Optimal isotropic, reusable truss lattice material with near-zero Poisson’s ratio
| Autor: | Jean-Marc Cote, Qingxiang Ji, Johnny Moughames, Nicolas Laforge, Muamer Kadic, Sébastien Euphrasie, Julio Andrés Iglesias Martínez, Chen Xueyan, Vincent Laude, Samia Adrar, Huifeng Tan, Gwenn Ulliac |
|---|---|
| Přispěvatelé: | Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174) (FEMTO-ST), Université de Technologie de Belfort-Montbeliard (UTBM)-Ecole Nationale Supérieure de Mécanique et des Microtechniques (ENSMM)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS), Harbin Institute of Technology (HIT) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Optimal design
Materials science Bioengineering 02 engineering and technology 010402 general chemistry Poisson distribution 01 natural sciences Near-zero Poisson’s ratio [SPI.MAT]Engineering Sciences [physics]/Materials symbols.namesake Lattice constant Truss lattice materials Chemical Engineering (miscellaneous) Anisotropy Engineering (miscellaneous) Isotropic composite Mechanical Engineering Isotropy Mathematical analysis Metamaterial 021001 nanoscience & nanotechnology Poisson's ratio Finite element method 0104 chemical sciences Amorphous solid Mechanics of Materials symbols Reusable material 0210 nano-technology |
| Zdroj: | Extreme Mechanics Letters Extreme Mechanics Letters, Elsevier, 2020, 41, pp.101048. ⟨10.1016/j.eml.2020.101048⟩ |
| ISSN: | 2352-4316 |
| DOI: | 10.1016/j.eml.2020.101048⟩ |
| Popis: | International audience; Cork is a natural amorphous material with near-zero Poisson’s ratio that is ubiquitously used for sealing glass bottles. It is an anisotropic, transversally isotropic, composite that can hardly be scaled down. Here, we propose a new class of isotropic and reusable cork-like metamaterial that is designed from a hybrid truss-lattice material to show an isotropic Poisson’s ratio close to zero. Optimization is conducted using a multi-objective genetic algorithm, assisted by an elliptical basis function neural network, and coupled with finite element simulations. The optimal micro-structured metamaterial, fabricated by two-photon lithography with a lattice constant of 300 µm has an almost isotropic Poisson’s ratio smaller than 0.08 in all directions. It can recover 96.6% of its original shape after a compressional test exceeding 20% strain. |
| Databáze: | OpenAIRE |
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