研究典型柱型破片质量、着靶姿态对装甲钢的弹道极限速度（V50）的影响规律，可为战斗部毁伤元设计提供有效的参考数据。本文通过弹道冲击试验获取了长径比为1，质量5g的钨柱在0°和90°着靶姿态下对10mm装甲钢的V50。试验得到钨柱破片纵向正侵彻10mm装甲钢的V50为745m/s，横向正侵彻10mm装甲钢的V50为761m/s，钨柱破片在侵彻过程中，破片被横向镦粗，破片头部受靶板挤压磨蚀，形成不规则蘑菇头状翻边。基于试验数据的单一性，通过数值模拟获取了不同着靶姿态下三种典型钨柱（3g、5g、8g）对10mm装甲钢板的V50，并探索了着靶姿态和破片质量对V50变化的影响规律，对比试验与数值模拟结果，两者相对误差在10%左右。研究发现，不同着靶姿态下，钨柱破片侵彻装甲钢的V50存在波动区间，破片纵向正着靶时V50最小，破片以40°～60°着靶姿态角着靶时V50最大，钨柱破片V50与破片迎风面积大致呈正相关，对于3g钨柱破片，最大V50比最小V50上升4.98%，5g破片上升3.51%，8g破片上升2.62%。随着破片质量的增加，钨柱破片穿透装甲钢的V50对着靶姿态越不敏感，V50波动区间越小。
Abstract
In order to provide effective reference data for the design of warhead damage element, it is useful to carry out researches on the effects of the mass of typical column fragment and the target attitude on the ballistic limit velocity (V50) of armor steel. In the condition of a 5g-mass tungsten column with aspect ratio of 1 at 0° and 90° target attitude through ballistic impact test, the V50 of 10mm armor steel was achieved: the V50 of tungsten column fragments penetrating 10mm armor steel in longitudinal direction is 745m/s, and the V50 of tungsten column fragments penetrating 10mm armor steel in transverse direction is 761m/s. In the process of penetration, the tungsten column fragments were upset transversely, and the heads of the fragments were extruded and abrased by the target plate so that the fragment formed a mushroom head-shaped flap. Because of the limitations of the single experimental data, the V50 of three typical tungsten columns (3g, 5g and 8g) penetrating 10mm armor steel in different target attitudes were achieved by using the numerical simulation. And the influence of target attitudes and fragment quality on V50 were also explored. The relative error between the numerical simulation and test results was about 10% through making a comparison. It founds that the V50 of tungsten column penetrating armor steel has fluctuation range under different target attitudes. V50 is the minimum when the fragment is vertically facing the target, and the maximum V50 is the maximum when the fragment is at the target attitudes angle of 40° ~ 60°. The V50 of tungsten column penetrating armor steel is positively correlated with the windward area of the fragment. When 3g tungsten column penetrating armor steel, the maximum of V50 increases by 4.98%, 5g fragment increases by 3.51%, and 8g fragment increases by 2.62% compared with the minimum of V50. The heavier the tungsten column fragment, the less obvious influence of different target attitudes on the V50 of tungsten column fragment penetrating armor steel. At the same time, the fluctuation range of V50 is smaller.
关键词
着靶姿态 /
侵彻 /
弹道极限 /
V50
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Key words
Target attitude /
Penetration /
Ballistic limit /
V50
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