Design of quasi-zero stiffness metamaterials with high reliability via metallic architected materials

In this paper, a novel design of quasi-zero stiffness (QZS) metamaterials with high-reliability properties is proposed to extend the practical engineering applications as far as possible. The design of the unit cells of the QZS metamaterial is inspired by the natural growth of tree trunks, which have the characteristics of a simple structure and are easy to be processed. The high-reliability properties of QZS metamaterials are realized by introducing metallic-architected materials. Experimental tests are performed to reveal the reliable mechanical response of QZS elements and the ideal low-frequency vibration isolation effect of QZS metamaterials when metallic architected materials are introduced. The proposed QZS metamaterials as well as the high-reliability design paradigm can facilitate the development of QZS metamaterials for low-frequency vibration isolation.