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- Title
Optimization and prefabrication of timber Voronoi shells.
- Authors
Hua, Hao; Hovestadt, Ludger; Tang, Peng
- Abstract
We introduce a variant of the timber grid shell, the timber Voronoi shell, whose surface is reticulated by Voronoi tessellation and whose edges are made of discrete dimensional timber. This work explores form-finding methods of the Voronoi shell as a compressive funicular shell. Two closed-form solutions to shape initialization are proposed. We develop methods for minimizing the deviation from coplanarity between timber members and adjacent surface normal in order to facilitate manufacturing. A well-defined fabrication process is important for making the physical structure consistent with the structural model. A 6-axis robot with a motor spindle is employed to prefabricate the timber so the in situ manual assembly becomes easier. A parametric model describes the joint details. We formulate the robotic toolpath as a closed-form function of the resultant mesh from form finding. Thus, a general-purpose programming language can directly implement the mesh optimization and manufacturing processes without CAD or CAM software. The physical implementations, including an exhibition pavilion, validated the approach.
- Subjects
TIMBER; COMPUTER-aided design software; STRUCTURAL models; PROGRAMMING languages; CAD/CAM systems; MANUFACTURING processes; ROBOT programming
- Publication
Structural & Multidisciplinary Optimization, 2020, Vol 61, Issue 5, p1897
- ISSN
1615-147X
- Publication type
Article
- DOI
10.1007/s00158-019-02445-x