Open AccessNumerical simulation of equivalent electromagnetic parameters of composite material
Author(s) -
Ding Shi-Jing,
Ge De-Biao,
Shen Ning
Publication year - 2010
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.59.943
Subject(s) - finite difference time domain method , transmission line matrix method , materials science , composite number , reflection coefficient , reflection (computer programming) , electromagnetic radiation , computer simulation , mathematical analysis , electromagnetic field , optics , physics , computational electromagnetics , mathematics , mechanics , computer science , composite material , quantum mechanics , programming language
The numerical reconstruction scheme of equivalent electromagnetic parameters for composite material is proposed based on the finite difference time domainFDTD method. To study the relationship between equivalent electromagnetic parameters and the bulk density of mixed medium, the reflection coefficient and transmission coefficient were firstly calculated by the FDTD method, and then the equivalent electromagnetic parameters were reconstructed by genetic algorithm and propagation matrix method under different blending ratios. When the blending ratio of composite material is low or high,the equivalent electromagnetic parameters calculated by the equivalent constitutive parameter formulas and numerical reconstruction scheme agree well with each other. The results are somewhat different only for the middle blending ratio. The results show the feasibility of the proposed numerical scheme for the reconstruction of equivalent electromagnetic parameters of composite material.