期刊
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
卷 286, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijsolstr.2023.112560
关键词
Mechanical metamaterials; Self -folding; Tunable bistability; Thermomechanical responses; Multi -stage load -bearing
类别
This paper presents a cage-shaped, self-folding mechanical metamaterial that exhibits multiple deformation modes and has tunable mechanical properties, providing multifunctional applications in various fields.
Self-folding is an effective design method for mechanical metamaterials with complex configurations and multiple material components. However, existing self-folding mechanical metamaterials are typically limited to a single transformation, limiting their potential for various deformation modes and diverse application scenarios. In this paper, we present a cage-shaped, self-folding mechanical metamaterial. This metamaterial exhibits multiple deformation modes from an initially flat state upon heating to different temperatures and subsequently remains stable upon cooling. The constituent self-folding elements of the metamaterial comprise temperatureresponsive materials to achieve different folding thresholds. Theoretical models are developed to quantify the mechanical properties of the metamaterial, enabling programmable design of its mechanical performance. We also demonstrate that the cage-shaped mechanical metamaterial has tunable mechanical properties, multi-stage load-bearing, and decoupling of mechanical performance, providing the possibility of multifunctional applications in various fields.
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