CAREER: Mechanics of Kirigami-based Reconfigurable Structures

职业：基于剪纸的可重构结构的力学

• 批准号: 2005374
• 负责人: Jie Yin
• 金额: $ 48.36万
• 依托单位: North Carolina State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-09-01 至 2025-03-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2005374&HistoricalAwards=false
• 关键词: CAREER; Mechanics; Kirigami; based; Reconfigurable; CAREER; Mechanics; Kirigami; based; Reconfigurable

This Faculty Early Career Development Program (CAREER) award will support fundamental research on the mechanical behavior of kirigami-based reconfigurable two dimensional (2D) and three dimensional (3D) structures. Very recently, kirigami, the ancient paper cutting art, has inspired emerging scientific research and engineering innovations, ranging from mechanical metamaterials, stretchable devices, and solar tracking, to self-assembled 3D meso-structures. However, it largely lacks the fundamental understanding of cut-structures determined macroscopic mechanical response of kirigami structures. This research program will establish a theoretical framework for connecting the macroscopic mechanical behavior and cuts-based microstructures in a new class of kirigami-based structures, which are reconfigurable in both 2D and 3D. The knowledge developed through this project will advance multiple technologies, including scaffolds for conformable and stretchable electronics, electronic skin, adaptive energy efficient building envelope, programmable soft machines, soft robots, and reconfigurable acoustic wave guides. The education and outreach objectives will align with the research goal in generating better understanding of mechanics and structure-determined properties and functionalities in kirigami structures. Programs at Temple and museums in Philadelphia will be used to broaden the participation of K-12 in STEM, including Women's Engineering Exploration summer program and STEM education department at Temple, as well as Science museum displays (Franklin Institute) and Art show (Philadelphia Museum of Art) in Philadelphia. Kirigami-based 2D/3D structures will be constructed by applying designed cuts and/or folds to both planar sheets and bulk materials for actuation under forces or external stimuli. Systematic theoretical framework will be developed to predict the kinematics and constitutive modeling of 2D and 3D kirigami structures, with validation by numerical simulation, fabrication, and experimental testing. For 2D structures, a unified design of patterned cuts will account for both symmetric and non-symmetric deformation. The quantitative relationship between the overall mechanical properties and the geometry of localized cut structures will be determined through developed homogenization continuum model. 3D reconfigurable kirigami structures will be constructed from either (self-) folding of kirigami sheets or assembly of 3D cut polyhedron units as fundamental building blocks for architected structures. For 3D architected kirigami structures, their reconfigurability and mechanical properties will be determined by the deformation modes in localized 3D cut units. A theoretical framework will be developed to predict the overall deformation modes through mode analysis under both small and finite deformation.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

这项教师早期职业发展计划（职业）奖将支持有关基于基里加米的机械行为的基础研究，可重构二维（2D）和三维（3D）结构。最近，古老的剪裁艺术基里加米（Kirigami）启发了新兴的科学研究和工程创新，从机械超材料，可拉伸设备和太阳能跟踪到自组装3D Meso结构。然而，它在很大程度上缺乏对切割结构确定基里加米结构的宏观机械反应的基本理解。该研究计划将建立一个理论框架，用于连接宏观机械行为，并在新的基于Kirigami的结构中基于剪切的微观结构，这些结构在2D和3D中都是可重构的。通过该项目开发的知识将推进多种技术，包括用于符合和可拉伸电子产品的脚手架，电子皮肤，自适应能源有效的建筑包络，可编程的软计算机，软机器人和可重新配置的声波指南。教育和宣传目标将与研究目标一致，以更好地了解基里加米结构中的力学和结构确定的特性和功能。费城的坦普尔和博物馆的计划将用于扩大K-12在STEM中的参与，包括Temple的妇女工程勘探夏季计划和STEM教育部，以及科学博物馆展览会（富兰克林研究所）和艺术展（费城艺术博物馆）在费城举行。 基于基里加米的2D/3D结构将通过将设计的切割和/或折叠施加到平面板和散装材料下，以在力或外部刺激下进行致动。将开发系统的理论框架，以预测2D和3D Kirigami结构的运动学和组成型建模，并通过数值模拟，制造和实验测试进行验证。对于2D结构，统一的图案切割设计将构成对称变形和非对称变形。总体机械性能与局部切割结构的几何形状之间的定量关系将通过开发的均质连续模型确定。 3D可重新配置的基里加米结构将是通过基里加米板的（自）折叠或3D切割多面体单元组装的组装来构建的，它是架构结构的基本构建块。对于3D架构的Kirigami结构，其重构性和机械性能将由局部3D切割单元中的变形模式确定。将开发一个理论框架，以通过小小的和有限的变形下的模式分析来预测整体变形模式。该奖项反映了NSF的法定任务，并使用基金会的知识分子优点和更广泛的影响审查标准，认为值得通过评估来获得支持。