超细钝感HMX小尺寸拐角装药爆轰延迟时间研究

Delay Time of Detonation Wave of Superfine Insensitive HMX Charged in Limited Corner Channel

为了研究超细钝感HMX在小尺寸拐角装药条件下的爆轰延迟现象,对影响爆轰延迟时间的因素进行了分析,采用量纲分析法给出了拐角延迟时间的理论表达式;测定了沟槽尺寸为0.8 mm×0.8 mm、0.6 mm×0.6 mm的拐角装药爆轰延迟时间。结果表明,在相同的拐角角度下,d=0.6 mm时拐角装药爆轰延迟时间更长,α=2π/3时还出现熄爆。以理论表达式和测试结果为基础,采用最小二乘法原理得出了待定系数k与m分别为365.8和4.75,得到了拐角延迟时间与拐角角度关系的半经验关系式。

The factors influencing delay time of detonation wave of superfine insensitive HMX in limited corner channel were analyzed. The dimension analysis method was adopted to induce the theory formula, and the delay time was tested by valid experiments in the limited corner of 0.8 mm × 0.8 mm and 0.6 mm × 0.6 mm channel. Results show that the delay time of detonation wave is longer in the channel d = 0.6 mm than d = 0.8 mm with similar corner, and the propagation of detonation wave will be failure when α=2π/3. Based on the theory formula and the testing results,the semi-experimental equation is given by Least Square Method,and the undetermined coefficients k and m are 365.8 and 4.75.