摘要
依据周期结构复合材料等效电磁参数的均匀化方法,推导了此类结构等效电磁参数的有限元计算公式;并对介质框和介质方柱周期结构复合材料的等效介电常数进行了有限元求解,给出了这两类周期结构等效电磁参数的高精度拟合公式。数值算例表明这种有限元均匀化方法是可靠高效的,能够为周期结构复合材料的等效电磁参数预测和设计提供均匀化计算方法。
For evaluating effective electromagnetic properties of composites with periodic structures, homogenization method and its finite element equations are deduced in this paper. Effective dielectric constants of frame and square pole composite with periodic structures are solved by finite element homogenization method. Some closed-form expressions for effective dielectric constants are presented to simplify the homogenization evaluation of effective material properties of these composites. Numerical experiments show that the homogenization method by finite element equations is efficient and reliable in forecast and design of electromagnetic properties.
出处
《电波科学学报》
EI
CSCD
北大核心
2009年第2期280-284,292,共6页
Chinese Journal of Radio Science
基金
国家自然科学基金(No.10477018)
西北工业大学创新基金(No.W016143)
关键词
周期结构复合材料
等效电磁参数
均匀化方法
periodic composite
effective electromagnetic properties
homogenization method
