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 ...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.展开更多
基金supported by the Basic Science Center Project of NSFC under grant No.51788104the China Postdoctoral Science Foundation under Grant No.2022M721850+1 种基金the NSFC under grant No.11974203the Scientific Research Foundation for Talented Scholars of CSUFT University(2024YJ002).
文摘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.
