With the ever-increasing resolution of metal additive manufacturing processes, the ability to design and fabricate cellular or lattice structures is readily improving. While there are few limits to the variety of unit cell topologies that can feasibly be manufactured, there is little known about the effect that the underlying unit cell topology has on lattice structure mechanical performance. Increased knowledge of lattice structure performance based on the unit cell topology can aid in appropriate unit cell selection to achieve desired lattice structure mechanical properties. The objective in this work is to compile metal additively manufactured lattice structure characterization data found in the literature into Ashby-style plots that can be used to differentiate unit cell topologies and guide unit cell selection. Data gathered from literature encompasses over 69 papers describing 18 different unit cell topologies. Data on mechanical properties such as the effective modulus, Poisson’s ratio, yield strength, buckling strength, and plateau strength, of lattice structures from analytical models based on mathematical derivations, finite element analysis, and experimental characterization was gathered and synthesized. In total, nearly 1650 data points for experimental and finite element analysis were compiled along with a variety of analytical models for 18 different unit cell topologies. The process of gathering the data from the literature along with the assumptions used to compile the data are discussed. A graphical user interface and database were developed that allows for comparison of different lattice structure mechanical properties based on their unit cell topology. The Lattice Unit-cell Characterization Interface for Engineers (LUCIE) provides a simple format to guide engineers, scientists, and others towards understanding the relationships of the unit cell topology and the lattice structure mechanical properties, with the intent of guiding appropriate unit cell selection. Three cases studies are shown for using LUCIE to differentiate unit cell topologies for improved understanding of experimental and simulation-based results (Case Study 1), to identify unit cell topology options for reducing weight while maintaining yield stress or increasing yield stress without reducing weight (Case Study 2), and for quickly narrowing multiple options to an appropriate unit cell topology (Case Study 3).

随着金属增材制造工艺分辨率的不断提高，设计和制造多孔或晶格结构的能力也很容易得到提高。尽管可以制造的晶胞拓扑结构几乎没有限制，但对于底层晶胞拓扑结构对晶格结构机械性能的影响知之甚少。基于晶胞拓扑结构的晶格结构性能知识的增加可有助于适当的晶胞选择，以实现所需的晶格结构机械性能。这项工作的目的是将文献中发现的金属增材制造的晶格结构特征数据汇编成Ashby样式的图，可用于区分晶胞拓扑并指导晶胞选择。从文献中收集的数据包括描述18种不同单位晶胞拓扑结构的69篇论文。收集并综合了基于数学推导，有限元分析和实验表征的分析模型的晶格结构力学性能数据，例如有效模量，泊松比，屈服强度，屈曲强度和平稳强度。总共编辑了将近1650个用于实验和有限元分析的数据点，以及针对18种不同晶胞拓扑结构的各种分析模型。讨论了从文献中收集数据的过程以及用于编译数据的假设。开发了图形用户界面和数据库，可以根据其晶胞拓扑结构比较不同的晶格结构机械性能。面向工程师的晶格单元格表征接口（LUCIE）提供了一种简单的格式，可以指导工程师，科学家和其他人员理解晶胞拓扑结构与晶格结构力学性能之间的关系，以指导适当的晶胞选择。显示了三个案例研究，它们使用LUCIE来区分晶胞拓扑结构，以更好地理解基于实验和基于仿真的结果（案例研究1），确定用于减轻重量同时保持屈服应力或在不减轻重量的情况下增加屈服应力的晶胞拓扑结构选项（案例研究2），