LSIMPACT: Life-like Resilient Materials for Mitigating Liquid-Solid Impact Damage

高速液体与固体之间的碰撞会产生破坏性的应力波。预测液固撞击(LSI)造成的损害是一个长期存在的多学科挑战，具有重要的影响，从风力涡轮机叶片的前沿侵蚀，到飞机上的鸟撞，再到坠机事件中的创伤性脑损伤。为了减少LSI对材料的损伤，需要对液体冲击损伤机理有一个基本的了解，并且需要从根本上耐冲击的新型材料。LSIMPACT旨在通过创新的实验和计算方法来揭示液-固冲击损伤机理，从而指导新型抗冲击材料的开发。材料的非均质性、应变率效应和湿热环境条件等复杂现象严重阻碍了对大规模集成电路损伤机理的理解。LSIMPACT将通过开发新的液体撞击测试设备和多物理计算模型来克服这一障碍。对大规模集成电路损伤机理的基本认识将指导分层结构抗冲击材料的发展。这种层次化的结构将进一步赋予自我修复功能，以创造能够对刺激(裂缝或损伤)做出反应的“栩栩如生”的材料。数据驱动的方法将被用来加速仿生材料的原型优化。为了实现这一目标，LSIMPACT将：1.通过新的冲击试验机探索非均质材料的液-固冲击损伤行为。2.提出新的多物理计算模型，准确预测非均质材料的液-固碰撞行为，揭示液-固碰撞损伤机理。3.将自愈材料与分层结构相结合，创造出栩栩如生的抗冲击材料。4.开发数据驱动的框架，以优化仿生弹性材料并制造用于现场测试的原型。

The collision between a high-velocity liquid mass and a solid can generate destructive stress waves. Predicting the damage caused by liquid-solid impact (LSI) is a longstanding multidisciplinary challenge with important implications, from leading-edge erosion of wind turbine blades, and bird strikes on aircraft to traumatic brain injuries in crash events. In order to reduce the LSI damage on materials, a fundamental understanding of the liquid impact damage mechanisms, and radically new impact-resistant materials are required. LSIMPACT aims to unravel the liquid-solid impact damage mechanisms via innovative experimental and computational methods, thereby guiding the development of new impact-resistant materials. The complex phenomenon involving material heterogeneity, strain rate effect and hygrothermal environmental conditions significantly hinders the understanding of LSI damage mechanisms. LSIMPACT will overcome this barrier by developing new liquid impact testing facilities and multiphysics computational models. The fundamental understanding of LSI damage mechanisms will guide the development of impact-resistant materials with hierarchical architectures. The hierarchical structures will be further empowered with self-healing functions to create "life-like" materials that can respond to stimuli (crack or damage). Data-driven methods will be used to accelerate the prototype optimisation of life-like materials. To achieve this, LSIMPACT will: 1. Explore the liquid-solid impact damage behaviours of heterogeneous materials via new impact testers. 2. Propose new multiphysics computational models to accurately predict the liquid-solid impact behaviours of heterogeneous materials and unveil the liquid-solid impact damage mechanisms. 3. Create life-like impact-resistant materials by integrating self-healing materials and hierarchical structures. 4. Develop a data-driven framework to optimise life-like resilient materials and manufacture prototypes for field tests.