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An automatic grid generation approach over free-form surface for architectural design

Journal of Central South University 2014年第6期21卷 2444-2453页

作者：苏亮祝顺来肖南高博青 Department of Civil Engineering Zhejiang University Zhejiang Provincial Key Laboratory of Space Structures

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 *** 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 *** 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 *** on the proposed algorithm,an automatic grid generator named "St-Surmesh" is developed for the practical architectural design of free-form surface *** 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 *** studies are performed to demonstrate how different structural grids affect the design of a free-form surface structure.

关键词： grid generation free-form surface structure architectural geometry stress trajectory advancing front meshing technique

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Framework for automatic generation of facades on free-form surfaces

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Frontiers of architectural Research 2017年第3期6卷 273-289页

作者： Diego Andrade Mikako Harada Kenji Shimada Mechanical Engineering Department Carnegie Mellon University Pittsburgh PA 15213 United States Autodesk Manchester NH 03101 United States

New design tools have created a growing interest for presenting complex geometries and patterns. The need to form curved geometries of facades, without incurring high construction costs and time increases, presents one of the most complex design challenges for any project. In this paper, we present and demonstrate a new computational framework for the creation of patterns on top of facades, via cladding of panels and honeycomb structures. The tool describes a given region on a base model; dealing particularly with location, size and orientation of general geometric features on the surface of such model. The user inputs curves that manifest the desired user＇s intention for the panels and a set of seed features that correspond to the initial boundary conditions of a Riemannian metric tensor field. The system interpolates the tensors defined by input features and input curves by solving a Laplace-Beltrami partial differential equation over the entire domain. We show a fast clustering and search operations for correct panel utilization based on size quantization as design variable and implemented via Voronoi segmentation. We present honeycomb structures that can be retrieved from the fundamental mesh producing another option for facade creation and ideation. The system connects to a geometric modeling kernel of a commercial CAD package; the system places features on top of the base model facade using boolean operations from the core geometdc engine via its programming interface calls. With this computational tool, thousands of dad panels can be visualized and developed within minutes.

关键词： Computer graphics Eltipsoidal packing Supporting structures architectural geometry Computationat geometry Generative designalgorithms

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