含铝炸药能量释放的简化模型

为了在水下爆炸效应中反映出非理想爆轰特性的影响，建立了含铝炸药非理想爆轰能量释放的简化模型。该模型以CJ爆轰理论和二次反应理论为基础，把含铝炸药化学反应划分为快速反应和慢速反应，以释放的化学能和慢反应速率常数作为非理想特征参数，并应用于一维数值模拟。计算结果与基本实验结果一致，冲击波峰值的计算误差不大于10％，衰减时间常数的误差小于5％，冲击波能与实验值也具有良好的一致性。简化模型合理地描述了含铝炸药非理想爆轰的主要过程及非理想特性，可应用于含铝炸药的设计和爆炸效应的分析。

A simplified model of energy release for aluminized explosives

A simplified model of nonideal detonation energy release is proposed to account for the effect of nonideal detonation on underwater explosion. Based on the CJ detonation theory and the later reaction theory, the model divides chemical reactions in aluminized explosives into fast and slow reactions, and takes the released chemical energy and the slow reaction rate as the nonideal characteristic parameters. One-dimensional calculations using this model are in good agreement with the experiments, with the error in peak pressure of shock wave and the error in decay time constant less than 10% and 5%, respectively. The shock wave energies are also in agreement with the experimental results. This indicates that this simplified model has correctly described the major processes and characteristics of the nonideal detonation, and can be used in explosive design and explosion effect analysis.