摘要
为了使爆压测定方法更加方便并且更适合于野外大药量的测量,利用自行研制的压导式连续电阻丝探针,设计了一种改进水箱法,可在单次试验中连续记录炸药爆轰波和水中冲击波波阵面的运动轨迹。同时,为了进一步简化实验装置和操作过程,设计了基于连续压导探针的简化水箱法。利用以上两种实验装置,对不同组分的ANFO炸药进行爆压测量,获得了爆轰波-冲击波波阵面时程曲线。通过对爆轰波段数据拟合,得到了各待测炸药的爆速;利用贴近炸药区域介质中的冲击波数据,拟合得到初始冲击波速度,再结合水和有机玻璃的冲击Hugoniot曲线以及阻抗匹配原理,求解得到各待测炸药的CJ压力和绝热指数。实验结果表明,基于连续压导探针的改进水箱法可准确快捷地测量炸药的爆速、爆压等参数,可作为炸药性能测试技术的重要补充。
In order to measure the detonation pressure of large mass explosive more convenient in the field work, a modified aquarium test has been designed by using a self-developed continuous pressure-conducted velocity probe (CPVP). The method can continuously record the trajectories of detonation and shock wave fronts in a single test. In addition, a simplified aquarium test method based on the novel velocity probe was designed to further simplify the experimental setup and operation process. By using the two type of devices, detonation pressure measurements for the different ammonium-nitrate/fuel-oil (ANFO) ratio explosives were performed and the time history curves of detonation-shock wave fronts were measured. The detonation velocity of each shot was then obtained by fitting the detonation wave data, and the initial shock velocity was determined based on the shock wave data of the medium adjacent to the explosive. Based on the shock Hugoniot curves of water and Plexiglas, we calculated the CJ pressures and adiabatic exponents of each test based on impedance matching principle. The experimental results show that the CPVP-based aquarium test can measure the detonation velocity and detonation pressure accurately and efficiently. The CPVP-based aquarium test method will be a significant supplement technique for explosive performance estimation.
作者
李科斌
李晓杰
王小红
闫鸿浩
曹景祥
LI Kebin;LI Xiaojie;WANG Xiaohong;YAN Honghao;CAO Jingxiang(Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, China;State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian 116024, China;Dalian Shipbuilding Industry Explosive Processing Research Co., Ltd., Dalian 116311, China)
出处
《高压物理学报》
EI
CAS
CSCD
北大核心
2019年第2期60-66,共7页
Chinese Journal of High Pressure Physics
基金
国家自然科学基金(11272081
11672067
11672068)
关键词
爆轰压力
水箱法
连续压导探针
阻抗匹配
detonation pressure
aquarium test
continuous pressure-conducted velocity probe (CPVP)
impedance matching
