Direction-dependent bending resistance of 3D printed bio-inspired composites with asymmetric 3D articulated tiles.
| Autor: | Nash RJ; Department of Mechanical and Industrial Engineering, Northeastern University, Boston, MA 02215, United States of America., Li Y; Department of Mechanical and Industrial Engineering, Northeastern University, Boston, MA 02215, United States of America. |
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| Jazyk: | angličtina |
| Zdroj: | Bioinspiration & biomimetics [Bioinspir Biomim] 2024 Jul 15; Vol. 19 (5). Date of Electronic Publication: 2024 Jul 15. |
| DOI: | 10.1088/1748-3190/ad5ee7 |
| Abstrakt: | Inspired by the protective armors in nature, composites with asymmetric 3D articulated tiles attached to a soft layer are designed and fabricated via a multi-material 3D printer. The bending resistance of the new designs are characterized via three-point bending experiments. Bending rigidity, strength, and final deflection of the designs are quantified and compared when loaded in two different in-plane and two different out-of-plane directions. It is found that in general, the designs with articulated tiles show direction-dependent bending behaviors with significantly increased bending rigidity, strength, and deflection to final failure in certain loading directions, as is attributed to the asymmetric tile articulation (asymmetric about the mid-plane of tiles) and an interesting sliding-induced auxetic effect. Analytical, numerical, and experimental analyses are conducted to unveil the underlying mechanisms. (Creative Commons Attribution license.) |
| Databáze: | MEDLINE |
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