Fish Cells, a new zero Poisson’s ratio metamaterial—Part I: Design and experiment

Zadeh, Mohammad Naghavi; Dayyani, Iman; Yasaee, Mehdi

doi:10.1177/1045389x20930079

Cited by 29 publications

(3 citation statements)

References 41 publications

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“…When designing compliant topology morphing insulation, factors such as the Poisson ratio must be carefully controlled. Research into mechanical metamaterials [210][211][212][213][214][215] offers a unique avenue of application; metamaterials have internal cavities, and the entire deformation geometry of the structure can be controlled through the Poisson ratio. However, in order to incorporate compliant mechanisms into insulation at an affordable cost, future research will have to carry out design from a manufacturing perspective.…”

Section: Applicable Concepts From Non-building Applicationsmentioning

confidence: 99%

Topology Morphing Insulation: A Review of Technologies and Energy Performance in Dynamic Building Insulation

Stevens,

Crane,

Mulford

2023

Energies

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Topology morphing insulation enables the on-demand switching of thermal properties between insulative and conducting states through shape change. The adaptive nature of these systems allows them to regulate heat transfer by dynamically altering insulation materials or systems in response to changing conditions, including environmental factors, electrical grid dynamics, and occupant requirements. In this article, we highlight the potential of topology morphing insulation for advancing building envelope design, improving energy efficiency, and facilitating on-demand adjustments in effective thermal conductivity. We provide a comprehensive overview of topology morphing insulation, delving into its underlying principles, mechanisms, and potential applications. This review explores cutting-edge research and the potential application of insights from non-building concepts, such as nature, textiles, and origami. Additionally, it examines crucial aspects such as actuation mechanisms, effectiveness, lifecycle considerations, sustainability implications, and manufacturing feasibility. We discuss the potential benefits and challenges associated with implementing topology morphing insulation solutions. Thanks to its transformative capabilities, topology morphing insulation holds tremendous promise for advancing building envelope design, driving energy efficiency improvements, and facilitating responsive changes in effective thermal conductivity.

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Section: Applicable Concepts From Non-building Applicationsmentioning

confidence: 99%

Topology Morphing Insulation: A Review of Technologies and Energy Performance in Dynamic Building Insulation

Stevens,

Crane,

Mulford

2023

Energies

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“…[ 4,5 ] Moreover, some structures with zero PR under specific applications are classified as metamaterials. [ 6–8 ] In addition to examining structures with negative PR, researchers have also paid attention to designing metamaterials with negative thermal expansion. [ 9,10 ] Auxetic materials of different scales, from molecular structures [ 11 ] to macroscale configurations, [ 12,13 ] have been investigated, thus confirming their applicability in various areas.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the Mechanical Properties of Auxetic Metamaterials by Incorporating Nonrectangular Cross Sections into Their Component Rods: A Finite Element Analysis

Kavakli

Davar

2023

Physica Status Solidi (b)

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Herein, four prevalent architectures of metamaterials, namely, the arc‐star, star, reentrant, and antichiral models, are examined to study the effects of the cross‐sectional shapes of component rods on the stiffness and Poisson's ratios of the materials. Four differently sized cross sections of rods are designed, and two types of cross‐sectional geometries—square and I‐shaped—are adopted. Aspect ratios of 0.5, 0.75, and 1 are considered for the I‐shaped cross‐sectional models. A total of 64 metamaterial models are analyzed. The results show that the stiffness and negative Poisson's ratios of the metamaterials depend primarily on their architectures. For example, the antichiral model exhibits approximately 13 times more stiffness than its arc‐star counterpart. The cross‐sectional geometries of the component rods also play an essential role in the mechanical behaviors of the metamaterials. For instance, the antichiral architecture, which consists of bars with an I‐shaped section that has a width‐to‐height ratio of 0.5, has an elastic modulus 9 times greater than that of the model composed of bars with a square cross section. This study shows that it is possible to design metamaterials several times stronger simply by changing the shape of the cross section of their constituent elements without compromising on their lightweight property.

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“…To overcome the shortcomings of the PPR/NPR honeycomb and meet the deformation requirements of the morphing structure, researchers have designed a variety of ZPR honeycombs [ 22 , 23 , 24 , 25 , 26 ], such as accordion honeycombs [ 27 , 28 , 29 ], PZP-NZP hybrid honeycomb [ 20 ], SILICOMB honeycombs [ 23 , 30 ], fish cell honeycomb [ 31 ], chiral cellular structure [ 32 ], four-pointed star shape honeycombs [ 26 ] and reconfigurable mechanism modules structures [ 33 ]. These ZPR honeycombs have been well studied and explored for the initial application of morphing skin [ 20 , 26 , 27 , 34 , 35 ].…”

Section: Introductionmentioning

confidence: 99%

3D Zero Poisson’s Ratio Honeycomb Structure for Morphing Wing Applications

et al. 2022

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Such as flying creatures, morphing aircraft can expand their aerodynamic flight envelopes by changing aerodynamic shapes, significantly improving the scope of application and flight efficiency. A novel 3D Zero Poisson’s Ratio (ZPR) honeycomb structure is designed to meet the flexible deformation requirements of morphing aircraft. The 3D ZPR honeycomb can deform in the three principal directions with smooth borders and isotropic. Analytical models related to the uniaxial and shear stiffnesses are derived using the Timoshenko beam model and validated using the quasi-static compression test. The Poisson’s ratio of the 3D ZPR honeycomb structure has an average value of 0.0038, proving the feasibility of the 3D ZPR concept. Some pneumatic muscle fibers are introduced into the system as flexible actuators to drive the active deformation of the 3D ZPR honeycomb. The active 3D ZPR honeycomb can contract by 14.4%, unidirectionally bend by 7.8°, and multi-directions bend under 0.4 Mpa pressure. Both ZPR properties and flexible morphing capabilities show the potential of this novel 3D ZPR configuration for morphing wings.

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Fish Cells, a new zero Poisson’s ratio metamaterial—Part I: Design and experiment

Cited by 29 publications

References 41 publications

Topology Morphing Insulation: A Review of Technologies and Energy Performance in Dynamic Building Insulation

Topology Morphing Insulation: A Review of Technologies and Energy Performance in Dynamic Building Insulation

Enhancing the Mechanical Properties of Auxetic Metamaterials by Incorporating Nonrectangular Cross Sections into Their Component Rods: A Finite Element Analysis

3D Zero Poisson’s Ratio Honeycomb Structure for Morphing Wing Applications

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