铝质量分数对CL-20基炸药驱动筒壁能量输出结构影响

为探究铝粉质量分数对六硝基六氮杂异伍兹烷（CL-20）基炸药在爆炸驱动筒壁过程中能量输出结构的影响，考虑到筒壁及爆轰产物的轴向运动，基于微元法和爆轰产物状态方程建立了爆炸驱动过程中的能量输出模型. 设计了2种不同铝质量分数的CL-20基炸药（CA5、CA30）和对应的含氟化锂炸药（CF5、CF30），开展直径50 mm的标准圆筒实验，应用光子多普勒测速仪记录圆筒壁膨胀速度. 计算结果表明:圆筒壁膨胀过程中，基体炸药质量分数由89%降至64%时，CL-20基含铝炸药和含氟化锂炸药驱动金属的能力降低；铝粉质量分数由5%增加到30%时，膨胀结束时刻的内能随之增加；不同氟化锂质量分数的CL-20基炸药能量转化率在93%左右，该值均高于对应的含铝炸药. 

Influence of Aluminum Content on Energy Output Structure of CL-20-Based Explosives Driving Cylinder Wall

In order to study the influence of aluminum powder content on the energy output structure of hexanitrohexaazaisowurtzitane (CL-20)-based aluminum-containing explosives in the process of driving the cylinder wall by explosion, a model of energy output of the explosion-driven cylinder wall was established, based on the micro-element method and the detonation products equation of state, and taking into account the axial motion of cylinder wall and detonation products. Standard 50 mm cylinder tests were carried out on two kinds of CL-20 based explosives (CA5, CA30) with different aluminum contents and the corresponding lithium fluoride explosives (CF5, CF30). The expanding velocities of cylinder were measured by using the photonic Doppler velocimetry. The results show that when the content of matrix explosive decreases from 89% to 64%, the ability of CL-20-based aluminum-containing explosive and lithium fluoride explosive to drive metal decreases; when the content of aluminum powder increases from 5% to 30%, the internal energy at the end of expansion increases; the energy conversion rate of CL-20-based explosives with different lithium fluoride contents is about 93%, which is higher than that of the corresponding aluminum-containing explosives.