Crystallographically-Architected Mechanical Metamaterials (CrystArMM)

晶体结构机械超材料 (CrystArMM)

• 批准号: EP/X019470/1
• 负责人: Pooya Sareh
• 金额: $ 50.48万
• 依托单位: Newcastle University
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2024
• 资助国家: 英国
• 起止时间: 2024 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FX019470%2F1
• 关键词: Crystallographically; Architected; Mechanical; Metamaterials; CrystArMM

Mechanical metamaterials have been of widespread attraction in recent years as a result of their unusual, but often desirable, mechanical properties. Such properties are, in general, not found in natural materials, but are the results of their engineered internal structures. The vision for this research programme is to systematically utilize the well-established science of crystallography as a paradigm for the design and development of novel architected mechanical metamaterials which outperform existing conventional designs. In particular, this project will focus on zero or negative stiffness (ZNS) metamaterials which manifest single or multiple phases of zero or negative stiffness during their deformation process. Such metamaterials could have desirable structural properties such as reversible deformation to be used for recoverable impact resilience as well as extreme damping properties. The main aim of this project, entitled Crystallographically-Architected Mechanical Metamaterials (CrystArMM), is to develop a robust design methodology for the optimal design and performance evaluation of new ZNS metamaterials.The project will involve the systematic design and structural form-finding of novel mechanical metamaterials, followed by geometrical optimisation using efficient classic or metaheuristic methods. More specifically, it will lead to the development of a framework for the parametric design, crystallographic modification, structural behaviour evaluation, and optimisation of novel ZNS mechanical metamaterials which may also exhibit other unconventional properties such as negative Poisson's ratio. The novel designs will be virtually tested against a set of traditional ones in the space of alternatives to comparatively evaluate their simulated performance. Exploiting manufacturing technologies such as 3D printing or water-jet cutting, the newly-designed and optimised metamaterials will also be physically fabricated and tested for the purpose of validation of analytical and numerical simulations as well as against a reduced set of comparable conventional metamaterials to experimentally evaluate the comparative performance of proposed designs. The development of such a design framework will enable enriching the range of possible metamaterial designs on which scientists and engineers base their applied research. This project could facilitate the discovery of completely new ranges of metamaterials and metastructures with potential applications in various fields including sports engineering, impact engineering, vibration control, and soft robotics.

近年来，机械超材料因其不同寻常但往往令人满意的机械性能而引起了广泛的关注。一般说来，这种特性不是天然材料所具有的，而是其内部结构设计的结果。这一研究方案的愿景是系统地利用成熟的结晶学科学作为设计和开发新型机械超材料的范例，这种新型机械超材料的表现优于现有的常规设计。特别是，这个项目将集中在零或负刚度(ZNS)超材料，这些材料在变形过程中表现出单相或多相的零或负刚度。这种超材料可能具有理想的结构性能，例如可用于可恢复的冲击弹性的可逆变形以及极端的减震性能。该项目的主要目的是开发一种稳健的设计方法，用于新型ZNS超材料的优化设计和性能评估。该项目将涉及新型机械超材料的系统设计和结构形态寻找，然后使用高效的经典或超启发式方法进行几何优化。更具体地说，它将导致开发一种框架，用于新型ZNS机械超材料的参数设计、晶体修改、结构行为评估和优化，这些材料还可能表现出其他非常规性能，如负泊松比。这些新颖的设计将在替代方案领域与一系列传统设计进行虚拟测试，以对比评估它们的模拟性能。利用3D打印或水射流切割等制造技术，新设计和优化的超材料还将进行物理制造和测试，以验证分析和数值模拟，以及对照一组减少的可比传统超材料，以实验评估拟议设计的比较性能。这种设计框架的开发将能够丰富科学家和工程师进行应用研究所依据的可能的超材料设计的范围。该项目有助于发现全新的超材料和超结构，在运动工程、冲击工程、振动控制和软机器人等领域具有潜在的应用前景。