水下阵列爆炸与毁伤倍增效应研究

为利用多点爆炸能量聚集效应，提高弹药的毁伤威力，优化战斗部设计并发展新的毁伤机理和毁伤模式，需深入研究水下阵列爆炸过程中爆轰波、冲击波、气泡以及它们之间的能量耦合特征及其对结构的毁伤倍增效应。针对以往研究普遍集中于单点水下爆炸，且忽略了爆轰阶段对后续形成冲击波与气泡的影响，本项目拟从药包内部阵列起爆和阵列药包联合起爆两个方面，计入起爆爆轰波、水下药包布置、起爆时序和目标结构特征等因素，考虑冲击波-冲击波、气泡-气泡、冲击波-气泡之间的强非线性耦合作用，依据流体力学、热力学和流固耦合理论，建立有关水下阵列爆炸的耦合动力学模型与计算方法，开展水下阵列爆炸的毁伤效能研究。主要研究内容包括：1）药包内阵列爆轰对初始冲击波物态参数的影响研究；2）水下阵列爆炸冲击波传播规律及波阵面指向性研究；3）水下阵列爆炸气泡运动与载荷增强机理研究；4）计及水下目标结构特征影响的毁伤倍增效应研究与实验设计。

For the effect of using multi-point explosive energy accumulation to increase the damage power of ammunition and improve optimization design of Warhead and develop the new damage model and damage mechanism, the energy coupling characteristics of detonation wave, shock wave and bubble and the effect of damage multiplier should be studied in a deepgoing way. To this day, the studies are generally focused on underwater explosion of a single point, and the effects of detoation wave on the developed shock and bubble are ignored. In the present work, the research is started from two aspects: priming charge in the internal array and priming the array charge. The factors of detonation wave, underwater warhead layout, ignition timing and characteristics of the target are carried in. The strong nonlinear coupling influence of interactions of shock wave and shock wave, bubble and bubble, shock wave and bubble is considered. Finally, based on the hydrodynamic, thermodynamic and fluid-structure coupling theory, a coupling dynamic model of array underwater explosion is developed to explore the effect of damage multiplier. The main researches include: 1) study on the effects of warhead detonation stage on the formation and properties of shock wave. 2) study on the characteristics of shock wave propagation and its wave front. 3) study on the array bubbles dynamics and the reinforced mechanism of loads. 4) study on the damage multiplier of array underwater explosion considering characteristics of the target and design the experiments.