非均质炸药殉爆试验数值模拟

Numerical Simulation of Sympathetic Detonation of Heterogeneous Condensed Explosives

为了确定影响非均质炸药在冲击波作用下殉爆的主要因素,对冲击波作用下炸药殉爆过程进行了数值模拟研究;运用LS-DYNA3D软件对模型中不同情况的主发药和被发药进行了数值模拟,结合冲击起爆临界判据对模拟结果进行了验证。结果表明:殉爆距离与主发药的爆轰压力和被发药的爆轰感度以及主被发药的形状关系密切,与被发药是否施加约束无显著关系。

In order to determine the primary factors which influence sympathetic detonation of heterogeneous condensed explosives, the numerical simulation of the sympathetic detonation under shock initiation was studied. The LS-DY- NA3D was used to simulate the detonation process of different models of donor charge and aeceptor charge, and the simulation result was validated by critical initiation criterion. The simulation resul： shows that the properties of the ac- ceptor charge and the shock wave pressure of the donor charge are primary factors which cause sympathetic detonation of the acceptor charge, as well as the shape of both donor charge and acceptor charge, but it is rarely influenced no matter whether fasten the aeceptor charge or not.