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首页> 外文期刊>International journal of mechanics and materials in design >Physical and numerical assessments of the penetration behavior of coplanar linear shape charges
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Physical and numerical assessments of the penetration behavior of coplanar linear shape charges

机译：共面线性形状电荷的渗透行为的物理和数值评估

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In this study, we aimed to demolish irregular constructions that are usually composed of convex, concave, and straight structures based on the shaped charge jet. Accordingly, the penetration behaviour of convergent, divergent, and straight linear shaped charges (LSCs) have been detected with numerical and physical methods. For comparison purposes, numerical models for all three types of LSCs with identical cross-sections have been established to investigate the impacts of structural features. It is found that the shaped charge structure not only determines the kinematic consumption during the penetration process but also influences the initial value of the jet velocity. Additionally, because of the interactions between the previous and subsequent jets, the jet velocity of the convergent LSC shows an obvious undulation during the penetration process. Furthermore, quantitative analyses of the kinematic consumption and initial velocity differences for three types of LSCs are conducted with physical models. A kinematic consumption difference is revealed, and the mass of the charge that determines the initial jet velocity as a function of the geometric parameters in three types of LSCs is deduced. Finally, we combined the numerical and physical models and conducted integral analyses to assess the penetration behaviours of the three LSC types.
机译：在这项研究中，我们旨在拆除通常基于成形电荷射流的凸，凹和直结构构成的不规则结构。因此，用数值和物理方法检测了会聚，发散和直线形电荷（LSC）的渗透行为。为了比较目的，已经建立了具有相同横截面的所有三种LSC的数值模型，以研究结构特征的影响。结果发现，成形电荷结构不仅确定穿透过程中的运动消耗，而且影响喷射速度的初始值。另外，由于先前和随后的喷射之间的相互作用，收敛LSC的射流速度在穿透过程中显示出明显的波动。此外，使用物理模型进行三种类型LSC的运动消耗和初始速度差异的定量分析。推出了作为三种类型的LSC中的几何参数确定初始喷射速度的电荷消耗差异。最后，我们组合数值和物理模型并进行了整体分析，以评估三种LSC类型的渗透行为。

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