复合材料飞机电磁环境的多尺度分析  

Multiscale Analysis of the Electromagnetic Environment of Composite Aircraft

作　　者：毛煜茹 孙鹏 MAO Yuru;SUN Peng(School of Information and Communication Engineering,North University of China,Taiyuan 030051,China)

机构地区：[1]中北大学信息与通信工程学院,山西太原030051

出　　处：《山西大学学报（自然科学版）》2023年第5期1149-1157,共9页Journal of Shanxi University(Natural Science Edition)

基　　金：国家自然科学基金(62105305);山西省自然科学基金(20210302123068);山西省自然科学基金(202203021212141)。

摘　　要：复合材料飞机电磁环境的分析属于多尺度,电大尺寸问题,采用传统数值方法会引起离散化剖分的奇异性问题。文章提出了一种基于薄层阻抗边界条件的多尺度分析方法,在该方法中,首先采用全波频域方法在微观尺度下计算复合材料的电磁响应,考虑其材料、结构和厚度等参数的影响,并将其等效为具有相同电磁响应的边界条件;其次将此等效边界条件引入到复合材料飞机电磁响应的计算过程中,在宏观尺度下用全波频域方法计算整个飞机的电磁环境。多尺度分析方法无须对复合材料飞机蒙皮进行电磁离散化,解决了网格剖分的奇异性问题,实现复合材料飞机电磁环境的数值研究。The electromagnetic environment analysis of composite aircraft is a multi-scale engineering problem.The usage of con-ventional methods in the numerical analysis of composite aircraft can result in singularity problem due to the mesh of microstruc-ture.In this work,a multi-scale method based on thin layer impedance boundary conditions is presented.In the presented method,the electromagnetic characteristics of composite materials are numerically calculated by full-wave frequency domain method at the micro-scale,which considers the influence of the parameters such as material,structure and thickness.Then,the equivalent admit-tance of single-layer or multi-layer composite materials is calculated by the method proposed in this work,which is considered as lumped boundary condition extended to the electromagnetic modeling and the simulation of the whole aircraft with full-wave fre-quency domain method.The usage of multi-scale method may avoid the singularity problem caused by the mesh,and thus leading to the reduced computational complexity.As an example,the electromagnetic environment of composite aircraft is evaluated.

关 键 词：复合材料飞机 多尺度等效方法 薄层边界条件 电磁环境 

分 类 号：TN82[电子电信—信息与通信工程]