The deployment of a cylinder based on origami with Kresling pattern, whose basic mechanisms are formed by the buckling thin cylindrical shell under torsional loading, is studied in this paper. model consists identical triangular panels cyclic symmetry and has small displacement internal inextensional mechanism. First, geometric formulation design problem presented. Then, assuming that folding process uniform, bistable behavior discussed. It can be found that, during deployment, dimensionless...

Artificially-structured materials with negative Poisson's ratio, also known as auxetics, have been the focus of numerous studies over past few decades. In this paper, using a group-theory-based symmetry reduction approach, and based on structure composed rotating rigid triangles, we propose new approach to designing auxetic metamaterials. These metamaterials can be fabricated by variety active or smart structural members that undergo different deformations when subjected external...

In engineering design, origami structures are frequently characterized by their geometry-shifting behavior, mechanical properties, lightness, and appealing aesthetic qualities. particular, conical have attracted increasing attention in recent years owing to excellent energy absorption performance. However, designing with customizable geometry folding morphology has remained a less explored research area. this paper, an artificial intelligence (AI)-based framework is proposed for the design...

In recent years, energy-dissipation devices have gained significant attention in seismic protection engineering because of their effectiveness mitigating the destructive effects earthquakes. Inspired by an origami pattern invented Ron Resch, this study, we propose a novel type brace to guide deformation process and prevent global buckling structures. To end, parametric geometric model is developed, followed exploring different parameters on structural collapse modes. Subsequently, using...

Abstract Flat-foldable origami tessellations are periodic geometric designs that can be transformed from an initial configuration into a flat-folded state. There is growing interest in such tessellations, as they have inspired many innovations various fields of science and engineering, including deployable structures, biomedical devices, robotics, mechanical metamaterials. Although range design methods been developed to generate fold patterns, some non-trivial variations involve challenges,...

A prestressed cable-strut structure is usually regarded as a mechanism before being prestressed. Under the action of initial prestresses, internal infinitesimal mechanisms can be rigidified, resulting in achieving desired structural stiffness. Therefore, feasible prestress design key to develop and analyze novel structures. In this study, an effective optimization method presented determine optimal modes with predefined geometry multiple self-stress states. Two models based on states...

Origami structures have been widely used in various engineering fields due to their desirable properties such as geometric transformability and high specific energy absorption. Based on the Kresling origami pattern, this study proposes a type of thin-walled tube structural configuration which is found by mixed-integer linear programming model. Using finite element analysis, reasonable with pattern firstly analyzed. Then, influences different material properties, rotation angle upper lower...

Abstract Origami tessellations can be folded from a given planar pattern into three-dimensional object with specific geometric properties, inspiring developments in various fields of science and engineering such as deployable structures, energy absorption devices, reconfigurable robots, metamaterials. However, the range existing origami patterns functional properties flat-foldability is rather scant, analytical solutions to constraint equations arising design process are generally highly...

Abstract Origami has attracted tremendous attention in recent years owing to its capability of inspiring and enabling the design development reconfigurable structures mechanisms for applications various fields such as robotics biomedical engineering. The vast majority origami are folded starting from an initial two-dimensional crease pattern. However, general, planar configuration a pattern is singular state when starts fold. Such results different motion possibilities rigid or non-rigid...

Abstract Origami structures are often attractive for a broad range of applications in engineering, design, and robotics because their useful characteristics such as reconfigurable geometry, tunable stiffness, energy absorption capacity. Although algorithms software is available origami design folding analysis, they generally isolated from other computational tools. To contribute to filling this research gap, we propose unified parametric workflow based on grasshopper combined with...

Kirigami, the ancient technique of paper cutting, has been successfully applied to enhance stretchability and ductility nanoscale graphene. However, existing experimentally realized graphene kirigami (GK) are created by introducing parallel cuts, exhibiting exceptional mechanical properties in direction perpendicular cuts but brittleness other direction. To overcome this limitation, we propose a fractal-cut GK with rotating triangular units, enabling high both planar directions. We...

design optimization Design-material transition (DMT) threshold A B S T R C TThe ribbon kirigami pattern has garnered significant attention over the past decade because of its interesting geometric and mechanical properties such as extreme elongation high ductility, making it a viable choice for various applications developing medical devices flexible electronics.Despite promising prospects this type morphing structure, deformation mechanism sensitivity to materials parameters have remained...