Large deformation of an arc-Miura structure under quasi-static load

Xiang, Xinmei; Lu, Guoxing; Ruan, Dong; Zhang, You; Zolghadr, Mohammad

doi:10.1016/j.compstruct.2017.09.023

Cited by 44 publications

(6 citation statements)

References 29 publications

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“…Alternatively, 3D auxetic properties are replicated in the origami structure by combining the Zigzagbase folds with origami and kirigami concepts (Xiang et al, 2018(Xiang et al, , 2020a. Adopting wellconfigured treatment, structures such as origami can in some cases be further seen as rotatable amorphous structures and not necessarily as single auxetic structures (Xiang et al, 2017). Conclusively, using materials with fixed ductility, the auxetic configuration should be modified so that the minimum value of the Poisson's ratio-strain curve can be negative.…”

Section: Tailored Auxetic Structuresmentioning

confidence: 99%

Recent advances in auxetics: Applications in cementitious composites

Gan

Zhuge

Thambiratnam

et al. 2022

International Journal of Protective Structures

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Auxetic materials, possessing negative Poisson’s ratios (NPRs), have the ability to shrink (or expand) in the lateral direction under an axial compressive (or tensile) force respectively. Due to this unique feature, an auxetic material is found to sustain high energy absorption capacity, fracture toughness and shear resistance and thus regarded as one of the future materials in the field of impact protection. However, civil engineering applications of auxetic structures or materials are minimal due to miscellaneous restrictions on NPR effects. Accumulative developments in auxetics have facilitated their applications in cementitious materials in recent years. This paper presents an overview of recent advances in the development of auxetic cementitious composites and analyses and summarises their mechanical properties under different loading conditions. Prior to extensive finite element simulations, more attention has been given to the limited experimental results. Particular attention is paid to the expansionary feasibility of the parent material to introduce auxetic behaviour, with precise identification of the limitations, innovative composition methods and facilitation of auxetic features. Finally, the paper outlines the limitations of the current research and envisages few future research opportunities in auxetic cementitious composites.

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Section: Tailored Auxetic Structuresmentioning

confidence: 99%

Recent advances in auxetics: Applications in cementitious composites

Gan

Zhuge

Thambiratnam

et al. 2022

International Journal of Protective Structures

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“…These vertices determine the consequent mountain and valley fold patterns that arise from these zig-zag crease patterns and are the foundation of the Arc-Miura cylinder design. The Arc-Miura pattern of an origami-folded cylinder does not have any curvature limitations [24], thus enabling the bending of the soft robot. The folded structure was an octagonal cylinder with a diameter of 15 mm and a fully contracted and expanded length of 20 mm and 50 mm respectively but the working range of the robot varies between ≈30 mm and ≈40 mm.…”

Section: Fabrication Of Soft Robotmentioning

confidence: 99%

Untethered Origami Worm Robot with Diverse Multi-Leg Attachments and Responsive Motions under Magnetic Actuation

et al. 2021

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Nowadays, origami folding in combination with actuation mechanisms can offer deployable structure design, yield compliance, and have several properties of soft material. An easy complex folding pattern can yield an array of functionalities in actuated hinges or active spring elements. This paper presents various cylinder origami robot designs that can be untethered magnetically actuated. The different designs are analyzed and compared to achieve the following three types of motion: Peristaltic, rolling, and turning in different environments, namely, board, sandpaper, and sand. The proposed origami robot is able translate 53 mm in peristaltic motion within 20 s and is able to roll one complete cycle in 1 s and can turn ≈180∘ in 1.5 s. The robot also demonstrated a peristaltic locomotion at a speed of ≈2.5 mm s−1, ≈1.9 mm s−1, and ≈1.3 mm s−1 in board, sandpaper, and sand respectively; rolling motion at a speed of 1 cycle s−1, ≈0.66 cycles s−1, and ≈0.33 cycles s−1 in board, sandpaper, and sand respectively; and turning motion of ≈180∘, ≈83∘, and ≈58∘ in board, sandpaper, and sand respectively. The evaluation of the robotic motion and actuation is discussed in detail in this paper.

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“…A widely recognized origami form, Miura fold (or Miura-ori), which has various desired properties, including stretchability and rigid foldability, has been used in engineering, architecture, and artistic design [17][18][19][20] . The strain is effectively suppressed in the rigid facet areas with the deformation mainly localized on the creases, making the Miura-ori compatible with rigid or nonflexible components 21,22 . To our knowledge, very few studies 21 have explored the potential application of the origami structure in stretchable displays, and no systematic research has been carried out on complex SCBs with multiple components installed for system-level sensing applications.…”

Section: Introductionmentioning

confidence: 99%

Miura-ori enabled stretchable circuit boards

Liu

Deng

et al. 2021

npj Flex Electron

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Origami, an ancient form of papercraft, provides a way to develop functional structures for engineering applications. In this paper, we report an approach to design and manufacture a stretchable circuit board (SCB) with origami structures. The benefits of developable, flat-foldable, and rigid-foldable origami-based structures as SCBs are discussed, and a representative structure, Miura fold (or Miura-ori), is chosen to be investigated. Under the constraints induced by the mounted components’ dimensions, the Miura-ori structures for specific applications can be defined. We propose three methods for better fabrication, including direct folding, stiffness modification, and kirigami enhancement, to improve a planar sheet’s foldability. A wearable ECG (electrocardiogram) system based on MO-SCB (Miura-ori enabled SCB) technology is built, and the stretchable portion is made of commercial FPCBs (flexible printed circuit board), providing desired stretchability and reliability. The proposed technology routine is compatible with industrial production and may pave the application of stretchable electronics.

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Large deformation of an arc-Miura structure under quasi-static load

Cited by 44 publications

References 29 publications

Recent advances in auxetics: Applications in cementitious composites

Recent advances in auxetics: Applications in cementitious composites

Untethered Origami Worm Robot with Diverse Multi-Leg Attachments and Responsive Motions under Magnetic Actuation

Miura-ori enabled stretchable circuit boards

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