Bending performance of an inflation-powered bistable folding beam

Zhao, Liang-Jie; Sun, Bo-Hua

doi:10.1016/j.engstruct.2023.117207

Cited by 3 publications

(1 citation statement)

References 61 publications

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“…When the trigger conditions are met, the effective area of baffles becomes smaller, and subsequently the liquid in the TLCD can flow freely. The effective area of baffles can be adjusted through a folding or sliding mechanism [28,29]. The baffles can be composed of multiple movable blades or panels that can be manipulated to vary the overall obstructive area.…”

Section: Basic Idea Of Event-triggered Semi-active Tlcdsmentioning

confidence: 99%

Event-triggered semi-active TLCD for ground motion-induced vibration control

Ding,

Zhang,

Song

et al. 2024

Smart Mater. Struct.

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One potential drawback of tuned liquid column dampers (TLCDs) is their relatively low control efficiency during the initial stage of structural vibration caused by external excitations. This is because satisfactory control effects can only be achieved when the liquid inside TLCD is fully oscillating, which is not the case during the initial stage. To solve this problem, in this study, an event-triggered semi-active technique is creatively proposed to improve the vibration reduction efficiency of TLCDs during the initial stage. The fundamental idea of the proposed approach is to provide an initial displacement to the liquid column via baffles, and then release the constraints on the initial liquid displacement at an appropriate time to achieve the rapid activation of TLCDs. A strategy from the standpoint of phase difference between liquid column motion and structural motion is proposed to determine the triggering conditions (i.e., when to release the constraints). The effectiveness of the proposed semi-active system is examined under both harmonic and stochastic excitations. The results show that the proposed strategy successfully improves the vibration suppression performance of TLCDs in the early stage of structural vibration.

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Section: Basic Idea Of Event-triggered Semi-active Tlcdsmentioning

confidence: 99%

Event-triggered semi-active TLCD for ground motion-induced vibration control

Ding,

Zhang,

Song

et al. 2024

Smart Mater. Struct.

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Design of thick-panel origami-inspired deployable protective shields for spacecraft

Zhang,

Gao,

Chen

et al. 2024

Thin-Walled Structures

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Mechanical Behavior of Origami-Based Inflatable Bistable Foldable Panels

Zhao,

Sun

2024

Journal of Applied Mechanics

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Deployable structures are extensively used in engineering. A bistable panel structure, inspired by multi-stable origami, is proposed, capable of deployment and folding powered by air pressure. Prototypes were manufactured using planar laser etching technology based on geometric design. Mechanical behavior under out-of-plane compression, in-plane compression, and out-of-plane bending loads was analyzed through experiments. The foldable panel showed superior mechanical performance under out-of-plane compression, highlighting its potential as an ideal energy-absorbing material. In-plane compression and out-of-plane bending along the folding direction exhibited lower strength due to foldability, with failure modes involving rigidity loss from folding. The structure demonstrated good energy absorption characteristics during in-plane compression. As the angle of the unit increased during out-of-plane bending, mechanical performance improved, but the failure mode shifted to fracture. In in-plane compression and out-of-plane bending perpendicular to the folding direction, mechanical performance was enhanced, but the structure failed due to strength loss from fracture.

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Bending performance of an inflation-powered bistable folding beam

Cited by 3 publications

References 61 publications

Event-triggered semi-active TLCD for ground motion-induced vibration control

Event-triggered semi-active TLCD for ground motion-induced vibration control

Design of thick-panel origami-inspired deployable protective shields for spacecraft

Mechanical Behavior of Origami-Based Inflatable Bistable Foldable Panels

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