摘要
按相贯线裁剪制作结构模型,可大量节省构件连接时的材料用量,是结构模型质量优化的一个重要途径。讨论了在模型制作过程中常见的两杆相贯和三杆相贯的情况,利用圆柱坐标矩阵旋转变换的方法,构建了相贯线及其展开曲线的方程,分析了使用相贯线进行杆件剪裁的方法,将该方法应用于结构模型制作过程,可使模型在质量上得到了很大优化。
Weight is an important indicator to evaluate a model in structure model design contest. Intersecting curve cutting is an efficient way to save material content. This method is widely used in plate work. In this paper, how to use the method of intersecting curve cutting to make paper structure model is discussed. Two cases are analyzed that is two intersecting pipes and three intersecting pipes. The geometric relationship and coordinate transformation are used to derive the expansion formula. The developed curve of intersecting curve can be drawn accurately and conveniently. Practice of model-making process shows the model has been greatly optimized in weight.
出处
《图学学报》
CSCD
北大核心
2015年第1期12-16,共5页
Journal of Graphics
基金
华北水利水电大学高层次人才科研启动资助项目
华北水利水电大学本科教学工程资助项目
关键词
结构模型
节点
相贯线
展开曲线
坐标变换
structure model
joint
intersecting line
developmental curve figure
coordinate transformation
