Vibration attenuation of rigid foldable origami-inspired metamaterials

Origami structures, through meticulously designed crease patterns, enable the folding and unfolding of configurations, demonstrating broad application prospects in the field of deployable spacecraft. However, achieving an integrated functional design that combines deployability, effective vibration attenuation, and high load-bearing capacity remains a key challenge. This study proposes a rigid-foldable origami-inspired metamaterial (RIME) for low-frequency broadband vibration attenuation. Kinematic analysis of the structural nodes confirms its potential for rigid deployment. The mechanical behavior of the structure during quasi-static compression is analyzed, and the quasi-zero-stiffness platform spans 75% of the total compression displacement. Furthermore, the band structure and transmission response of the structure are investigated, and the low-frequency broadband vibration suppression performance and the tunability of the bandgap are evaluated. The first bandgap ranges from 41.08 to 53.05. And by tuning the geometric parameters, the bandgap frequency can be reduced by up to 72.74%. Quasi-static compression experiments and vibration transmission experiments are conducted, and the results are in good agreement with the simulations. This work proposes a design strategy for low-frequency broadband vibration reduction metamaterials featuring rigid folding properties, quasi-zero stiffness behavior and bandgap, providing theoretical insights for deployable vibration attenuation designs in aerospace engineering.