网壳结构的指示矩阵算法

网壳结构作为一种新颖的建筑型体.在我国已开始得到重视并用于实际工程.但由于网壳结构形体的多变性和众多单元数量,当用计算机进行结构分析和设计时,前期工作量很大.因此,本文在分析了网壳结构形体的基础上,提出了结构的成形策略,并引进了一套易在计算机上实施的、指示结构几何构成的算法,用指示矩阵算法实现了网壳结构的前处理.使用结果表明,本法简单、正确、有效,是用于结构前处理的一种较为系统的方法.

Implementation of Indicating Matrix Algorithms in Analyzing Reticulated Structures

With the rapid development of computation technique and application of FEM to the analysis of reticulated structures, the pre-processing has become an important aspect in computation. Formex Algebra presented by Doc. H. Nooshin, University of Sarry in U. K. has provided a systematic and effective method for pre-processing of engineering structure. On the basis of analyzing the topology, of reticulated shells. the authors present a method of indicating matrix which can implement pre-processing of reticulated shells. According to the characteristics of reticulated shells, some algorithms and rules. which can conveniently be implemented on computer, are provided for indicating the structural topology. Practice shows that this method is convenient and efficient.