一种模拟多环链式构筑材料中静电驱动作用的计算方法
A Computational Method to Simulate Electrostatic Actuation in Polycatenated Architected Materials
- Universidade Estadual de Campinas (UNICAMP)（坎皮纳斯州立大学）
机构由 AI 辅助整理，请以论文原文为准。
AI总结：
本文提出一种计算框架，用于模拟多环链式构筑材料中的静电驱动，成功复现实验并揭示充电可实现可逆流-固转变及最高七倍的刚度增强。
AI中文摘要：
近年来出现了一类新型的多环链式构筑材料（PAMs），其表现出独特的力学性能，如应力-应变滞回以及由几何驱动的类固态与类流体行为之间的转变。尽管已有针对传统PAMs的有限元模型，但目前尚无模型能够考虑静电效应。在此，我们提出并定性验证了一个计算框架，用于模拟带静电的PAMs的结构、动力学和力学响应。我们的方法成功再现了与实验高度一致的静电驱动行为，并揭示静电电荷能够实现可逆的流体-固态转变，同时还提供了一种估算静电刚度的手段。值得注意的是，充电后刚度增强可达七倍。这项工作拓展了PAMs的设计空间，并为主动可控的力学超材料提供了一种预测工具。
英文摘要：
A novel class of polycatenated architected materials (PAMs) has recently emerged, exhibiting distinctive mechanical properties such as stress-strain hysteresis and a geometry-driven transition between solid-like and fluid-like behavior. Although finite element models exist for conventional PAMs, none currently account for electrostatic effects. Here, we propose and qualitatively validate a computational framework to simulate the structure, dynamics, and mechanical response of electrostatically charged PAMs. Our approach successfully reproduces electrostatic actuation in close agreement with experiments, and reveals that electrostatic charges enable a reversible fluid-to-solid transition while also providing a means to estimate electrostatic stiffness. Notably, stiffness enhancements of up to sevenfold are achieved upon charging. This work expands the design space of PAMs and offers a predictive tool for actively controllable mechanical metamaterials.
