Design and fabrication of flexible rod meshes

Pérez, Jesús; Thomaszewski, Bernhard; Coros, Stelian; Bickel, Bernd; Canabal, José A.; Sumner, Robert W.; Otaduy, Miguel Á.

doi:10.1145/2766998

Cited by 97 publications

(62 citation statements)

References 42 publications

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“…However, appearance of the original model cannot be preserved as many holes are generated when using microstructures to design the elasticity of a printed model. Similar problems happen in [PTC*15], where the flexibility of a model is realized by a network of linked rods with different diameters. We do not suffer from the problem of appearance damage as the bending elasticity is designed in our framework by interior non‐uniform hollowing.…”

Section: Related Workmentioning

confidence: 61%

Data‐Driven Bending Elasticity Design by Shell Thickness

Zhang

et al. 2016

Computer Graphics Forum

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We present a method to design the deformation behavior of 3D printed models by an interactive tool, where the variation of bending elasticity at different regions of a model is realized by a change in shell thickness. Given a soft material to be used in 3D printing, we propose an experimental setup to acquire the bending behavior of this material on tubes with different diameters and thicknesses. The relationship between shell thickness and bending elasticity is stored in an echo state network using the acquired dataset. With the help of the network, an interactive design tool is developed to generate non‐uniformly hollowed models to achieve desired bending behaviors. The effectiveness of this method is verified on models fabricated by different 3D printers by studying whether their physical deformation can match the designed target shape.

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Section: Related Workmentioning

confidence: 61%

Data‐Driven Bending Elasticity Design by Shell Thickness

Zhang

et al. 2016

Computer Graphics Forum

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“…Instead of using metal wire, the works of [HZH*16,WPGM16] address the creation of feasible fabrication sequences for general rod meshes produced via thermoplastic extrusion. In [SFG*13,PTC*15, RA15], surfaces are represented with rod and beam structures of different properties. However, these approaches do not consider packability or spring representations.…”

Section: Related Workmentioning

confidence: 99%

Packable Springs

Wolff

Poranne

Glauser

et al. 2018

Computer Graphics Forum

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Laser cutting is an appealing fabrication process due to the low cost of materials and extremely fast fabrication. However, the design space afforded by laser cutting is limited, since only flat panels can be cut. Previous methods for manufacturing from flat sheets usually roughly approximate 3D objects by polyhedrons or cross sections. Computational design methods for connecting, interlocking, or folding several laser cut panels have been introduced; to obtain a good approximation, these methods require numerous parts and long assembly times. In this paper, we propose a radically different approach: Our approximation is based on cutting thin, planar spirals out of flat panels. When such spirals are pulled apart, they take on the shape of a 3D spring whose contours are similar to the input object. We devise an optimization problem that aims to minimize the number of required parts, thus reducing costs and fabrication time, while at the same time ensuring that the resulting spring mimics the shape of the original object. In addition to rapid fabrication and assembly, our method enables compact packaging and storage as flat parts. We also demonstrate its use for creating armatures for sculptures and moulds for filling, with potential applications in architecture or construction.

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“…In recent years, with growing interest in customized fabrication, various approaches have been proposed for computational design and fabrication. and Ceylan et al [2013] support gear-driven computational rigging for humanoid characters, Song et al [2013] support design of selfsupporting reciprocal structures, Deuss et al [2014] propose construction sequences along with intermediate support structures for constructing self-supporting structures, Garg et al [2014] create freeform surfaces supported by woven wires, Mellado et al [2014] explore construction sequences for easy installation of reciprocal structures, Pérez et al [2015] support design and fabrication of flexible meshes, while Koo et al [2016] propose design refinements to reduce wastage of materials due to offcuts in plank-based furniture.…”

Section: Related Workmentioning

confidence: 99%

String Actuated Curved Folded Surfaces

2017

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e e e e e e e e e e e e e e e e e Fig. 1: The top row shows a crease pattern together with the strings S = {a, b, c, d, e} computed by our algorithm and simulation of the induced, string driven folding motion. The bottom row shows a physical realization of the same crease pattern as a thin aluminum sheet. Each string is realized as a strand of colored thread. Strings are collected at a single anchor point and folding is driven by pulling the threads.Curved folded surfaces, given their ability to produce elegant freeform shapes by folding flat sheets etched with curved creases, hold a special place in computational Origami. Artists and designers have proposed a wide variety of different fold patterns to create a range of interesting surfaces. The creative process, design as well as fabrication, is usually only concerned with the static surface that emerges once folding has completed. Folding such patterns, however, is difficult as multiple creases have to be folded simultaneously to obtain a properly folded target shape. We introduce string actuated curved folded surfaces that can be shaped by pulling a network of strings thus vastly simplifying the process of creating such surfaces and making the folding motion an integral part of the design. Technically, we solve the problem of which surface points to string together and how to actuate them by locally expressing a desired folding path in the space of isometric shape deformations in terms of novel string actuation modes. We demonstrate the validity of our apMartin Kilian was supported by the Erwin Schrödinger fellowship J-3678-N25 awarded by the Austrian Science Fund (FWF), ERC StG-2013-335373, and the DFGCollaborative Research Center, TRR 109, 'Discretization in Geometry and Dynamics' through grant I-706-N26 of FWF. Aron Monszpart was supported by a Google PhD Fellowship, the ERC Starting Grant SmartGeometry (StG-2013-335373), and Adobe Research. Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than the author(s) must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from permissions@acm.org. proach by computing string actuation networks for a range of well known crease patterns and testing their effectiveness on physical prototypes. All the examples in this paper can be downloaded for personal use from

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Design and fabrication of flexible rod meshes

Cited by 97 publications

References 42 publications

Data‐Driven Bending Elasticity Design by Shell Thickness

Data‐Driven Bending Elasticity Design by Shell Thickness

Packable Springs

String Actuated Curved Folded Surfaces

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