It is a key problem to design and prepare metallized explosives of high energy and low sensitivity. In order to study the effect of the content of the boron/aluminum (B/Al) compound powder on the energy output property of metallized explosives in the air blast, three HMX-based explosives containing B/Al were designed and prepared. Air blast tests of cylindrical samples are performed, accompanied by numerical simulations by the finite element program LS-DYNA. The results show that the shock wave overpressures of explosives containing B/Al are higher than those of explosives containing Al under the same conditions. The deviations between the values calculated by the empirical equation and the measured values are smaller than 3.5 kPa, and the deviations between the values obtained in numerical simulations and the measured values are smaller than 4.9 kPa. Although the Al powder can enter the reaction with detonation products and air easier, the burning time of the boron powder is longer and the released energy is larger. Moreover, as the content of the B/Al compound powder increases, the burning time becomes longer, and the aftereffect work ability and the damage effect become stronger.

中文翻译：

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空气爆炸含B/Al炸药的能量输出特性研究

高能低感金属化炸药的设计和制备是一个关键问题。为研究硼/铝(B/Al)复合粉体的含量对金属化炸药在空气爆炸中能量输出性能的影响，设计制备了三种含B/Al的HMX基炸药。对圆柱形样品进行空气爆破试验，并通过有限元程序 LS-DYNA 进行数值模拟。结果表明，在相同条件下，含B/Al炸药的冲击波超压高于含Al炸药。经验方程计算值与实测值偏差小于3.5 kPa，数值模拟所得值与实测值偏差小于4。9千帕。虽然铝粉更容易进入与爆炸产物和空气的反应，但硼粉的燃烧时间更长，释放的能量更大。而且，随着B/Al复合粉体含量的增加，燃烧时间变长，后效工作能力和破坏效果变强。