Elastostatics of star-polygon tile-based architectured planar lattices

Soyarslan, Celal; Gleadall, Andrew; Yan, Jiongyi; Argeso, Hakan; Sozumert, Emrah

doi:10.1016/j.matdes.2022.111580

Cited by 2 publications

(1 citation statement)

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“…Following topology optimization studies and computational modeling results, [ 24–26 ] different negative Poisson ratio materials can be produced. Auxetic polymer lattices were recently 3D printed by one of the authors [ 27 ] to achieve a wide range of positive and negative values for Poisson's ratio using the same software for toolpath design as was used in this study. Those structures are appropriate for DIW of metallic inks and would be in interesting direction for future research.…”

Section: Resultsmentioning

confidence: 99%

Ink Tuning for Direct Ink Writing of Planar Metallic Lattices

2023

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316L and Cu‐based inks are developed to 3D‐printed tetrachiral auxetic structures. The main objectives of the work are to study the effects of powders composition and powder:binder volume ratio on rheological properties and printability of the inks. Following these results, customized Gcode is developed using FullControl Gcode Designer open‐source software to 3D print intricate tetrachiral auxetic structures. The results reported in this work show how powder composition (316L versus Cu) has less effect on the inks’ rheological behavior than powder size distribution and powders:binder volume ratio. In terms of rheological parameters, the zero‐shear rate viscosity mainly affects the capability of the printed ink to retain its shape after printing, while the yield stress affects the printability. The printed and sintered auxetic structures achieve the intended lattice‐geometry design.

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Section: Resultsmentioning

confidence: 99%