Field-aligned mesh joinery

Cignoni, Paolo; Pietroni, Nico; Malomo, Luigi; Scopigno, Roberto

doi:10.1145/2537852

Cited by 69 publications

(53 citation statements)

References 43 publications

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“…Generating such scaffolds for highly non-convex shapes, such as the bunny or armadillo, is more difficult. While 123D Make generates two families of planar contours orthogonal to each other, the works of Cignoni et al [2014] and construct scaffolds from planar pieces cut at arbitrary angles to one another; these works can hopefully be extended to provide sufficiently strong scaffolds for our fabrication process.…”

Section: Discussionmentioning

confidence: 99%

Wire mesh design

et al. 2014

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Figure 1: Wire mesh design allows creating physical realizations (1 st and 5 th images) of a given design surface (2 nd and 4 th images) composed of interwoven material (middle image) in an interactive, optimization-supported design process. Both the torso and the Igea face are constructed from a single sheet of regular wire mesh. AbstractWe present a computational approach for designing wire meshes, i.e., freeform surfaces composed of woven wires arranged in a regular grid. To facilitate shape exploration, we map material properties of wire meshes to the geometric model of Chebyshev nets. This abstraction is exploited to build an efficient optimization scheme. While the theory of Chebyshev nets suggests a highly constrained design space, we show that allowing controlled deviations from the underlying surface provides a rich shape space for design exploration. Our algorithm balances globally coupled material constraints with aesthetic and geometric design objectives that can be specified by the user in an interactive design session. In addition to sculptural art, wire meshes represent an innovative medium for industrial applications including composite materials and architectural façades. We demonstrate the effectiveness of our approach using a variety of digital and physical prototypes with a level of shape complexity unobtainable using previous methods.

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Section: Discussionmentioning

confidence: 99%

Wire mesh design

et al. 2014

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“…Several techniques have been proposed to design paper craft objects [Mitani and Suzuki 2004], plush objects [Mori and Igarashi 2007], and objects made of interlocking planar slices [Cignoni et al 2014;Schwartzburg and Pauly 2013;Hildebrand et al 2012]. Other techniques use geometric techniques to change surface appearance by synthesizing surface microgeometry [Weyrich et al 2009] or changing the shape to generate custom target caustics [Schwartzburg et al 2014].…”

Section: Fabrication and Computer Graphicsmentioning

confidence: 99%

Elastic textures for additive fabrication

et al. 2015

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Figure 1: Six basic elastic textures are used to obtain a large range of homogenized isotropic material properties. A 3 × 3 × 1 tiling of each pattern is shown, along with rendered (left) and fabricated (right) cell geometry below. The naming convention is explained in Section 4. AbstractWe introduce elastic textures: a set of parametric, tileable, printable, cubic patterns achieving a broad range of elastic material properties: the softest pattern is over a thousand times softer than the stiffest, and the Poisson's ratios range from below zero to nearly 0.5. Using a combinatorial search over topologies followed by shape optimization, we explore a wide space of truss-like, symmetric 3D patterns to obtain a small family. This pattern family can be printed without internal support structure on a single-material 3D printer and can be used to fabricate objects with prescribed mechanical behavior. The family can be extended easily to create anisotropic patterns with target orthotropic properties. We demonstrate that our elastic textures are able to achieve a user-supplied varying material property distribution. We also present a material optimization algorithm to choose material properties at each point within an object to best fit a target deformation under a prescribed scenario. We show that, by fabricating these spatially varying materials with elastic textures, the desired behavior is achieved.

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“…Often, these abstractions are motivated by fabrication constraints of the underlying fabrication method, such as the milling of height fields [Weyrich et al 2007], the laser cutting of planar elements [Hildebrand et al 2012;Cignoni et al 2014], or the use of a specific material or primitives, such as plastic pipes [Sageman-Furnas et al 2015], in the process.…”

Section: Previous Workmentioning

confidence: 99%

“…For many of these structures, finding valid assembly sequences is a non-trivial problem, and has been investigated in the context of 3D puzzles [Song et al 2012], jigsaw puzzles [Lau et al 2014], interlocking figures consisting of planar elements [Hildebrand et al 2012;Cignoni et al 2014], and furniture assembly [Fu et al 2015]. Deuss et al [2014] computed a work-minimizing assembly sequence for self-supporting structures that are composed of bricks or stone blocks without any mortar.…”

Section: Previous Workmentioning

confidence: 99%

Computational design of stable planar-rod structures

2016

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Figure 1: Given a set of planar input contours (left), our system computes a stable, self-supporting wire sculpture. The physical prototype (right) can be easily fabricated using a 2D wire bending machine and assembled without the need of connectors between crossing wires. AbstractWe present a computational method for designing wire sculptures consisting of interlocking wires. Our method allows the computation of aesthetically pleasing structures that are structurally stable, efficiently fabricatable with a 2D wire bending machine, and assemblable without the need of additional connectors. Starting from a set of planar contours provided by the user, our method automatically tests for the feasibility of a design, determines a discrete ordering of wires at intersection points, and optimizes for the rest shape of the individual wires to maximize structural stability under frictional contact. In addition to their application to art, wire sculptures present an extremely efficient and fast alternative for low-fidelity rapid prototyping because manufacturing time and required material linearly scales with the physical size of objects. We demonstrate the effectiveness of our approach on a varied set of examples, all of which we fabricated.

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Field-aligned mesh joinery

Cited by 69 publications

References 43 publications

Wire mesh design

Wire mesh design

Elastic textures for additive fabrication

Computational design of stable planar-rod structures

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