基于离散网格的机电耦合问题分析  

Analysis of the coupled problems between structure and electromagnetism based on discrete meshes

作　　者：宋立伟[1] 郑飞[1] 

机构地区：[1]西安电子科技大学机电科技研究所,陕西西安710071

出　　处：《西安电子科技大学学报》2009年第2期347-352,384,共7页Journal of Xidian University

基　　金：国家重点基础研究发展规划(973计划)项目资助(61358)

摘　　要：针对机械结构与电磁场相互作用的问题,给出了其机电耦合问题的概念,并提出了一种基于相同离散网格求解结构和电磁场问题的机电耦合模型.该模型根据电磁分析精度对几何模型网格尺寸的要求,采用了迭代法加密网格来解决结构位移场引起的网格尺寸增大问题,进而利用矩量法准确分析结构位移场对电磁特性的影响.最后,将该模型应用于一个电磁散射问题和一个天线问题的案例.仿真结果表明,结构位移场对电磁场的影响不可忽视,可为结构设计和电气设计提供参考.To analyze the interaction between mechanical structure and electromagnetism,the concept of coupled problems and its mechanical-electromagnetic coupling model are presented.This model can be simulated based on the same discrete meshes.Because the required mesh sizes of the geometry are allowed due to the precision of electromagnetic analysis,the number of meshes is increased by the iterative method to decrease the increscent mesh sizes in the process of structural analysis.Then the effect of the structural distortion on electromagnetism can be obtained by the method of moment.Finally,the given model is applied in an electromagnetic scatting and an antenna＇s radiation.The obtained results prove that the effect of the structural distortion on electromagnetism is not negligible.This study can be used for the design of structure and electromagnetism.

关 键 词：机械结构 电磁场 机电耦合模型 离散网格 迭代法 矩量法 

分 类 号：TN823.27[电子电信—信息与通信工程] TN820.88