Metadevices have emerged as a new element or system in recent years, from optics to mechanical science, showing superior performance and powerful application potential. In this study, a mechanical metadevice that capable of low-frequency vibration isolation, which is called metamaterial springs or metasprings, is proposed. Meanwhile, a modular design method is reported to obtain the customizable quasi-zero stiffness characteristic of the designed metaspring. As proof-of-concept, we demonstrate, both in simulations and experiments, the quasi-zero stiffness characteristics of the proposed metasprings using 3D-printed experimental specimens. Moreover, the low-frequency vibration isolation properties of the proposed metasprings is demonstrated both in vibration tests and automotive vibration tests. This work provides a new mechanical metadevice, that is, metasprings for low-frequency vibration isolation, as well as a modular design method for designing metasprings, which may revolutionize vibration isolation devices in the field of low-frequency vibration isolation.

中文翻译：

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用于低频振动隔离的超材料弹簧


近年来，从光学到机械科学，超元器件作为一种新的元件或系统出现，显示出卓越的性能和强大的应用潜力。在本研究中，提出了一种能够进行低频振动隔离的机械超器件，称为超材料弹簧或超弹簧。同时，报道了一种模块化设计方法，以获得所设计的 metaspring 的可定制准零刚度特性。作为概念验证，我们使用 3D 打印实验样品在模拟和实验中展示了所提出的 metaspring 的准零刚度特性。此外，所提出的弹簧的低频隔振性能在振动测试和汽车振动测试中都得到了证明。这项工作提供了一种新型的机械超装置，即用于低频隔振的 metasprings，以及用于设计 metaspring 的模块化设计方法，这可能会彻底改变低频隔振领域的隔振器件。