Hierarchical, random and bifurcation tiling with heterogeneity in micro-structures construction via functional composition

Massarwi, Fady; Machchhar, Jinesh; Antolín, Pablo; Elber, Gershon

doi:10.1016/j.cad.2018.04.017

Cited by 25 publications

(20 citation statements)

References 21 publications

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“…[3,4,5,6,7]), triply periodic minimal surfaces (e.g. [8,9]), free-form microstructures [10], microstructures for expressive deformation (e.g. [11,12,13]), bone-like microstructures (e.g.…”

Section: Structures With Graded Propertiesmentioning

confidence: 99%

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CrossFill: Foam Structures with Graded Density for Continuous Material Extrusion

Kuipers

Wang

2019

Computer-Aided Design

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The fabrication flexibility of 3D printing has sparked a lot of interest in designing structures with spatially graded material properties. In this paper, we propose a new type of density graded structure that is particularly designed for 3D printing systems based on filament extrusion. In order to ensure high-quality fabrication results, extrusion-based 3D printing requires not only that the structures are self-supporting, but also that extrusion toolpaths are continuous and free of self-overlap. The structure proposed in this paper, called CrossFill, complies with these requirements. In particular, CrossFill is a self-supporting foam structure, for which each layer is fabricated by a single, continuous and overlap-free path of material extrusion. Our method for generating CrossFill is based on a space-filling surface that employs spatially varying subdivision levels. Dithering of the subdivision levels is performed to accurately reproduce a prescribed density distribution. We demonstrate the effectiveness of CrossFill on a number of experimental tests and applications.

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“…[3,4,5,6,7]), triply periodic minimal surfaces (e.g. [8,9]), free-form microstructures [10], microstructures for expressive deformation (e.g. [11,12,13]), bone-like microstructures (e.g.…”

Section: Structures With Graded Propertiesmentioning

confidence: 99%

“…We now define the subdivision rules on the prism cells, which depend on the type of prism (H-or Q-prism), the route type (A-, 10. Repeated application of the subdivision rules defined in Fig.…”

Section: Subdivision Rulesmentioning

confidence: 99%

CrossFill: Foam Structures with Graded Density for Continuous Material Extrusion

Kuipers

Wang

2019

Computer-Aided Design

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“…(d) shows a zoomed-in view on the top right portion of (c). Following the introduction of hierarchical micro-structures in [17].…”

Section: Previous Workmentioning

confidence: 99%

“…Recalling Algorithm 1 and following [11,17], the construction of micro-structures involves three main steps: 1. Specifying the macro shape parametrically.…”

Section: Micro-structures Synthesis As a Design Paradigmmentioning

confidence: 99%

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Optimizing Micro-Tiles in Micro-Structures as a Design Paradigm

Antolín

Buffa

Cohen

et al. 2019

Computer-Aided Design

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In recent years, new methods have been developed to synthesize complex porous and micro-structured geometry in a variety of ways. In this work, we take these approaches one step further and present these methods as an efficacious design paradigm. Specifically, complex micro-structure geometry can be synthesized while optimizing certain properties such as maximal heat exchange in heat exchangers, or minimal weight under stress specifications.By being able to adjust the geometry, the topology and/or the material properties of individual tiles in the microstructure, possibly in a gradual way, a porous object can be synthesized that is optimal with respect to the design specifications. As part of this work, we exemplify this paradigm on a variety of diverse applications.

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2022

IGA: Non‐conforming Coupling and Shape Optimization of Complex Multipatch Structures

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Hierarchical, random and bifurcation tiling with heterogeneity in micro-structures construction via functional composition

Cited by 25 publications

References 21 publications

CrossFill: Foam Structures with Graded Density for Continuous Material Extrusion

CrossFill: Foam Structures with Graded Density for Continuous Material Extrusion

Optimizing Micro-Tiles in Micro-Structures as a Design Paradigm

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