Liu Jiakun, Zhu Xiaoheng, Gosrich Walker, Yim Mark, Raney Jordan R
Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, PA 19104, USA.
Sci Adv. 2025 May 16;11(20):eadu8260. doi: 10.1126/sciadv.adu8260. Epub 2025 May 14.
Nature manufactures structures via decentralized processes involving groups of agents. This is fundamentally different from traditional manufacturing, where objects are produced via sequences of predefined steps. In this work, we explore the idea of using simulated "swarms" of simple agents to generate new designs for architected materials in a decentralized, bioinspired manner. Individual agents choose their own actions based solely on information in their immediate environment, with no centralized control. The structures that these processes produce are the result of the collective action of the individual agents, rather than a predetermined design. We build an integrated platform for determining "rule-structure-property" relationships, analogous to process-structure-property relationships in materials science. The platform simulates agent behaviors to show how different rules and different environments result in different structures. We then three-dimensional print these and perform finite element analysis to experimentally and numerically characterize mechanical properties, including tensile strength and energy dissipation.
自然界通过涉及多组主体的分散过程制造结构。这与传统制造有着根本的不同,传统制造是通过一系列预定义的步骤来生产物体。在这项工作中,我们探索了以分散的、受生物启发的方式,使用简单主体的模拟“群体”为结构化材料生成新设计的想法。单个主体仅根据其直接环境中的信息选择自己的行动,没有集中控制。这些过程产生的结构是单个主体集体行动的结果,而不是预先确定的设计。我们构建了一个用于确定“规则 - 结构 - 属性”关系的集成平台,类似于材料科学中的过程 - 结构 - 属性关系。该平台模拟主体行为,以展示不同的规则和不同的环境如何导致不同的结构。然后,我们对这些结构进行三维打印,并进行有限元分析,以通过实验和数值方法表征机械性能,包括拉伸强度和能量耗散。