The design challenge here is to realize an flexible model which can generate new parts with the configuration of scales and layouts. Based on that scope,\u00a0 every scale should be computed based on given parameters, namely Building length, Building Hight, Building width, Span in X direction, Span in Y direction, Span in Z direction. The parameters is shown in the figure below.<\/p>\n
Chart 1.\u00a0 design parameters<\/p>\n
To achieve that goal, it is not enough to use nodes in the Dynamo toolbox. As a result, python scripts are introduced to manipulate this high flexible structure. The node array, which is shown in the figure below, can be easily generated with a three-layer loop statement. Figure 1. node array<\/p>\n The next challenge is to draw inner lines based on the node array. It’s very intuitive to figure out that lines can be generated with matched points from opposite sides. However, the schemes of linking part will lead to different performances of the model.<\/p>\n \u00a0\u00a0 Figure 2. original scheme\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Figure 3. optimized scheme<\/p>\n Figure 2 shows the code in the 2nd assignment, which is simplistic in logics but\u00a0 of substantial computation costs. The total computation number is<\/p>\n \u00a0 Therefore, the model is very likely to freeze when the number of nodes is getting larger. While in the optimized version, this number is declined to<\/p>\n \u00a0 Because paired points will be disposed, the times of computation is considerably decreased.<\/p>\n High Performance Criteria<\/strong><\/p>\n The three high performance criteria are total stiffness, material usage and available space. To achieve a high ratio of available space, the components need to be slim while they undermine the stiffness of the building. The material usage also correlate to the total cost. Therefore, they are conflicted.<\/p>\n Figure 4. Schematic of distributed shear force and moment<\/p>\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0The computation is simplified based on the analogous dimension of each span.<\/p>\n All these parameters and geometries constitute this Dynamo BIM model.<\/p>\n![\"snipaste_2022-02-13_16-07-30\"](\"http:\/\/141.23.68.248\/wp\/wp-content\/uploads\/2022\/02\/Snipaste_2022-02-13_16-07-30.png\")
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<\/a><\/li>\n<\/ul>\n\n
3.\u00a0Logic of the parametric model:<\/h2>\n