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使用具有爆轰的欧拉弹塑性多材料多相流模型对锥形和线性聚能装药进行数值模拟。

Numerical Simulation of Conical and Linear-Shaped Charges Using an Eulerian Elasto-Plastic Multi-Material Multi-Phase Flow Model with Detonation.

作者信息

Yeom Geum-Su

机构信息

Department of Mechanical Engineering, Kunsan National University, Gunsan 54150, Korea.

出版信息

Materials (Basel). 2022 Feb 24;15(5):1700. doi: 10.3390/ma15051700.

DOI:10.3390/ma15051700
PMID:35268928
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8911368/
Abstract

This study developed a hydrocode to numerically simulate both conical and linear-shaped charges using an Eulerian multi-material and multi-phase flow model. Elasto-plastic solids and the detonation of a high explosive charge were modeled using a Johnson-Cook material model and the programmed burn model, respectively. Further, the plasticity of the solids was calculated using a radial return mapping algorithm. The model was solved using a high-resolution computational fluid dynamics (CFD) technique on Cartesian grids. Material interfaces were tracked using the level-set method, and the boundary conditions were imposed using the ghost fluid method. The developed hydrocode was validated using high-speed impact problems. Consequently, the developed hydrocode was used to successfully simulate the evolution and penetration of metal jets in shaped charges after a detonation.

摘要

本研究开发了一种流体力学程序，使用欧拉多材料和多相流模型对锥形装药和线形装药进行数值模拟。弹塑性固体和高爆炸药的爆轰分别采用约翰逊-库克材料模型和程序燃烧模型进行建模。此外，使用径向返回映射算法计算固体的塑性。该模型在笛卡尔网格上采用高分辨率计算流体动力学（CFD）技术求解。使用水平集方法跟踪材料界面，并使用虚拟流体方法施加边界条件。所开发的流体力学程序通过高速冲击问题进行了验证。因此，所开发的流体力学程序成功地用于模拟爆炸后聚能装药中金属射流的演化和侵彻。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1dc7/8911368/d4e113d4ccc0/materials-15-01700-g014.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1dc7/8911368/c6face490874/materials-15-01700-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1dc7/8911368/e325b2db2a81/materials-15-01700-g007.jpg
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