The properties of lattice structure are influenced by cell morphology, cell size, relative density and tessellations. In this study, the concept of tessellation has been evaluated for structural and functional properties of additively manufactured lattice structures using PA-12 material. The tessellation design of unit lattice cell is inspired by arrangement of atoms in crystal structures. The strategy of mimicking these different arrangements at atomic level to generate mesoscale cellular structures is termed as ‘Atomic Tessellation’.

In the current study, arrangement of metallic crystal structures: BCC, FCC and HCP were compared with conventional periodically tessellated SC structure using sea-urchin unit cell for mechanical, energy absorption and structural behaviour properties. The tessellated lattice structures were printed with hybrid AM technology using HP-MJF 4200. The significant effect of tessellations was observed during compression testing of printed samples in terms of their stress-strain behaviour. Lattice structures such as SC, BCC, FCC and HCP_90 shows ‘degradation-prone deformation behaviour’ which is similar to stretch dominated behaviour in structural elements (thin struts and thin walls). On the other hand, HCP tessellation (HCP_0) converts ‘degradation-prone deformation behaviour’ into ‘progressive deformation behaviour’ that is similar to bending dominated behaviour in structural elements. Moreover, significant effects of tessellations were also observed in load bearing and energy absorption properties. Although the study has attempted to introduce the design concept of atomic tessellations from structural point of view, further studies are required to strengthen tessellation based design principles for obtaining different structural and functional properties.

晶格结构的特性受晶胞形态、晶胞大小、相对密度和镶嵌的影响。在这项研究中，对使用 PA-12 材料的增材制造的晶格结构的结构和功能特性评估了镶嵌的概念。晶格单元的镶嵌设计灵感来自晶体结构中原子的排列。在原子水平上模仿这些不同排列以生成中尺度细胞结构的策略被称为“原子镶嵌”。

在目前的研究中，金属晶体结构的排列：BCC、FCC 和 HCP 与使用海胆晶胞的常规周期性镶嵌 SC 结构的机械、能量吸收和结构行为特性进行了比较。镶嵌的晶格结构是使用 HP-MJF 4200 使用混合 AM 技术打印的。在打印样品的压缩测试期间观察到镶嵌的显着影响，就其应力应变行为而言。SC、BCC、FCC 和 HCP_90 等晶格结构显示出“易降解变形行为”，这类似于结构元素（薄支柱和薄壁）中的拉伸主导行为。另一方面，HCP 镶嵌 (HCP_0) 将“易降解变形行为”转换为“渐进变形行为”，类似于结构元素中的弯曲主导行为。此外，在承载和能量吸收特性方面也观察到镶嵌的显着影响。尽管该研究试图从结构的角度介绍原子镶嵌的设计概念，但需要进一步研究以加强基于镶嵌的设计原则，以获得不同的结构和功能特性。