CAREER: Exploiting Time Dependent Behavior and Structure in Developing Programmable Materials

职业：利用时间相关行为和结构开发可编程材料

• 批准号: 2145803
• 负责人: James Gibert
• 金额: $ 60.18万
• 依托单位: Purdue University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-02-15 至 2027-01-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2145803&HistoricalAwards=false
• 关键词: CAREER; Exploiting; Time; Dependent; Behavior

This Faculty Early Career Development (CAREER) grant supports the development of a new generation of programmable materials that can control and monitor vibrations and shock events in real time. This technology has the potential to influence various applications ranging from improving the sensing and monitoring infrastructure to revolutionizing the emerging field of smart packaging. As an example, these materials allow for in-situ modification of the energy absorbing capabilities of systems whose conditions can change over time due to aging and/or due to changing temperatures, and, as such, they can reduce the cost of replacing vibration reduction equipment. This CAREER grant will introduce new mechanisms to program the stiffness and time-dependent mechanical and inertial behavior of these materials. The educational outreach will address systemic barriers placed upon marginalized students, who are often placed in less rigorous mathematics courses, by offering project-based experiential activities to engage students and foster an understanding of the applications of mathematics in a real-world context. These efforts also aim to demonstrates to the PI's research team the importance of STEM outreach with the goal of increasing diversity and inclusion in academia.The research goal of this CAREER project is to investigate the physics, and establish a mathematical foundation, that governs the interplay between topology and nonlinear and time-dependent material behavior in heterogeneous mechanical metamaterials. Applications range from vibration suppression and shock absorption to the development of metamaterials with self-sensing capabilities. This research will fill a fundamental knowledge gap in systematic techniques and theories that conceptualize mechanical metamaterials. The project work will focus on metamaterials with heterogeneity that arises from: 1) an inclusion in the topology of an elastomeric matrix, coined a ``digital element", and 2) the combination of materials whose behavior is primarily viscoelastic with a material whose behavior is primarily elastic and/or hyperelastic. The selective placement /and or removal of these digital elements allows for the systematic programming of a single host structure to exemplify a host of inertial and elastic behaviors leading to a range of dynamic responses when used as a component in a vibratory system. We hypothesize that the composite viscoelastic and hyperelastic materials will allow the host structure to have tailored novel strain dependent responses. The activities will develop the fundamental understanding and establish the mathematical framework needed to exploit these phenomena using the theory of dynamical systems along with analytical and numerical modeling, material characterization, and experimental testing. The resulting framework will then be used to improve the development of metamaterials with self-sensing capabilities.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.

该教师早期职业发展（CAREER）资助支持新一代可编程材料的开发，该材料可以实时控制和监测振动和冲击事件。这项技术有可能影响各种应用，从改善传感和监控基础设施到彻底改变新兴的智能包装领域。例如，这些材料允许对系统的能量吸收能力进行原位修改，这些系统的条件可能会因老化和/或温度变化而随时间变化，因此，它们可以降低更换减振装置的成本设备。这项职业资助将引入新的机制来对这些材料的刚度和随时间变化的机械和惯性行为进行编程。教育推广活动将通过提供基于项目的体验活动来吸引学生并促进他们对数学在现实世界中的应用的理解，从而解决边缘化学生面临的系统性障碍，这些学生通常被安排在不太严格的数学课程中。 这些努力还旨在向 PI 的研究团队展示 STEM 推广的重要性，以提高学术界的多样性和包容性。该职业项目的研究目标是研究物理学，并建立控制相互作用的数学基础异构机械超材料中的拓扑与非线性和时间相关材料行为之间的关系。应用范围从振动抑制和减震到具有自感知功能的超材料的开发。这项研究将填补机械超材料概念化的系统技术和理论的基本知识空白。该项目工作将重点关注具有异质性的超材料，这种异质性源于：1）弹性体基质拓扑中的包含物，创造了“数字元素”，以及2）行为主要是粘弹性的材料与行为主要是粘弹性的材料的组合主要是弹性和/或超弹性的。这些数字元件的选择性放置/和/或移除允许对单个主体结构进行系统编程，以举例说明在使用时导致一系列动态响应的一系列惯性和弹性行为。作为振动系统的一个组成部分，我们假设复合粘弹性和超弹性材料将允许主体结构具有定制的新颖的应变相关响应，这些活动将发展基本的理解并建立使用该理论来利用这些现象所需的数学框架。动力系统以及分析和数值建模、材料表征和实验测试。由此产生的框架将用于改进具有自感知能力的超材料的开发。该奖项反映了 NSF 的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Measuring gas discharge in contact electrification

测量接触带电中的气体放电

• DOI: 10.1038/s41467-023-43721-1
• 发表时间: 2023-12
• 期刊: Nature Communications
• 影响因子: 16.6
• 作者: Tao, Hongcheng;Gibert, James
• 通讯作者: Gibert, James

Nonlinear Dynamics of a Two Members Angle-Shaped Energy Harvester

二元角形能量收集器的非线性动力学

• DOI: 10.1115/smasis2022-90623
• 发表时间: 2022-09
• 期刊: Adaptive Structures and Intelligent Systems
• 作者: Danzi, Francesco;Tao, Hongcheng;Joodaky, Amin;Gibert, James M.
• 通讯作者: Gibert, James M.

The Presence of Chaos in a Viscoelastic Harmonically Forced Von Mises Truss

粘弹性简谐振动冯米塞斯桁架中存在的混沌

• DOI: 10.1115/detc2023-116683
• 发表时间: 2023-08
• 期刊: and Control (MSNDC
• 作者: Ghoshal, Pritam;Gibert, James;Bajaj, Anil K.
• 通讯作者: Bajaj, Anil K.

Characterization of Nonlinear Kirigami Springs Through Transient Response

通过瞬态响应表征非线性剪纸弹簧

• DOI: 10.1115/detc2022-93913
• 发表时间: 2022-08
• 期刊: ASME 2022 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
• 作者: Danzi, Francesco;Jenkins, Joshua;Tao, Hongcheng;Gibert, James M.
• 通讯作者: Gibert, James M.

Heterogeneous digital stiffness programming

异构数字刚度编程

• DOI: 10.1016/j.eml.2022.101832
• 发表时间: 2022-08
• 期刊: Extreme Mechanics Letters
• 影响因子: 4.7
• 作者: Tao, Hongcheng;Danzi, Francesco;Silva, Christian E.;Gibert, James M.
• 通讯作者: Gibert, James M.