退役单基药的冲击起爆特性  

Shock initiation characteristics of expired single-base propellants

作　　者：姜夕博[1] 饶国宁[1] 徐森[1] 姚淼[1] 马安鹏[1] 彭金华[1] 

机构地区：[1]南京理工大学化工学院,江苏南京210094

出　　处：《爆炸与冲击》2014年第1期99-105,共7页Explosion and Shock Waves

摘　　要：为了研究退役单基药的冲击起爆特性，参照GJB772A-97中卡片式隔板法实验方法，分别开展了退役单基药的连续爆速实验、冲击波感度实验及锰铜压力计实验，观测了其冲击起爆的爆轰建立过程，得到了临界隔板值以及临界起爆压力。在连续爆速实验中，隔板厚度为50mm时，观察到了退役单基药反应冲击波不断增长的过程，并在90mm处转变为爆轰；在冲击波感度以及锰铜压力计实验中，测得其临界隔板厚度为50～52mm，临界起爆压力为1．35～1．49GPa。对退役单基药的冲击起爆过程进行了数值模拟，结合三种实验的实验结果，标定了其点火增长模型反应速率方程参数。The continuous detonation velocity test, the shock wave sensitivity test and the critical initi- ation pressure test were developed, respectively, with reference to the GJB772A-97 card gap test. Based on the above tests, the detonation establishment process in the expired single-base propellant was investigated, and the critical gap thickness and the critical initiation pressure were obtained. In the continuous detonation velocity test, the building-up process of the reactive shock wave was ob- served at the PMMA gap thickness of 50 mm and it developed into a normal detonation at the PMMA gap thickness of 90 mm. The critical gap thickness was 50--52 mm obtained from the shock wave sen- sitivity test. And the critical initiation pressure was 1.35--1.49 GPa obtained from the critical initia- tion pressure test. According to the above tests, the numerical simulations were conducted to calibrate the parameters of the reactive rate equation in the ignition-and-growth model for the expired single- base propellant.

关 键 词：爆炸力学 冲击起爆 连续爆速 退役单基药 冲击波感度 反应速率方程 

分 类 号：O381[理学—流体力学]