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.

机械超材料近年来由于其不寻常但通常是理想的机械性能而引起的。通常，这种特性在天然材料中没有发现，而是其工程内部结构的结果。该研究计划的愿景是系统地利用良好的晶体学科学作为新型机械构造超材料的设计和开发的范式，这些范式优于现有的常规设计。特别是，该项目将集中于零或负刚度（ZNS）超材料，在变形过程中表现出零或负刚度的单个或多个阶段。这种超材料可能具有理想的结构特性，例如可逆变形，用于可回收的撞击弹性以及极端阻尼特性。 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.更具体地说，它将导致开发参数设计，晶体学修饰，结构行为评估以及新型ZnS机械超材料的框架，该Zns机械超材料也可能表现出其他非常规性的特性，例如负泊松比。在替代方案中，将对一组传统的设计进行实际测试，以相对评估其模拟性能。新设计和优化的超材料（例如3D打印或灭火切割）的利用技术也将进行物理制造和测试，目的是验证分析和数值模拟的目的，以及针对降低的可比较的常规超材料的降低集合以实验性地评估拟议设计的比较性能。这样的设计框架的开发将使科学家和工程师在其应用研究的基础上丰富多种可能的超材料设计范围。该项目可以促进在各个领域的潜在应用，包括运动工程，影响工程，振动控制和软机器人技术的各个领域中发现全新的超材料和元结构的新范围。