摘要
在电磁场的数值计算中,一般采用有限元法进行模拟仿真。但由于传统有限元法系统解的精度受剖分单元数目以及计算阶数复杂程度的影响,使得有限元法的计算效率并不高。为了提高电磁场数值计算效率,在有限元法中引入梯度光滑操作,提出一种新型基于边的光滑有限元算法,利用Matlab对长直接地金属槽和电动车整车二维电/磁场两个算例进行编程仿真分析。结果表明梯度光滑操作能使离散系统更接近连续系统,计算精度和计算效率都得到明显的提高。
The FEM has been widely adopted to solve electromagnetic field problems. The accuracy of FEM is highly effected by the number of system units and the complexity of computational order,leading to low computational efficiency. In order to improve the computational efficiency of FEM,gradient smooth is introduced into numerical calculation of electromagnetic field,then a new method of ES-FEM is proposed. The electromagnetic field of infinite straight grounding slot and Electric Vehicle are simulated with MATLAB. The results shows that smooth gradient operation makes the discrete system closer to the continuous system,increasing the accuracy and the efficiency of FEM.
作者
聂昕
李永利
何智成
NIE Xin;LI YongLi;HE ZhiCheng(State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, China)
出处
《机械强度》
CAS
CSCD
北大核心
2018年第2期378-383,共6页
Journal of Mechanical Strength
基金
国家自然科学基金(61540031)
广西区科技计划项目(1348005-1
14122005-7)资助~~
关键词
基于边的光滑有限元法
梯度光滑
电动车电磁场
数值计算
Edge-based smoothed finite element method （ES-FEM）
Gradient smooth
Electric vehicle electromagnetic field
Numerical calculation
