摘要
通过对空气中TNT爆炸冲击波超压峰值的已有研究成果进行比较分析,发现不同学者对其预测结果存在一定差别,并据此拟合总结出能较好地描述冲击波超压峰值与比例距离关系的表达式。同时用LS-DYNA动力有限元软件模拟了2种不同装药量条件下空气中TNT炸药爆炸产生的冲击波的传播,模拟所得的超压峰值小于经验公式的结果,装药量大的模拟结果更接近经验公式预测值。有必要对爆炸冲击波的参数和经验公式进行进一步的研究。
Differences between several scholars＇ forecasts of peak overpressure have been compared by the contrastive analysis of research on TNT explosion shock wave spreading in the air. A new formula has been summed up, and LS-DYNA has been used to simulate the spreading of shock wave in the air generated by TNT explosion on different conditions. The numerical values are less than empirical formula＇s. The results of the explosion with heavier load are more approximate than the forecasting results of empirical formula. So it＇s necessary to do more research on explosion shock wave parameters.
出处
《爆破》
CSCD
2008年第1期15-18,31,共5页
Blasting
关键词
冲击波
超压峰值
比例距离
数值模拟
shock wave
peak overpressure
scaled distance
numerical simulation
作者简介
杨鑫（1984-），男；重庆：后勤工程学院硕士生．
