Fluid Based Inerter Designs to Enhance Vibration Suppression Systems

通过有效和可靠的方法减轻机械结构中的不必要振动是设计过程中的一个重要和困难的部分。例如，乘用车的乘坐舒适性和操控性之间的良好平衡，在风和地震干扰下保持良好动力性能的同时需要建造更高和更修长的建筑物，以及在保持直线运行稳定性和减少轨道弯曲时的磨损之间的权衡，都吸引了学术界和工业界的大量研究。在当前对更灵活、更轻量化和更高效结构的驱动下，增强振动抑制系统的能力变得更加重要。干涉器概念的引入从理论上从根本上提高了被动减振系统的性能。已经确定了广泛的机械结构的显著理论性能优势。然而，当在实际应用中工作时，我们面临着物理互连实现的动态特性知识不足的障碍。该项目将建立精确的基于流体的惯性模型，并通过与工业项目伙伴密切合作开发的案例研究，展示这种设计在乘用车、高层建筑和铁路车辆上的潜在优势。所提出的工作将使基于流体干涉器的振动抑制设计技术得到广泛采用，并构成在包括公路和铁路运输、土木工程以及航空航天工程在内的多个工业部门广泛应用的重要一步。由此产生的英国先进设计能力的提高将极大地帮助高端制造业保持其竞争优势。

Mitigating unwanted vibration in mechanical structures via effective and reliable approaches is an important and difficult part of the design process. For example, a good balance between ride comfort and handling for passenger vehicles, the need to build taller and more slender buildings while maintaining good dynamic performances under wind and earthquake disturbances, and the trade off between maintaining straight running stability and reducing track wear when curving for railway vehicles, have all attracted much research from both academia and industry. In the current drive for more flexible, lightweight and more efficient structures, enhancing the capability of vibration suppression systems has become even more important.The introduction of the inerter concept has from theoretical point of view fundamentally enhanced the capability of passive vibration suppression systems. Significant theoretical performance advantages for a wide range of mechanical structures have been identified. However, when working on real applications, we face the obstacle of inadequate knowledge of the dynamic properties of physical inerter realisations. This project will establish accurate fluid based inerter models and demonstrate the potential superiority of such designs for passenger cars, tall buildings and railway vehicles through case studies developed in close collaboration with industrial project partners.The proposed work will enable the widespread uptake of fluid inerter based vibration suppression design techniques and constitute a major step towards wide spread application in multiple industrial sectors including road and rail transportation, civil engineering as well as aerospace engineering. The resulting improvements in the UK's capability for advanced design will greatly assist the high-end manufacturing industry to maintain its competitive edge.