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以某46m跨度的单层异型网壳为例,在利用MSTCAD软件完成网壳静力计算的基础上,充分利用MST-CAD软件提供的便利接口,自动生成ANSYS所需的数据格式文件进行建模.通过对两种软件振动模态的比较,证实了数据转换的正确性,之后利用ANSYS进行了屈曲模态分析,并完成了考虑初始缺陷的非线性稳定分析,采用弧长法得到了网壳的全过程荷载-位移曲线,求得各工况下的网壳屈曲临界荷载系数.
Taking a single 46m-span single-layer deformed reticulated shell as an example, the MSTCAD software is used to complete the static calculation of the reticulated shell. The convenient interfaces provided by the MST-CAD software are fully utilized to automatically generate the data format files required by ANSYS for modeling By comparing the vibrational modes of the two kinds of software, the correctness of the data conversion is confirmed, then the buckling modal analysis is carried out by ANSYS and the nonlinear stability analysis considering the initial defect is completed, and the reticulated shell Of the whole process of load - displacement curve obtained under various conditions of the shell buckling critical load factor.