期刊
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
卷 212, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijmecsci.2021.106791
关键词
Rigid origami; Square-twist; Cellular metamaterials; Tunable Poisson's ratio
资金
- National Natural Science Foundation of China [52075016, 51635002, U20A20281]
This paper introduces a novel family of cellular mechanical metamaterials based on rigid foldable square-twist origami, with tunable Poisson's ratios achieved by adjusting design factors. The kinematics, rigid-foldability, and influences of various combination schemes on in-plane and out-plane Poisson's ratios of square-twist origami are studied. Following a mapping relationship between design factors and Poisson's ratio, cellular mechanical metamaterials with tunable Poisson's ratios can be designed for engineering applications.
Rigid origami provides great theoretical potentials for designing metamaterials with programmable mechanical properties. In this paper, a novel family of cellular mechanical metamaterials is developed based on rigid foldable square-twist origami. Kinematics and rigid-foldability of the four types of square-twist origami patterns are investigated. A square-twist origami, which has specific kinematic characteristics, is selected to construct novel metamaterial cells in the x-y plane. During deployment, the tunable Poisson's ratios of proposed metamaterial cells are guaranteed by their rigid-foldability and no self-intersection. Two combination schemes, literally linear and plane-symmetrical combination, are proposed to stack the metamaterial cells in the z -direction for building cellular metamaterials. Influences of geometries, number of layers, assemble mode, and combination scheme on the in-plane and out-plane Poisson's ratios of the square-twist origami are then evaluated. The Poisson's ratios of the constructed mechanical metamaterials are further analyzed. Following the mapping relationship between design factors and Poisson's ratio, cellular mechanical metamaterials with tunable Poisson's ratios could be designed for engineering applications.
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