钢筋混凝土有限元分析的图形前处理

Preprocessor of Reinforced Concrete FEM Analysis

在钢筋混凝土有限元分析中 ,钢筋单元与混凝土单元相连的粘结单元的编号直接影响有限元刚度矩阵的大小。在现行的分析中 ,单元剖分软件大多采用FORTRAN语言编写 ,单元数据存储采用数组方式 ,粘结单元编号的差值很大 ,造成有限元刚度矩阵的增大。笔者按照面向对象的程序设计方法 ,建立了有关描述有限元分析前处理的图形类、路径、点 ,用链表方式实现图形中点、路径的链接 ,方便的实现了图形的复制、移动、组合等功能 ,同时实现了粘结单元的连续编号 。

Reinforcing element and concrete element have effects on the order of the stiff-matrix of the reinforce-concrete FEM. The program divided the elements is programmed by FORTRAN language in current analysis, and the data of the elements are stored by the array. The stiff-matrix of the reinforce-concrete FEM is extended by the large residual between the serial numbers of the nodes of cohering element. This paper establishes the graph class, path class and point class via objectoriented programming. The storage of the points and the paths by the chain structure realization of copying graph, moving graph, adding graph, continuously numbering the cohering elements are built. This paper presents the example of the dividing domain with the crack.