in confined and partially confined explosions and its application to blast response simulation of flexible structures[J]. Int J Impact,2016,90(15):46-60.
[2] BAKER W E,OLDHAM G A. Estimates of blowdown of quasi-static pressures in vented chambers[R]. San Antonio,TX:Southwest Research Institute,1975.
[3] MARCHAND K A,COX P A,POLCYN M A. A design guide and specification for small explosive containment structures[J]. Containment Systems,SAND94-2255[R].US:Amer Society of Civil Engineers,1994:324-331.
[4] ANDERSON C E,BAKER W E,WAUTERS D K,et al.Quasi-static pressure,duration,and impulse for explosions in structures[J]. International Journal of Mechanical Sciences,1983,25(6):455-456.
[5]王等旺,张德志,李焰,等.爆炸容器内准静态气压实验研究[J].兵工学报,2012,33(12):1493-1497.
[6]钟巍,田宙.等压假设下考虑化学反应动力学影响的约束爆炸准静态压力的计算[J].爆炸与冲击,2013,33(4):375-380.
[7]张玉磊,李芝绒,李海燕等.温压炸药内爆炸压力特性及威力试验研究[J].兵工学报,2018,39(7):1333-1338.
[8] AMES R G,DROTAR J T,SILBER J. et al. Quantitative distinction between detonation and after burn energy deposition using pressure-time histories in enclosed explosions[C]//Proc of 39th Int Annu Conf of ICT. Karlsruhe:ICT,2008.
[9]刘文祥,张德志.球型爆炸容器内炸药爆炸形成的准静态气体压力[J].爆炸与冲击,2018,38(5):1045-1050.
[10] CARLSON R W. Confinement of an explosion by a steel vessel[R]. Los Alamos:LANL. 1945.
[11] FELDGUN V R,KARINSKI Y S,EDRI I,et al. Prediction of the quasi-static pressure in confined and partially confined explosions and its application to blast response simulation of flexible structures[J]. Int J Impact,2016,90(15):46-60.