基于模糊技术的三维电磁场有限元网格生成

利用模糊数学理论，提出了一种新的三维电磁场有限元网格生成方法。首先根据现场资源确定合理的单元与节点总数，并根据纵横向尺寸比确定基平面节点总数和纵向剖分层数。然后将离散区域划分为不同子区域，利用现有的知识和专家经验建立不同子区域的剖分密度方式，根据模糊数学中隶属函数对子域密度方式进行叠加，生成总体区域密度方式，从而在基平面形成疏密合理的二维网格。最后通过基平面逐层延拓，形成三维网络。由于充分利用了列

Automatic Mesh Generation for 3-D Electromagnetic Field Based on Fuzzy Set Theory

A new method for automatic finite element mesh generation of 3 D electromagnetic field problem is proposed by using fuzzy set theory,by which expert experiences on mesh generation can be fully used and reasonable 3 D meshes can be generated rapidly.First,the number of nodes and elements of the discretized domain and corresponding datum plane of the problem are calculated according to the computational resources on hand.Second,the domain is divided into various subdomain which local nodal patterns are determined a priori based on theories and past experience of experts on FEM and stored in the database.Then the mesh pattern of the domain can be obtained by the superposition of all local nodal patterns.Finally,the mesh generation of 3 D domain can obtained by extending that of datum plane.