An essential step for the realization of free-form surface structures is to create an efficient structural gird that satisfies not only the architectural aesthetics,but also the structural performance.Employing the ma...An essential step for the realization of free-form surface structures is to create an efficient structural gird that satisfies not only the architectural aesthetics,but also the structural performance.Employing the main stress trajectories as the representation of force flows on a free-form surface,an automatic grid generation approach is proposed for the architectural design.The algorithm automatically plots the main stress trajectories on a 3D free-form surface,and adopts a modified advancing front meshing technique to generate the structural grid.Based on the proposed algorithm,an automatic grid generator named "St-Surmesh" is developed for the practical architectural design of free-form surface structure.The surface geometry of one of the Sun Valleys in Expo Axis for the Expo Shanghai 2010 is selected as a numerical example for validating the proposed approach.Comparative studies are performed to demonstrate how different structural grids affect the design of a free-form surface structure.展开更多
阐述了细分方法的基本思想以及基于三角网格的 L oop细分模式的原理和方法 ;提出了在相关几何造型、有限元分析和动态仿真软件配合下 ,基于 Open GL环境或 CAD二次开发环境的复杂犁体曲面造型的细分方案 ;对犁体曲面的控制网格生成、边...阐述了细分方法的基本思想以及基于三角网格的 L oop细分模式的原理和方法 ;提出了在相关几何造型、有限元分析和动态仿真软件配合下 ,基于 Open GL环境或 CAD二次开发环境的复杂犁体曲面造型的细分方案 ;对犁体曲面的控制网格生成、边界限定等关键技术进行了讨论。利用该方法可以有效缩短复杂犁体曲面的造型、计算和分析时间。展开更多
基金Project(51378457)supported by the National Natural Science Foundation of China
文摘An essential step for the realization of free-form surface structures is to create an efficient structural gird that satisfies not only the architectural aesthetics,but also the structural performance.Employing the main stress trajectories as the representation of force flows on a free-form surface,an automatic grid generation approach is proposed for the architectural design.The algorithm automatically plots the main stress trajectories on a 3D free-form surface,and adopts a modified advancing front meshing technique to generate the structural grid.Based on the proposed algorithm,an automatic grid generator named "St-Surmesh" is developed for the practical architectural design of free-form surface structure.The surface geometry of one of the Sun Valleys in Expo Axis for the Expo Shanghai 2010 is selected as a numerical example for validating the proposed approach.Comparative studies are performed to demonstrate how different structural grids affect the design of a free-form surface structure.
文摘阐述了细分方法的基本思想以及基于三角网格的 L oop细分模式的原理和方法 ;提出了在相关几何造型、有限元分析和动态仿真软件配合下 ,基于 Open GL环境或 CAD二次开发环境的复杂犁体曲面造型的细分方案 ;对犁体曲面的控制网格生成、边界限定等关键技术进行了讨论。利用该方法可以有效缩短复杂犁体曲面的造型、计算和分析时间。
