一种新的钢筋薄膜组合单元及其网格自动生成  

A new reinforcement membrane embedded finite element model and its automatic mesh generation

作　　者：汪基伟[1] 冷飞[2] 

机构地区：[1]河海大学土木工程学院,南京210098 [2]大连理工大学土木水利学院,大连116024

出　　处：《计算力学学报》2007年第2期236-240,共5页Chinese Journal of Computational Mechanics

基　　金：江苏省水利科技项目(2001170);河海大学院士基金(HHYS003)资助项目

摘　　要：提出了一种新的钢筋薄膜组合单元模型和薄膜单元结点信息生成技术。该模型能考虑任意方向的钢筋薄膜,使得单元网格的划分不必考虑钢筋的方位,克服了现有钢筋薄膜组合单元所存在的缺陷。应用本文提出的薄膜结点生成技术,只要给出钢筋薄膜四个角点的坐标,即可自动形成薄膜单元在组合单元中的信息。算例表明该模型方便可行,单元划分效率高,且能达到相当的精度。A new reinforcement membrane embedded finite element model and the technique of its automatic mesh generation are presented. Because reinforcement membranes in the embedded element can be in arbitrary directions, the position and direction of reinforcement needn＇t be taken into account when using the model to subdivide a structure, and limitations of existing models, such as the fixed steel bar position, are overcome. Using the technique of automatic mesh generation, the information of membranes in the embedded elements can be generated automatically after the coordinates of its four corners are put in. Examples show the model is applicable and effective.

关 键 词：钢筋混凝土 三维 有限单元模型 网格生成 

分 类 号：O241[理学—计算数学]