Rigid–flexible coupling design and reusable impact mitigation of the hierarchical-bistable hybrid metamaterials

International Journal of Impact Engineering, Год журнала: 2024, Номер 194, С. 105075 - 105075

Опубликована: Авг. 13, 2024

Язык: Английский

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Crushing behavior and energy absorption of node self-locked Kagome honeycomb

Mechanics of Advanced Materials and Structures, Год журнала: 2024, Номер unknown, С. 1 - 18

Опубликована: Окт. 9, 2024

This work proposes a self-locked Kagome honeycomb (SLKH) structure to realize better balance between energy absorption and cost efficiency. The uses simple creative bending preparation method form triangle nested self-locking pattern with distinct layers, rich shapes, easy assembly, flexibility quasi-static experiments numerical simulations are employed investigate the behavior dynamic response. Numerical analysis is conducted reveal influence of cell size, angle at connecting plate, number bent plates on performance SLKH. Additionally, theoretical estimation model for mean crushing force SLKH established, providing guidance efficient parameter design selection. results demonstrate that exhibits superior low cost.

Язык: Английский

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A novel auxetic acoustic metamaterial plate with enlarged bandgap

Extreme Mechanics Letters, Год журнала: 2025, Номер unknown, С. 102291 - 102291

Опубликована: Янв. 1, 2025

Язык: Английский

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Design, fabrication and mechanical properties of an auxetic cylindrical sandwich tube with improved energy absorption

Thin-Walled Structures, Год журнала: 2025, Номер unknown, С. 113036 - 113036

Опубликована: Фев. 1, 2025

Язык: Английский

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Inverse design framework of hybrid honeycomb structure with high impact resistance based on active learning

Defence Technology, Год журнала: 2025, Номер unknown

Опубликована: Апрель 1, 2025

Язык: Английский

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3D compression-twist lattice metamaterials for surface reconfigurability of future architecture

Composite Structures, Год журнала: 2024, Номер 337, С. 118075 - 118075

Опубликована: Март 24, 2024

Язык: Английский

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Analysis of Mechanical Properties and Parameter Dependency of Novel, Doubly Re-Entrant Auxetic Honeycomb Structures

Polymers, Год журнала: 2024, Номер 16(17), С. 2524 - 2524

Опубликована: Сен. 5, 2024

This study proposes a new, doubly re-entrant auxetic unit-cell design that is based on the widely used honeycomb structure. Our objective was to develop structure preserves and enhances advantages of while eliminating all negative aspects. The geometry aims enhance mechanical properties, buckling deformation characteristic mechanism. effects geometric modification are described evaluated using two parameters, offset deg. A series experiments were conducted wide range parameters these parameters. Specimens printed via vat photopolymerization process subjected compression test. aim investigate properties (energy absorption compressive force) behaviour specimens in relation relevant novel achieved intended outperforming original Increasing deg results increasing energy capability (up 767%) maximum force 17 times). right parameter choice eliminates continuous behaviour. Finally, dependency predicted by analytical approximation as well.

Язык: Английский

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Enhancing the structural stiffness and energy absorption of re-entrant auxetic honeycombs using folded stiffeners

Thin-Walled Structures, Год журнала: 2024, Номер unknown, С. 112504 - 112504

Опубликована: Окт. 1, 2024

Язык: Английский

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Adjustable Ultra‐Light Mechanical Negative Poisson's Ratio Metamaterials with Multi‐Level Dynamic Crushing Effects

Small, Год журнала: 2024, Номер 20(43)

Опубликована: Июль 14, 2024

Mechanical metamaterials with multi-level dynamic crushing effects (MM-MLs) are designed in this study through coordinate transformation and mirror arrays. The mechanical of the diameter length ratio struts connecting rods, Euler angles, cell numbers on properties investigated separately. MM-ML can exhibit significant two-level platform stress, local cells first stress stage undergo rotational motion, while second mainly involves collapse compression bending. Although increasing rods increase range Poisson's ratio, it will reduce level energy absorption. Increasing angle strain interval improve absorption capacity. In addition, number maintaining a constant relative density effectively enhance has parameter controllability, achieve different regions, ranges ratios, requirements according to application scenario, demonstrate functional diversity compared existing research. design scheme provide ideas for adaptive protection requirements.

Язык: Английский

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In-plane crashworthiness study of bio-inspired metallic lattice structure based on deep-sea glass sponge

Thin-Walled Structures, Год журнала: 2024, Номер unknown, С. 112505 - 112505

Опубликована: Сен. 1, 2024

Язык: Английский

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