铝质量分数对 CL-20 基炸药驱动筒壁能量输出结构影响

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.