Fluidic origami cellular structure with asymmetric quasi-zero stiffness for low-frequency vibration isolation

Abstract

This study investigates a unique asymmetric quasi-zero stiffness (QZS) property from the pressurized fluidic origami cellular structure, and examines the feasibility and efficiency of using this nonlinear property for low-frequency vibration isolation. This QZS property of fluidic origami stems from the nonlinear geometric relationships between folding and internal volume change, and it can be programmed by tailoring the constituent Miura-Ori crease design. Different fluidic origami cellular structure designs are introduced and examined to obtain a guideline for achieving QZS property. A proof-of-concept prototype is fabricated to experimentally validate the feasibility of acquiring QZS. Moreover, a comprehensive dynamic analysis is conducted based on numerical simulation and harmonic balance method approximation. The results suggest that the QZS property of fluidic origami can successfully isolate base excitation at low frequencies. In particular, this study carefully examines the effects of an inherent asymmetry in the force-displacement curve of pressurized fluidic origami. It is found that such asymmetry could significantly increase the transmissibility index with certain combinations of excitation amplitude and frequency, and it could also induce a drift response. Outcome of this research can lay the foundation for new origami-inspired multi-functional metamaterials and meta-structures with embedded dynamic functionalities. Moreover, the investigations into the asymmetry in force-displacement relationship provide valuable insights for many other QZS structures with similar properties.

Stacked-origami mechanical metamaterial with tailored multistage stiffness

“…In the future, the application of the proposed ZBSO metamaterial in other fields will be further explored, e.g. low-frequency vibration isolation load-bearing structures [43].…”

“…stacking order and sacking way [42]. For instance, the high-static-low-dynamic stiffness property can be harnessed by SOMM, which is extremely important in the field of low-frequency vibration isolation [43][44][45][46]. Our previous work revealed that stacking two Miura sheets to form a SOMM can achieve the realization of tailoring the dynamic stiffness [47].…”

A novel integrated quasi-zero stiffness vibration isolator for coupled translational and rotational vibrations

“…Other negative stiffness elements, such as bio-inspired structures [18] , [19] and electromagnetic structures [20] , [21] , [22] , were investigated for generating QZS feature. Recently, metamaterials and origami structures were also applied to achieve the QZS characteristics [23] , [24] , [25] , [26] , [27] .…”

Investigation of Compressive Behavior of Pre-folded Thin-walled Column Fabricated by 3D Printing

“…For example, a column with a pre-folded pattern could be used for suspension components of a building or bridge, which enables avoiding damage caused by vibrational energy excitation coming from earthquakes or wind (Ishida et al, 2017;Nikoo et al, 2020). In biomechanics application, the pre-folded thin-walled column could be used for biomedical stents (Kuribayashi et al, 2006) and suspension for prosthetic devices (Sadeghi & Li, 2019). Furthermore, the column is also suitable for suspension components in robotic structures, which usually have complex structures and irregular shapes (Castiblanco et al, 2021;Yu et al, 2020).…”