三维有限元网格自动剖分的断面节点控制法  

Method of section-node control for mesh auto-generation in 3-D FEM analysis

作　　者：赵坚[1] 盛金昌[1] 速宝玉[1] 张祝添[1] 

机构地区：[1]河海大学,江苏南京210024

出　　处：《长江科学院院报》2000年第4期34-37,共4页Journal of Changjiang River Scientific Research Institute

基　　金：九五攻关课题! ( 96 - 2 2 1- 0 5- 0 3- 0 1)

摘　　要：针对计算对象为复杂地层和有大型地下洞室群时 ,自动形成三维有限元计算网格较为困难的情况 ,提出了三维网格自动剖分的“断面节点控制法”。该法以地质勘探剖面图作为主控制断面 ,并在主控制断面上完成少量的前期数据准备 ,通过不同的合并、连接和插值 ,在全计算域上一次形成计算空间网格。多个工程计算实例表明 ,该法运用简单、适应性强、效率较高。In the paper,the method of section node control is first proposed to solve the problem of 3 D mesh auto generation in FEM analysis when geological strata are complicate and large scale underground grottos are excavated.The geological exploratory sections are used as chief control sections,in which a small amount of data preparation is needed.The 3 D mesh is generated in the whole calculating region by means of different mergences,linkages and interpolations.Several engineering calculation illustrations show that this method is simple,more applicable and efficient.

关 键 词：有限元 网格 断面节点控制法 地质勘探 

分 类 号：TU12[建筑科学—建筑理论]