射流引爆带不同壳体炸药的规律研究

Research on Jet Initiation Different Material Shells Covered Explosive

在提高战斗生存能力的研究中,不敏感战斗部是一种新型战斗部,能够在强外界刺激下不容易被引爆。传统的常规弹药壳体多为炮弹钢,难以抵抗射流的冲击引爆,但缺乏选择能够提高弹药不敏感度壳体材料的依据。为解决上述问题,对射流引爆带不同材料壳体炸药的临界条件进行了理论分析,提出利用高密度、高强度的壳体材料提高弹药的不敏感度。利用AUTODYN软件建立射流冲击起爆战斗部仿真模型,仿真了壳体侵彻、炸药起爆的过程,获得了射流侵彻参数、壳体临界厚度等参数。仿真结果表明,以钨合金为壳体材料的战斗部最不敏感度,较45#钢提高了37.7%,较铝材料提高了60%。证明以高密度、高强度的材料为壳体的战斗部不敏感度明显提高。

In improving warhead survivability study, insensitive warhead is a new type of warhead, which is not easy to detonate under the worst situation. The traditional conventional ammunition casing material is steel, and diffi- cuh to resist the jet initiation, but no standards or references can be used to choice shell material to improve sensitivi- ty of ammunition. Thus, the jet initiation criterions of shell material parameters were deduced to propose that the shell with high density and yield stress can lower the warhead sensitivity. In order to respectively obtain the processed of shaped charge jet initiation warhead with POLYCARB, AL7039, STEEL 45 and TUNG. ALLOY shells, dynamics analysis software AUTODYD program was used. The results indicate that the TUNG. ALLOY shell covered explosive was most difficult to initiation, which increases by 37. 7% than 45 # steel, and increases by 60% than AL7039. It is proved that the warhead with higher density and strength material shell can improve insensitivity obviously.