Nonlocal Elastic Metamaterials: Leveraging Intentional Nonlocality to Design Programmable Structures

非局域弹性超材料：利用有意的非局域性来设计可编程结构

• 批准号: 2330957
• 负责人: Fabio Semperlotti
• 金额: $ 43.75万
• 依托单位: Purdue University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2024
• 资助国家: 美国
• 起止时间: 2024-05-01 至 2027-04-30
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2330957&HistoricalAwards=false
• 关键词: Nonlocal; Elastic; Metamaterials; Leveraging; Intentional

This award supports research that aims to develop a radically new class of elastic metamaterials that leverages intentional nonlocality as a design principle to achieve new material functionalities unachievable in via traditional materials. To date, metamaterial systems have been able to deliver unique properties that can largely surpass traditional materials, but these properties are limited to very narrow ranges of operating frequencies and functionalities, which in turns limit their practical application. The nonlocal approach will help overcome substantial obstacles on the way to transition elastic metamaterial technology towards real world applications. From a broader perspective, the theoretical and computational design tools developed in this project can have far-reaching impacts in other fields and applications such as the design of civil infrastructures resilient against extreme events, acoustic insulation for noise control in buildings and transportation systems, and advanced photonic and electromagnetic materials for electronic devices, telecommunications, and defense systems. The concept hinges on an intentionally nonlocal and hierarchical design that, by exploiting nonlocal interactions across spatial scales, will enable materials with exceptionally broadband dynamic performance, tunable effective properties, and programmable dynamics. The integration of nonlocality within a hierarchical design framework leads to the concept of multiscale nonlocality that will serve as a foundational theoretical principle to engineer complex material behavior across scales and to achieve a level of control on effective material properties not achievable by operating at a single scale. This project will also introduce the distinctive concept of delocalized action as a means to achieve efficient material tuning and reconfiguration. While delocalization is a natural consequence of nonlocality, its use to control material properties is largely unexplored and opens an extremely flexible and customizable design space where the material is designed in a distributed sense, hence paving the way towards materials exhibiting extreme structural efficiency.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.

该奖项支持旨在开发一类新的新型弹性超材料的研究，该弹性超材料利用故意非局部性作为设计原理，以实现通过传统材料无法实现的新材料功能。迄今为止，超材料系统已经能够提供可以在很大程度上超过传统材料的独特属性，但是这些属性仅限于非常狭窄的操作频率和功能范围，从而又限制了其实际应用。非局部方法将有助于克服在过渡弹性超材料技术向现实世界应用的途中的实质性障碍。 从更广泛的角度来看，该项目中开发的理论和计算设计工具可能会对其他领域和应用产生深远的影响，例如针对极端事件的民用基础设施的设计，建筑物和运输系统中的噪声控制的声学绝缘，以及对电子设备，电视，电视，电视，电视，电视，和辩护系统的高级光子和电磁材料。该概念取决于有意的非本地和分层设计，通过利用空间尺度的非本地相互作用，它将启用具有异常宽带动态性能，可调有效属性和可编程动力学的材料。非局部性在层次设计框架内的集成导致了多尺度非局部性的概念，该概念将作为跨尺度上工程复杂材料行为的基础理论原理，并实现对有效材料属性的控制水平，无法通过单个尺度运行。该项目还将介绍独特的独立行动概念，以此作为实现有效的材料调整和重新配置的一种手段。虽然离域化是非局部性的自然后果，但它用于控制材料特性的用法在很大程度上没有探索，并为以分布式意义设计材料设计了极为灵活和可定制的设计空间，因此，铺平了迈向表现出极端结构效率的材料的方式。这一奖项反映了NSF的法定任务，反映了经过评估的经验，这是通过评估构成的依据。