Co-authors​ :

 Hyunsoo HONG (KOREA, REPUBLIC OF), Samuel KIM , Chin Siang NG (SINGAPORE), Taehyub LEE (SINGAPORE), Pei-Chen SU , Seong Su KIM (FRANCE) 

Metamaterials (or metastructures) are engineered structures with artificially designed patterns, ranging in size from microscopic to macroscopic. These structures exhibit unique properties not found in natural materials, such as negative refraction, invisibility, superhydrophobicity, and so on. Metamaterials, with their versatile and customizable characteristics, have garnered considerable interest across various industries such as aerospace and semiconductor technology. These materials derive their distinct and adjustable properties from the configuration, dimensions, and constituents of their individual unit cells. In this study, kirigami-inspired composite metamaterials with quasi-zero stiffness characteristics are developed for low-frequency vibration isolation. Inspired by kirigami, 3D-to-2D deployable structure is designed. Its deformation characteristics were investigated using finite element analysis (FEA). Following the design plan, the kirigami-inspired metamaterial was fabricated using fused deposition modeling (FDM) 3D printing with composite (carbon fiber reinforced TPU) filament. Moreover, the fabricated kirigami-inspired metamaterial underwent analysis utilizing a universal testing machine (UTM) to ascertain its mechanical characteristics, and a vibration shaker was employed to explore its vibration responses. These evaluations validated both the successful fabrication of the metamaterial and its intended behaviors.