Anisotropic porous structure modeling for 3D printed objects

Jin, Ying; Lü, Lin; Tian, Lihao; Yan, Xin; Chen, Baoquan

doi:10.1016/j.cag.2017.07.008

Cited by 32 publications

(16 citation statements)

References 33 publications

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“…We varied pore size and pore wall thickness but one could also vary other parameters such as the shape of the pores and the overall porosity. [32] With the structural variety that is offered by 3D printing, this approach could be extended to generate stiffness gradients in materials to improve the internal stress distribution when loads are applied. Furthermore, one could introduce unique stiffness profiles in additional directions of the adhesives, for example to realize high shear forces in the x-direction, but facilitate easy detachment in the y-direction, by lateral sliding.…”

Section: Discussionmentioning

confidence: 99%

“…3D printing has been used to fabricate porous structures with anisotropic properties. [ 31–34 ] Such anisotropic materials are applied as, for example, porous template scaffolds for tissue engineering. [ 35,36 ] In such scaffolds, porosity has a function to maximize permeability (which is crucial for cell growth and transport of nutrients and metabolic waste), but also to match the scaffold mechanical properties with those at the implantation site.…”

Section: Introductionmentioning

confidence: 99%

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Anisotropic Stiffness Adhesives for High Shear Forces on Soft Substrates

Assenbergh

Haring

Dijksman

et al. 2020

Adv Materials Inter

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requires two phenomena to take place: contact formation between the adhesive and the substrate and preservation of the formed contact when external loads are applied. [5,6] Consequently, for strong, yet reversible attachment, an adhesive should fulfil two contradictory properties simultaneously: high deformability in the normal direction, leading to a large contact formation, and low deformability in the loading direction, leading to preservation of the formed contact when loads are applied. [7] The presence of such direction-dependent stiffness in a material is commonly referred to as "anisotropic stiffness". [8,9] Dry adhesives are typically patterned with repetitive microscale elements such as pillars, spatulas, or mushrooms. [10-14] Alternatively, patterning adhesives with wrinkles has been proposed for controlling attachment. [15-17] When attaching to hard substrates, such surface (micro)patterns are associated with high adaptability

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Anisotropic Stiffness Adhesives for High Shear Forces on Soft Substrates

Assenbergh

Haring

Dijksman

et al. 2020

Adv Materials Inter

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“…They only considered the von Mises value without the stress tensor's directions and produced an isotropic closed porous structure. To involve anisotropy in Voronoi-based porous structures, [Ying et al 2018] proposed the anisotropic closedcell porous modeling method, but only in 2.5D. [Martínez et al 2016] proposed to generate aperiodic, stochastic open-cell Voronoi foams with prescribed isotropic elasticity, through a procedure akin to solid procedural textures.…”

Section: Related Workmentioning

confidence: 99%

Organic Open-cell Porous Structure Modeling

Tian

Lü

Chen

et al. 2020

Symposium on Computational Fabrication

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“…There are several studies dedicated to porous structures. One of the studies [13] presented bone-like porous structures, and another [14] was proposed anisotropic porous structures based on anisotropic centroidal Voronoi tessellations. In the study [15], researchers developed a density-aware internal porous supporting structure to improve the structural soundness of 3D fabrications.…”

Section: Fabricationmentioning

confidence: 99%

Multilevel Design for the Interior of 3D Fabrications

Chynybekova

Choi

2019

Symmetry

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This article presents a multilevel design for infill patterns. The method partitions an input model into subareas and each subarea are applied with different scales of infill patterns. The number of subareas can be decided by users. For each subarea, there are different values of the scaling parameter that determines the number of columns and rows of pattern elements, which is useful to change the weight and strength of a certain area by user demands. Subareas can be symmetric or asymmetric to each other depending on the geometry of a 3D model and the application requirements. In each subarea, there are generated symmetric patterns. The proposed method is also applicable to combining different patterns. The aim of our work is to create lightweight 3D fabrications with lighter interior structures to minimize printing materials and supplementary to strengthen thin parts of objects. Our approach allows for the composition of sparse and dense distributions of patterns of interior 3D fabrications in an efficient way so users can fabricate their own 3D designs.

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Anisotropic porous structure modeling for 3D printed objects

Cited by 32 publications

References 33 publications

Anisotropic Stiffness Adhesives for High Shear Forces on Soft Substrates

Anisotropic Stiffness Adhesives for High Shear Forces on Soft Substrates

Organic Open-cell Porous Structure Modeling

Multilevel Design for the Interior of 3D Fabrications

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