复合材料地雷壳体超宽带脉冲屏蔽效能计算与实验

Numerical simulation and experimental study of shielding effect of landmine shell made with composite material to UWB electromagnetic pulse

采用不锈钢纤维作为聚酰胺的导电填料,通过注塑工艺制备复合材料地雷壳体。在壳体内部放置电子引信并连接电点火头,于微波暗室中进行峰值功率为1GW的超宽带电磁脉冲辐射下的毁伤效应实验。超宽带脉冲能量主要分布在10MHz～2GHz范围内,当壳体放置天线前的距离>0.5m时,内部的电子引信能正常工作;数值计算表明完整壳体的屏蔽效能>25dB,与实验结果相一致。当壳体存在单个直径<4.5mm圆孔时,实验结果与数值计算均表明其对屏蔽效能影响微小。复合材料壳体有助于提高电子引信地雷在战场高功率电磁环境下的生存能力。

A new kind of composite material was prepared by using stainless steel fibers to fill polyamide resin and columned shells were made with it.When electronical fuzes connected with electrical fire head were fit under the shell in the microwave anechoic chamber,experiments of damage effect of UWB electromagnetic pulse radiation with peak power of 1GW were conducted.The frequency band of pulse energy was mostly between 10MHz to 2GHz.When the distance between shell and antenna was more than 50cm,the fuze in the shell could work normally.Numerical calculation results showed that the shielding effect was more than 25dB,and the experiment results were in agreement with them.When shells had single hole with a radius of less than 4.5mm,both experiment and numerical calculation results showed that holes had minute influence on shielding effect.Shells made with composite material could promote the viability of landmines with electronical fuze in high power electromagnetic environment.