Computer simulation of high explosive explosion using smoothed particle hydrodynamics methodology
Computer simulation of high explosive explosion using smoothed particle hydrodynamics methodology
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DOI：
10.1016/s0045-7930(01)00105-0
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发表时间：
2003-03-01
影响因子：
2.8
通讯作者：
Lam, KY
中科院分区：
文献类型：
--
作者：
Liu, MB;Liu, GR;Lam, KY
本文应用光滑粒子流体动力学（SPH）方法模拟了由爆轰和抛撒两个过程组成的高能炸药爆炸过程。SPH方法结合了无网格和拉格朗日的特点，避免了传统数值方法在处理大变形、大不均匀性和追踪自由面等极端瞬态爆炸过程中的不足。四个数值例子与不同来源的比较。所给出的数值算例涉及任意装药形状和不同爆轰方向的不同爆轰场景。仿真结果表明，所提出的SPH方法可以很好地预测爆轰波的大小和形式，以及爆炸过程中的压力瞬态。在模拟中可以很好地捕捉到HE爆炸的主要物理过程。(C)2002爱思唯尔科技有限公司版权所有。
In this paper, the smoothed particle hydrodynamics (SPH) is applied to simulate the high explosive (HE) explosion which consists of detonation and dispersion process. The combination of meshless and Lagrangian nature inherent in the SPH methodology avoids the disadvantages of traditional numerical methods in treating large deformations, large inhomogeneities and tracing free surfaces in the extremely transient explosion process. Four numerical examples are presented with comparisons from different sources. The presented numerical examples involve in various HE explosion scenarios of arbitrary charge shape and different detonation orientations. The simulation results show that the presented SPH methodology can give good prediction for both the magnitude and form of the detonation wave as well as the pressure transient in the explosion process. Major physics of the HE explosion can be well captured in the simulation. (C) 2002 Elsevier Science Ltd. All rights reserved.