Influences of target plates with water walls on penetration capability of high-velocity fragments
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摘要: 针对大当量成型弹药破片毁伤威力试验风险系数大、试验效能低的问题，提出采用带水墙靶板的方式对破片毁伤参数进行测定的新方法。应用动力学模拟软件AUTODYN，对破片侵彻带水墙靶板及无水墙靶板的过程进行了有限元数值模拟，分析了水墙厚度和破片入射角度对破片侵彻能力的影响规律，通过实弹试验的方式对带水墙靶板的实用效果进行了验证。计算结果表明，带水墙靶板相比无水墙靶板，能够大大降低破片的侵彻能力，同时与实弹试验效果也能较好吻合，说明在实际试验中使用带水墙靶板收集破片毁伤参数的方法是可行的。Abstract: To overcome the high-risk and low-efficiency problems in large-volume ammunition fragmentation tests, a new method was proposed by setting water walls in front of target plates for comprehensively collecting the damage parameters of the fragments. The dynamic simulation software AUTODYN was used to simulate the penetration processes of the fragments into the target plates with the water walls and without the water walls. The influences of the thickness of the water wall and the incident angle of the fragment on the penetration capability was analyzed, and the effectiveness of the proposed method was verified by the test. The calculation results show that compared with the target plates without the water walls, the target plates with the water walls can greatly reduce the penetration capability of fragments. The results are also in good agreement with the test data, which indicates that it is feasible to use the target plates with the water walls to collect the damage parameters of the fragments in the actual tests.
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Key words:
- damage test /
- water wall /
- target plate /
- high-velocity fragment
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图 4 不同时刻破片侵彻带水墙靶板的典型状态
Figure 4. Typical states of a fragment penetrating into a target plate with a water wall at different times
图 5 破片侵彻带水墙靶板速度变化曲线
Figure 5. Velocity-time curve of the fragment penetrating into the target plate with the water wall
图 6 破片侵彻无水墙靶板速度变化曲线
Figure 6. Velocity-time curve of the fragment penetrating into the target plate without the water wall
图 9 破片剩余速度随入射角度的变化
Figure 9. Variation of residual velocity of fragment with incident angle
材料名称 密度/(Mg·m−3) Grüneisen系数 c/(km·s−1) s1 参考温度/K 比热/(J·kg−1·K−1) 钨合金 17.8 1.54 4.03 1.237 300.0 134 钢 7.8 1.6 3.98 1.58 300.0 408 
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