The demand for robust, lightweight polymer components in various industries has prompted researchers to turn to nature's structures for inspiration. Leveraging Polymer Additive Manufacturing (PAM), specifically Fused Filament Fabrication (FFF), complex bio-inspired lattice polymer structures have been successfully realized. This experimental study focuses on the development of novel 3D printed bioinspired Xylotus lattice structure with elements inspired by xylem and lotus. The primary goal was to evaluate the deformation behaviour and energy absorption characteristics of 3D printed Xylotus lattice structure under quasi-static compressive loading and compare the results with existing research. The hybrid (Xylotus) structure of xylem and lotus exhibited a sequential failure pattern, starting with axial cracks and followed by buckling. Furthermore, an analysis of energy absorption showed that the xylem lattice outperformed the lotus lattice, thanks to its robust tubular elements. Notably, the Xylotus lattice displayed the highest energy absorption capabilities, capitalizing on features from both lotus and xylem. The energy absorption of the Xylotus lattice structure surpassed that of the xylem and lotus structures by 13% and 29.2%, respectively. The xylotus lattice structure exhibited 38% higher energy absorption compared to the existing research. Moreover, the specific energy absorption of the Xylotus lattice structure outperformed the lattice structures reported in the existing research by 37%. This study offers valuable insights into the structural behaviour, energy absorption, and specific energy absorption of bio-inspired lattice Xylotus structure. The findings contribute significantly to the design of resilient, lightweight components, supporting the advancement of bio-inspired structures for diverse applications in various industries.

中文翻译：

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3D打印仿生Xylotus晶格结构在准静态轴向载荷条件下吸能的实验研究

各行业对坚固、轻质聚合物部件的需求促使研究人员转向自然结构寻求灵感。利用聚合物增材制造（PAM），特别是熔丝制造（FFF），复杂的仿生晶格聚合物结构已成功实现。这项实验研究的重点是开发新型 3D 打印仿生 Xylotus 晶格结构，其元素受到木质部和莲花的启发。主要目标是评估 3D 打印 Xylotus 晶格结构在准静态压缩载荷下的变形行为和能量吸收特性，并将结果与​​现有研究进行比较。木质部和莲花的混合（Xylotus）结构表现出顺序破坏模式，从轴向裂纹开始，然后是屈曲。此外，能量吸收分析表明，木质部晶格的性能优于莲花晶格，这要归功于其坚固的管状元件。值得注意的是，木莲花晶格利用了莲花和木质部的特征，表现出最高的能量吸收能力。Xylotus晶格结构的能量吸收分别超过木质部和莲花结构13%和29.2%。与现有研究相比，木莲花晶格结构的能量吸收提高了 38%。此外，Xylotus晶格结构的比能量吸收性能比现有研究报道的晶格结构高出37%。这项研究为仿生晶格 Xylotus 结构的结构行为、能量吸收和特定能量吸收提供了宝贵的见解。这些发现对弹性、轻质部件的设计做出了重大贡献，支持了仿生结构在各行业不同应用中的进步。