Abstract

This article proposes a 3 D printed bioinspired cellular structure known as Scutoids for use in lightweight sandwich designs under compression loads. The 3 D Scutoid cells are epithelial cell that are known for the property of stabilised tissue packing. Four self-packing Scutoid cells are designed for a cellular structure and investigated for deformation, crushing profile, stress concentration, and forces to assess its energy absorption capabilities at various crushing velocities using Aluminium alloy as material in ABAQUS/Explicit. Further, the effect of position of transition point that forms as a result of cell intercalation process along the apico-basal axis on the deformation is also studied by generating different Scutoid cell motifs. The performance of the Scutoid structure is compared to conventional honeycomb with similar mass and surface area. The suitability of the four-cell bioinspired Scutoid motif as a precursor to generate a sandwich structure is discussed by reproducing the cells.

摘要

本文提出了一种 3D 打印的仿生细胞结构，称为 Scutoids，用于在压缩载荷下的轻型三明治设计。3 D Scutoid 细胞是上皮细胞，以稳定组织堆积的特性而闻名。在 ABAQUS/Explicit 中，四个自包装 Scutoid 电池被设计用于蜂窝结构，并研究了变形、破碎轮廓、应力集中和力，以评估其在各种破碎速度下的能量吸收能力。此外，还通过生成不同的 Scutoid 细胞基序来研究由于沿 aico-basal 轴的细胞插入过程而形成的过渡点位置对变形的影响。Scutoid 结构的性能与具有相似质量和表面积的传统蜂窝结构进行了比较。通过复制细胞讨论了四细胞仿生 Scutoid 基序作为产生三明治结构的前体的适用性。