中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2016, Vol. 35 ›› Issue (5): 1-4.DOI: 10.3969/j.issn.1674-0696.2016.05.01

• 桥梁与隧道工程 •    下一篇

基于TetGen的箱梁三维四面体网格自动划分分析

王家林,段红俊   

  1. (重庆交通大学 土木工程学院,重庆 400074)
  • 收稿日期:2015-05-20 修回日期:2015-11-03 出版日期:2016-10-20 发布日期:2016-10-31
  • 作者简介:第一作者:王家林(1968—),男,重庆人,教授,博士,主要从事土木工程、结构力学方面的研究。E-mail:jialinwang@163.com。

Automatic Meshing of Box Girder Based on TetGen 3D Tetrahedral Element

WANG Jialin,DUAN Hongjun   

  1. (School of Civil Engineering,Chongqing Jiaotong University,Chongqing 400074,P.R.China)
  • Received:2015-05-20 Revised:2015-11-03 Online:2016-10-20 Published:2016-10-31
  • Contact: 段红俊(1991—),女,山东烟台人,硕士,主要从事土木工程、结构力学方面的研究。E-mail:1091782733@qq.com。

摘要: 以VC++为平台,利用四面体网格生成接口软件TetGen,研究了单箱单室变截面箱梁的高质量四面体网格生成方法。用多连通平面多边形面片描述横截面、用字符串函数描述箱梁截面上各特征点的坐标变化规律,将平面横截面面片映射为空间横截面面片,再自动生成相邻空间面片的连接面片,从而获得箱梁的空间多面体。利用四面体网格划分接口软件TetGen对箱梁空间多面体进行四面体网格剖分,自动生成高质量的四面体网格;通过将网格数据写为inp文件导入Abaqus 软件进行可视化检查和有限元计算验证了网格的有效性。

关键词: 桥梁工程, TetGen, 四面体网格, 三维实体网格划分

Abstract: Based on VC++ platform, the tetrahedral mesh generation interface software—TetGen was used to study high quality tetrahedral element generation method of box girder with varied cross section of generation single box with single cell. The girder cross section was described with facet of multiply connected plane polygon and letter and symbol string function was used to describe coordinate variation at respective feature points on the box girder cross section. First of all, it was mapped from plane cross-section facet to space cross-section facet. Secondly the connected facet of adjacent space facet was generated automatically, thus spacial polyhedron of box girder was achieved. The tetrahedral mesh generation interface software—TetGen was used to subdivide spacial polyhedron. High quality tetrahedron element was generated automatically. The network data was written in inp document which was subscribed in software Abaqus which allowed for visual inspection and verification of effectiveness of this grid.

Key words: bridge engineering, TetGen; tetrahedral mesh; the mesh of three-dimensional entity

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