改进短程线网壳结构的构建方法及稳定性分析

Analysis of construction method and stability of improved geodesic reticulated shell structure

网壳结构中某杆件长度为主要长度规格,以此长度为基本长度,不断划分球壳,得到一种新型网壳结构,称为改进短程线网壳结构.对改进短程线网壳结构的建模原理、力学特性与网格特性进行研究,可以由两种方法得到该结构的三维模型,考虑几何和材料非线性时的稳定承载力也较现有网壳结构高,杆件长度规格最少,值得进一步推广和研究.

The length of a rod in the reticulated shell is the main length specification. With this length as the basic length, the spherical shell is continuously divided to obtain a new type of reticulated shell structure, which is called improved geodesic reticulated shell structure. The modeling principle, mechanical property and mesh characteristics of the improved geodesic reticulated shell structure are studied. A three-dimensional model of the structure can be obtained by two methods. Considering the geometrical and material nonlinearity, the stability bearing capacity of the improved geodesic reticulated shell structure is better than that of the existing reticulated shell structure. The length of the rod has the least count, so it is worth further promotion and research.