四边形有限元网格生成方法关键技术  

Key Technologies of Automatic Quadrilateral Finite Element Mesh Qenerator

作　　者：郭晓霞[1] 孙卫和[1] 

机构地区：[1]深圳职业技术学院机电工程学院,广东深圳518055

出　　处：《深圳职业技术学院学报》2004年第3期26-29,共4页Journal of Shenzhen Polytechnic

基　　金：山西省自然科学基金资助项目(20001052)

摘　　要：本文对四边形网格生成法中的边界偏移、最优分割线确定等关键技术作了改进。在该方法中,用户只需指定区域的边界以及边界上的单元尺寸,就可以生成疏密自然过渡的四边形网格。它可与二维刚塑性有限元程序集成为具有网格自动重分功能的有限元模拟系统。利用系统对火车车轮预成形过程进行了模拟,结果表明该网格生成法通用性强,自动化程度高。The paper describes the development of an automatic, 2D quadrilateral element mesh generator. The key is that the domain to be meshed is subdivided finitely until only quadrilateral elements are left. Some techniques concerning linear discretization, identifying best splitting line are improved in detail. The users need only designate the boundary of the region and preferred element size along the boundary before the mesh, quadridlateral mesh with some transition elements connecting the finer and coarser areas of mesh is generated. The present mesh generator has been integrated into the system capable of rezoning automatically with a 2D rigid-plastic FEM program. An application on railroad wheel is given.

关 键 词：有限元 四边形网格 网格自动划分 

分 类 号：TG302[金属学及工艺—金属压力加工]