论文部分内容阅读
首先比较了球面基本三角形网格的划分形式 ,最优网格划分法得到的网格三类型数量最少、最经济。提出了构造球面网壳局部双层形式的方法和五种具有工程应用价值的形式。采用几何非线性有限元理论 ,对几种网壳形式进行了深入的稳定分析、参数分析并与单层网壳的稳定特征进行了比较。本文研究结果对实际工程有重要应用价值
First of all, we compared the division form of the basic triangular mesh of the sphere, and the least amount of the three types of grids obtained by the optimal meshing method is the most economical. The method of constructing partial double-layer form of spherical reticulated shell and the five forms with engineering application value are put forward. Based on the geometric nonlinear finite element theory, several kinds of reticulated shells are analyzed in depth, the parameters are analyzed and compared with those of single-layer reticulated shells. The result of this paper has important application value to practical engineering