摘要
短程线型球面网壳的杆长和杆件夹角最为均匀 ,杆件受力合理 根据短程线的原理 ,以在球面上的 2 0个等边球面三角形为基础 ,利用弦均分法 ,将直角坐标和球坐标相结合 ,提出了一种短程线球壳的建模方法 .利用该法 ,用户仅需输入几个控制参数即可自动生成所需模型 。
Geodesic reticulated shell is characteristed by even length, symmetrical angle of bars and well distribution of stress. Based on the theory of geodesic and used by average of chord, a method for modeling geodesic reticulated shell is put forward that combines orthogonal coordinate with spherical coordinate. The model is created automatically after parameters are inputted from interface. It is a part of preliminary process as the base for optimal design and post process.
关键词
测地线
网格
球面坐标
计算机辅助设计
Geodesics
Grids
Spherical coordinates
Computer aided design
