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应用有限元软件ANSYS分析了凯威特主-子巨型网格结构的力学性能。在考虑初始几何缺陷和几何非线性的情况下,利用牛顿—拉夫拉逊法分析结构的弹性稳定性能。在考虑几何非线性的情况下,分析结构的基本静力性能,总结桁架上下弦杆的应力分布规律。研究结构的矢跨比、立体桁架高度因子、支承方式等参数对桁架上下弦杆应力分布规律的影响。考虑主-子结构协同承载时的静力性能。为工程设计提供了参考。
The finite element software ANSYS was used to analyze the mechanical properties of the Kweit main-sub giant mesh structure. In considering the initial geometric defects and geometric nonlinearity, the elastic stability of the structure is analyzed by Newton-Raphson method. Considering the geometric nonlinearity, the basic static performance of the structure is analyzed and the stress distribution of the upper and lower chords of the truss is summarized. The influence of the parameters such as the span ratio of the structure, the height factor of the truss and the supporting method on the stress distribution of the upper and lower chords of the truss was studied. Consider the static performance of the main-substructure with load-bearing. For engineering design provides a reference.