Origami-inspired quasi-zero stiffness metamaterials for low-frequency multi-direction vibration isolation.

The article focuses on the development of a quasi-zero stiffness (QZS) metamaterial designed for multi-directional low-frequency vibration isolation. Constructed from a series of Kresling-pattern origami-inspired structures, this metamaterial features a simple topology and employs a decoupling strategy that allows independent motion of adjacent unit cells, enhancing controllability and programmability. Both simulations and experiments demonstrate that the proposed QZS metamaterial effectively isolates vibrations in multiple directions at low frequencies, overcoming limitations of previous designs that were complex, large, or limited to one-dimensional vibration isolation. This work suggests potential applications of QZS metamaterials in various engineering fields requiring compact and efficient multi-directional vibration isolation solutions.