串联战斗部采用前后两级战斗部先后爆炸的方式击穿爆炸反应装甲和坦克主装甲。为防止前级战斗部爆炸时破坏后级战斗部，需要设置可靠级间隔爆体。隔爆体的隔爆性能受到与前级距离、材料、结构等方面的综合影响。主要研究了不同材料隔爆体的隔爆性能，利用有限元分析软件LS-DYNA建立了前级战斗部与隔爆体的数值仿真模型，得到了级间隔爆材料对隔爆性能的影响规律。结果表明：针对单一材料隔爆体，采用聚氨酯等软质材料无法满足强度要求；采用硬质高强度材料，其波阻抗越高，隔爆体所需厚度越低；针对组合材料隔爆体，采用逆序波阻抗的组合材料可以大幅度降低隔爆体质量，其中以碳纤维复合材料+有机玻璃组合降低质量的能力最为显著。研究结论可为串联战斗部隔爆体的材料选型设计提供指导。

The tandem warhead penetrates the explosive reaction armor and the main armor of the tank with the detonation of the front and rear warheads. In order to prevent the destruction of the rear warhead when the front warhead explodes, it is necessary to set up an explosion-proof body between the front and the rear warheads. The explosion-proof effect of the explosion-proof body is affected by the distance from the front stage, material, structure and so on. The explosion-proof effect of the explosion-proof body with different materials was researched, the finite element analysis software LS-DYNA was used to establish the numerical simulation model of series warhead and explosion-proof body, the effect law of explosion-proof material on explosion-proof effect was obtained. The results show that low impedance materials such as polyurethane can not meet the strength requirements. For high impedance materials, the higher impedance is, the lower the thickness is. The combination of high and low impedance matching materials can greatly reduce the quality of explosion-proof materials, among which the combination of carbon fiber composite and PMMA has the most significant ability to reduce the quality of explosion-proof body. This study can provide guidance for material selection and design of the explosion-proof body for the tandem warhead.