A novel negative stiffness metamaterials: discrete assembly and enhanced design capabilities
Min Sun, Kun Zhang, Xinzheng Guo, Zheng Zhang, Yiji Chen, Guang Zhang, Shaofei Jiang
Abstract
Abstract In this study, a new negative stiffness metamaterial is designed using laminates with independent negative stiffness properties as the functional component and a discrete assembly method. In this paper, the metamaterial is designed by a mathematical model, which has been verified and analyzed systematically by experiment and finite element method. The influence of each laminate parameter on the design of metamaterials under uniform distribution and gradient distribution was investigated, and based on this, the load-bearing capacity enhancement strategy of metamaterials was further explored. The metamaterial has the advantages of discrete assembly and designability, which solves the defects of the previous performance constrained by the structure and enhances usability.