陶瓷易碎弹对铝板的冲击特性研究
发布时间：2018-07-29 13:26
【摘要】：为研究陶瓷易碎弹对铝板的冲击特性,建立陶瓷易碎弹冲击铝板的有限元模型,利用LS-DYNA有限元程序分析弹头冲击铝板时的应力变化及速度对弹头冲击性能的影响;建立陶瓷易碎弹冲击铝板的力学模型,对陶瓷易碎弹弹头破碎进行理论分析;通过陶瓷易碎弹对铝板的冲击性能试验,验证数值模拟和理论分析的正确性。研究结果表明:陶瓷易碎弹具有良好的破碎性能,合适的速度冲击铝板时铝板损伤较小;弹头破碎从陶瓷壳体圆头部开始,陶瓷壳体最大应力始终在弹-靶接触区域边缘,是冲击过程中陶瓷壳体最容易破坏的区域。
[Abstract]:In order to study the impact characteristics of ceramic fragile projectile on aluminum plate, the finite element model of ceramic fragile projectile impacting aluminum plate was established. The stress change and the effect of velocity on the impact performance of warhead were analyzed by LS-DYNA finite element program. The mechanical model of ceramic friable projectile impact on aluminum plate was established, and the theoretical analysis of ceramic fragile bomb warhead breakage was carried out, and the correctness of numerical simulation and theoretical analysis was verified by the impact performance test of ceramic fragile bomb on aluminum plate. The results show that the ceramic shrapnel has good crushing performance, the damage of the aluminum plate is less when the velocity is suitable, and the warhead is broken from the round head of the ceramic shell, and the maximum stress of the ceramic shell is always at the edge of the contact area between the projectile and the target. It is the most easily damaged area of ceramic shell during impact.
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本文编号：2152818
[Abstract]:In order to study the impact characteristics of ceramic fragile projectile on aluminum plate, the finite element model of ceramic fragile projectile impacting aluminum plate was established. The stress change and the effect of velocity on the impact performance of warhead were analyzed by LS-DYNA finite element program. The mechanical model of ceramic friable projectile impact on aluminum plate was established, and the theoretical analysis of ceramic fragile bomb warhead breakage was carried out, and the correctness of numerical simulation and theoretical analysis was verified by the impact performance test of ceramic fragile bomb on aluminum plate. The results show that the ceramic shrapnel has good crushing performance, the damage of the aluminum plate is less when the velocity is suitable, and the warhead is broken from the round head of the ceramic shell, and the maximum stress of the ceramic shell is always at the edge of the contact area between the projectile and the target. It is the most easily damaged area of ceramic shell during impact.
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本文编号：2152818
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