摘要
为了研究多个装药水中阵列爆炸冲击波的耦合作用和传播规律,利用水中爆炸试验,测量了整体装药、两装药和四装药水中阵列爆炸的冲击波-压力时间曲线,分析了装药数量、阵列距离对水中冲击波峰值压力、冲量和作用时间的影响以及阵列爆炸冲击波参数随距离的变化规律。结果表明,两点阵列爆炸,装药聚焦方向(对称中心线)的冲击波可形成叠加,比例距离2~6 m·kg^(-1)/3的范围,冲击波压力强度增加了22.8%~55.4%,冲击波峰压的增益随着传播距离的增大逐渐增大,非对称方向的冲击波压力可形成延时耦合;四点阵列爆炸,装药聚焦方向的冲击波最高峰值压力都接近于整体装药,装药数量的增加可以提高冲击波的高压区域范围和冲量。阵列爆炸点和布局相同时,阵列距离的增加可提高冲量和冲击波作用时间,冲击波压力作用时间则随着装药数量和阵列距离的增大而增大。两点和四点爆炸,冲击波耦合叠加后的多个冲击波峰值压力、冲量都仍符合爆炸相似率,但冲击波压力作用时间则不符合爆炸相似率。
To investigate the coupling effect and propagation law of shock wave for underwater array explosion with multiple charges.The shock wave parameters of group charge,two charges and four charges were measured by underwater explosion test.The influence of charge quantity and array distance on peak pressure,impulse and loading time of shock waves were analyzed and revealed the relationship beween array explosion shock wave parameters and distances.The results showed that the shock wave(symmetrical center line)can be superimposed in the focusing direction for two-charge explosion.The shock wave pressure intensity increased by 22.8%-55.4%in the scale distance of 2-6 m·kg^(-1)/3,and the gain increased gradually with the increase of propagation distance.For four-charge array explosion,the peak pressure of the shock wave in the focusing direction was close to that of group charge.For the same explosion points and layout of the array explosion,the impulse and shock wave loading time can be improved by increasing the array distance.The loading time of shock wave pressure increased with the increase of charge quantity and array distance.For two-charge and four-charge explosion,the peak pressure and impulse of multiple shock waves were still consistent with explosion similarity law,but the loading time of shock wave pressure was not.
作者
胡宏伟
王健
冯海云
李道奎
郭洪卫
HU Hong-Wei;WANG Jian;FENG Hai-yun;LI Dao-kui;GUO Hong-wei(College of Aerospace Science and Engineering,National University of Defense Technology,Changsha 410073,China;Xi′an Modern Chemistry Research Institute,Xi′an 710065,China;Beijing institute of system engineerin,Beijing 100101,China)
出处
《含能材料》
EI
CAS
CSCD
北大核心
2021年第5期370-380,I0004,共12页
Chinese Journal of Energetic Materials
关键词
爆炸力学
水中爆炸
阵列爆炸
冲击波
传播特性
explosion mechanics
underwater explosion
array explosion
shock wave
propagation characteristic
