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Out-of-plane compressive mechanical properties of square-twist origami folded-stable state

2023; Elsevier BV; Volume: 246; Linguagem: Inglês

10.1016/j.ijmecsci.2023.108104

1879-2162

Li‐Chen Wang, Wei‐Li Song, Xiaogang Guo,

Advanced Sensor and Energy Harvesting Materials

Origami structures are widely favored by engineering applications due to their reconfigurable characteristics and controllable mechanical properties. The square-twist (S-T) origami, featured with typical folded stability, has a broad application prospect. However, researchers usually focus on how the S-T folded-stable configuration is formed and affected by critical designing factors, lacking attention to its out-of-plane mechanical properties. Here, the mechanical properties of out-of-plane compression for the S-T origami in folded-stable state with zero neutral angle are revealed. A finite element compression model of the prestressed S-T origami folded-stable state is established and verified by compression experiments on the typical S-T origami. With the finite element model, the three-stage out-of-plane compressive mechanical behavior of typical S-T origami folded-stable state caused by facet contact and facet-substrate contact is discovered. By investigating the effects of different geometric and material parameters on the out-of-plane compressive mechanical properties for S-T origami folded-stable state, it is found that the self-contact situation of the S-T origami folded state significantly affects its out-of-plane compressive mechanical behavior. The influence of various filling materials in the S-T origami folded-stable state on its out-of-plane compressive mechanical behavior is discussed, highlighting the feasibility of our design in the flexible protection and related applications.