Analytical model for cratering of semi-infinite metallic targets by long rod penetrators

Analytical model for cratering of semi-infinite metallic targets by long rod penetrators
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长杆侵彻弹对半无限金属目标产生弹坑的分析模型

DOI:
10.1007/s11431-010-4101-6
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发表时间:
2010-11
期刊:
Science China Technological Sciences
影响因子:
--
通讯作者:
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中科院分区:
其他
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本文建立了长杆穿甲弹击中半无限金属目标弹坑直径的解析模型。在观察到长杆侵彻器在空腔扩张过程中涉及到的两种机制,即成穴和空化两种机制的基础上,利用质量、动量、能量守恒定律,结合新提出的长杆侵彻一维理论的u-v关系,构建了该模型(见兰、文,中国科学技术科学,2010,53(5):1364-1373)。结果表明,对于不同材料的侵彻弹与靶的组合,模型的预测结果与现有的实验数据和数值模拟结果吻合较好。
Analytical model is presented herein to predict the diameter of crater in semi-infinite metallic targets struck by a long rod penetrator. Based on the observation that two mechanisms such as mushrooming and cavitation are involved in cavity expansion by a long rod penetrator, the model is constructed by using the laws of conservation of mass, momentum, energy, together with theu-vrelationship of the newly suggested 1D theory of long rod penetration (see Lan and Wen, Sci China Tech Sci, 2010, 53(5): 1364–1373). It is demonstrated that the model predictions are in good agreement with available experimental data and numerical simulations obtained for the combinations of penetrator and target made of different materials.
DOI: 10.1016/s0734-743x(99)00108-6
发表时间: 1999-12
影响因子: 5.1
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