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NUMERICAL STUDY OF HIGH-DENSITY TITANIUM ALLOY SHAPED CHARGE JET PENETRATION INTO CONCRETE

机译:高密度钛合金电荷射流渗透到混凝土中的数值研究

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Numerical simulations for penetration into C35 concrete by 27 kinds of shaped charges with different cone angles, different liner thicknesses at different stand-offs were performed based on AUTODYN-2D software in this paper. Titanium alloy with a density of 6.0g/cm3 was chosen as liner material. The formations of shaped charge jets (SCJs) were studied and the influence rules of liner thickness, cone angle and stand-off on penetration depth and borehole diameter of SCJs were analyzed. Predecessors’ theoretical research achievements were discussed. Results show that large liner thickness is unsuitable for small cone angle, which results in poor penetration efficiency. SCJ formed by larger cone angle and proper liner thickness is not very sensitive to stand-off distance, which has better penetration depth as well as borehole diameter. The penetration depth increases and crater diameter decreases along with the increasing of stand-off distance. These results show a great engineering significance.
机译:用不同锥角的27种成形电荷渗透到C35混凝土中的数值模拟,在本文中基于Autodyn-2d软件进行不同脱扣处的不同衬垫厚度。选择密度为6.0g / cm3的钛合金作为衬里材料。分析了成形电荷喷射器(SCJ)的形成,分析了SCJS的衬里厚度,锥形角度和脱落的衬里厚度,锥角和脱落的影响。讨论了前任的理论研究成果。结果表明,大衬垫厚度不适合小锥角,这导致渗透效率不佳。 SCJ由较大的锥角形成,适当的衬垫厚度对脱扣距离不是非常敏感,具有更好的穿透深度以及钻孔直径。渗透深度增加和火井直径随着脱扣距离的增加而减小。这些结果表明了良好的工程意义。

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