Damage tolerant ultralightweight mechanical metamaterials (MMs) for the next-generation large scale all-electric aircrafts

用于下一代大型全电动飞机的耐损伤超轻机械超材料（MM）

• 批准号: 2883275
• 金额: --
• 依托单位: Queen Mary University of London
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2883275
• 关键词: Damage; tolerant; ultralightweight; mechanical; metamaterials

Aviation emissions accounted for 7% of UK Greenhouse Gas emissions in 2018, which suggests electrification could have a large impact on decarbonizing the aviation sector. The successful realization of large scale all-electric aircraft architectures is heavily dependent on breakthrough in high-performance structural materials to overcome the various limitations faced by the conventional materials. Mechanical metamaterials (MMs) are a group of man-made architected materials that can be tailored to achieve unprecedented mechanical properties and multifunctionality through geometric arrangements rather than material properties of the constituents. The proposed research aims to establish a feasible design route to create damage tolerant ultralightweight mechanical metamaterials (MMs) for the next-generation large scale all-electric aircrafts. Damage tolerance is a fundamental requirement for high performance structural materials. Structural materials are expected to (i) fail in a progressive manner that can give warning to failure events, and (ii) have good load bearing capacity with presence of flaws. Natural cellular materials, such as marine mussels, honeycombs, woods, trabecular bones, plant parenchyma and sponges, benefit from the disorderliness within their internal microstructures to achieve highly damage tolerant behaviours. Inspired by this, the objectives of this research are to (1) open up a novel design pathway for damage tolerant ultralightweight MMs by engineering controlled degrees of disorderliness into initially periodic, ordered metamaterial systems. The initiative will be supported by novel, mechanics informed data-driven approaches that can tune the distribution of disorderliness within the MMs, (2) design new classes of ultralightweight MMs with high damage tolerance, (3) establish the design principles of high performance, damage tolerant ultralightweight MMs, and (4) evaluate the effectiveness for multifunctional applications of MMs for all-electric aircraft architectures.

航空排放量占2018年英国温室气体排放的7％，这表明电气化可能会对航空部门的脱碳产生很大影响。大规模全电动飞机架构的成功实现在很大程度上取决于高性能结构材料的突破，以克服传统材料所面临的各种限制。机械超材料（MMS）是一组人造的架构材料，可以通过几何布置而不是成分的材料特性来量身定制以实现前所未有的机械性能和多功能性。拟议的研究旨在建立可行的设计途径，以创建下一代大规模全电动飞机的耐受性超重机械材料（MMS）。损伤耐受性是高性能结构材料的基本要求。预计结构材料将以渐进的方式失败，可以警告失败事件，并且（ii）在存在缺陷的情况下具有良好的负载能力。天然细胞材料，例如海洋贻贝，蜂窝，木材，小梁骨，植物实质和海绵，受益于其内部微观结构内的混乱，以实现高度损害的行为。受到这一点的启发，这项研究的目标是（1）通过工程控制的损害超轻量轻量级MMS开放新颖的设计途径，该途径通过工程控制的程度，使其成为最初定期的，有序的超材料系统。该计划将得到新颖的，机械知情的数据驱动方法的支持，这些方法可以调整MMS内的混乱分布，（2）设计具有高损伤公差的新型超级量级MMS，（3）建立高性能的设计原理，高性能的损害超级级超级级超级超级超级MMS，以及（4）对多功能构建的构造的有效性来构建MMS，并将其用于多功能mms。