Cell packing structures. (March 2015)

• Record Type: Journal Article
• Authors: Pottmann, Helmut; Jiang, Caigui; Höbinger, Mathias; Wang, Jun; Bompas, Philippe; Wallner, Johannes
• Is Part Of: Computer aided design. Volume 60(2015)
• Page Start: 70
• Page End: 83
• Publication Date: 2015-03
• Subjects: Architectural geometry -- Fabrication-aware design -- Spatial tiling -- Polyhedral packing -- Cell packing -- Polyhedral mesh -- Offset mesh -- Sphere packing -- Torsion-free support structure -- Shading system; Computer-aided design -- Periodicals; Engineering design -- Data processing -- Periodicals; Computer graphics -- Periodicals; Conception technique -- Informatique -- Périodiques; Infographie -- Périodiques; Computer graphics; Engineering design -- Data processing; Periodicals; Electronic journals; 620.00420285
• DOI: 10.1016/j.cad.2014.02.009
• Languages: English
• ISSNs: 0010-4485

Abstract

Abstract: This paper is an overview of architectural structures which are either composed of polyhedral cells or closely related to them. We introduce the concept of a support structure of such a polyhedral cell packing. It is formed by planar quads and obtained by connecting corresponding vertices in two combinatorially equivalent meshes whose corresponding edges are coplanar and thus determine planar quads. Since corresponding triangle meshes only yield trivial structures, we focus on support structures associated with quad meshes or hex-dominant meshes. For the quadrilateral case, we provide a short survey of recent research which reveals beautiful relations to discrete differential geometry. Those are essential for successfully initializing numerical optimization schemes for the computation of quad-based support structures. Hex-dominant structures may be designed via Voronoi tessellations, power diagrams, sphere packings and various extensions of these concepts. Apart from the obvious application as load-bearing structures, we illustrate here a new application to shading and indirect lighting. On a higher level, our work emphasizes the interplay between geometry, optimization, statics, and manufacturing, with the overall aim of combining form, function and fabrication into novel integrated design tools. Highlights: Recent and ongoing research in architectural geometry. Links between cell packing structures and discrete differential geometry. Applications, e.g. to shading and indirect lighting. Interplay of geometry, optimization, statics, manufacturing. Combining form, function and fabrication into novel design tools.