强电磁脉冲下车辆线束快速等效方法

Fast equivalent method for vehicle cables under high intensity electromagnetic pulse illumination

线束电磁耦合效应的快速等效方法是传统等效线束方法的一种近似,即在一定观察距离之外,线束的电磁效应可近似等效为一根线缆。与传统方法相比,线束分组方法具有较大的简化,从而进一步缩短了计算时间和所需内存。本文进一步研究了全波分析下快速方法的适用性,并将快速等效算法用于车辆线束,根据实际情况使用CST线缆工作室软件仿真讨论了强电磁脉冲辐照下,接地面电导率和非均匀地起伏高度因素对线束快速等效建模方法的影响,验证了等效方法的适用性;最后将快速算法应用至车内线束典型位置处进行建模分析,取得了良好的等效精度,验证了快速等效算法的实用性。

Fast equivalent cable bundle model is an approximate to traditional equivalent cable bundle method(ECBM),which the electromagnetic behavior of the cable bundle can be equivalent to only one cable if observed from a certain distance away.Compared with ECBM,cable grouping process is greatly simplified therefore could further save computation time and memory.In this paper,the effectiveness of fast equivalent method in full wave analysis is further investigated,and then the fast method is applied to vehicle cables to test its applicability using CST software.The influence of conductivity of ground plane and the height of irregular ground are considered according to real applications under high intensity electromagnetic pulse illumination.Finally the fast method is applied to typical locations of vehicle model and fairly good equivalent precision are achieved to show its practicability.