双层筒形网壳的指示矩阵算法

Indicator Matrix Algorithm for Double-layer Lattice Barrel Vaults

双层筒形网壳的指示矩阵算法是基于将结构的形体用矩阵的形式来表示的一种算法;它引进一整套节点及杆件信息的表示法,从而能自动形成结构的节点序号及单元编号,自动生成描写结构节点、单元、边界条件和荷载向量等数据结构.指示矩阵算法适用于各种形式的网壳结构,极大地简化了计算机分析的前处理工作.

Indicating matrix algorithm for double-layer lattice barrel vaults is a kind of mathematical system expressing the structural configuration with matrix forms. It introduces a set of representation of node and element information, accomplishes node and element numbering automatically, and forms the data structures describing the node, element, boundary condition, and load vector and so on. It is suitable to different kinds of double-layer lattice barrel vaults and simplifies the pre-processing of computer aided analysis.