The overall mechanical properties of an origami can be programed by its pattern of crease, which introduces variousinteresting mechanical properties, such as tunable stiffness, multistability and coupled deformations. Once obtaining theknowledge about the properties of the side plates, the creases and the folding procedure, the mechanical response oforigami can be completely determined. Therefore, origami with highly designable and tunable abilities offers newpossibilities for the metamaterial design. In this research, we aim to combine origami with elastic metamaterials. Byintroducing the tunable twisting origami structure into the subwavelength-scale resonator design, a three-dimensionalelastic metamaterial with low-frequency dynamic performance has been proposed, which, at the same time, has theadvantages of lightweight and controllablility. The geometrical nonlinearity of the origami building block is first studied,which indicates that the large structural deformation can be harnessed to tune the effective stiffness of the origami.Further research discovers the quantitative relationship between the overall stiffness and each geometric parameterthrough the potential energy analysis. Then, the designed origami cell is used as an attachable resonator to control theflexural wave propagation in a metamaterial beam. Finally, both static and dynamic experiments are conducted on theorigami cell and the metamaterial beam to verify the tunable stiffness and the on-demand bandgaps, respectively.
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