Design and study of the crashworthiness of two-way gradient topology star-shaped honeycombs

Mechanics of Advanced Materials and Structures, Год журнала: 2025, Номер unknown, С. 1 - 14

Опубликована: Март 28, 2025

Язык: Английский

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In-plane Dynamics of Symmetric Reentrant Tetrachiral Auxetic Metamaterials

Composites Communications, Год журнала: 2025, Номер unknown, С. 102428 - 102428

Опубликована: Май 1, 2025

Язык: Английский

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A Bioinspired Gradient Curved Auxetic Honeycombs with Enhanced Energy Absorption

International Journal of Mechanical Sciences, Год журнала: 2025, Номер unknown, С. 110189 - 110189

Опубликована: Март 1, 2025

Язык: Английский

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Crashworthiness Analysis of the Gradient Fractal Double Square Tube

physica status solidi (b), Год журнала: 2025, Номер unknown

Опубликована: Фев. 26, 2025

In this article, the gradient fractal double square (GFDS) tube is presented, inspired by hollow structure of rice stems. A numerical analysis evaluating crashworthiness under axial impact conducted. comparative results, it indicated that GFDS exhibits a superior coefficient at equivalent mass and wall thickness when compared to other structural designs. Additionally, in findings from parametric study, revealed increased levels correlate with enhanced energy absorption capabilities, allowing for improved minimal alterations initial peak force. Specifically, identical conditions, an increase results 122.32% enhancement crushing force efficiency (CFE) same mass, while negligible variation, potential decrease 4.28%. The GFDS's capacity augment CFE preserving particularly noteworthy.

Язык: Английский

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Out-of-plane impact characteristics of missing rib-plate type anti-tri-chiral honeycomb

Mechanics of Advanced Materials and Structures, Год журнала: 2024, Номер unknown, С. 1 - 20

Опубликована: Окт. 31, 2024

Chiral honeycomb structures, renowned for their superior mechanical properties, find extensive application in passive safety protection and beyond. However, existing research predominantly centers on chiral neglecting discussions the energy absorption capabilities of anti-chiral structures subjected to out-of-plane impacts. In view this, an innovative design method is proposed this paper construct a series anti-tri-chiral (MATCH-θ) with missing rib-plate excellent crashworthiness by skillfully designing replacing nodal elements structures. Subsequently, effects constitutive angle θ wall thickness t cellular were investigated using validated finite element model, revealing mechanism MATCH-θ. It shown that type structure has better performance compared conventional ATCH-90°. particular, MATCH-110° = 0.1 mm showed 36% increase specific absorption, mean crush force, 35% force efficiency ATCH-90° same mass. The completion study provides valuable insights into optimization future crashworthiness.

Язык: Английский

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Experimental study on crashworthiness of multicellular tubes printed with different materials based on origami folding

Journal of the Brazilian Society of Mechanical Sciences and Engineering, Год журнала: 2025, Номер 47(2)

Опубликована: Янв. 4, 2025

Язык: Английский

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Bending resistance and transverse energy absorption behaviors of auxetic tubes with orthogonal pattern of peanut-shaped perforations

Mechanics of Advanced Materials and Structures, Год журнала: 2025, Номер unknown, С. 1 - 14

Опубликована: Янв. 9, 2025

The perforated auxetic tube with peanut-shaped perforations (PHT) are proposed and its mechanical responses investigated by three-point bending experiment validated finite element simulation. Compared to the elliptical (EHT) under same porosity, PHT exhibits significant improvement of up 100%, 49%, 34%, 148% in peak force, stiffness, ductility energy absorption capacity, respectively. Additionally, a parametric analysis is performed identify role each design parameter provide optimal solutions for design. This study provides valuable guidance enhancing properties tubes.

Язык: Английский

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Crashworthiness analysis of a novel transverse double-gradient hierarchical multi-cellular square tube

Mechanics Based Design of Structures and Machines, Год журнала: 2025, Номер unknown, С. 1 - 28

Опубликована: Янв. 19, 2025

This paper presents an innovative design approach for a square multicellular tube, incorporating the concepts of gradient hierarchical and tree fractals. The involves simultaneous development inner outer parts tube with hierarchies, resulting in transverse double right-angle fractal (TDGHMST). Ten different cross-section schemes are proposed, finite element model is developed using Abaqus/Explicit to analyze energy absorption characteristics under axial impact. Comparing crashworthiness indexes orders TDGHMST structures, findings reveal that third-order double-gradient tubes exhibit significantly higher capacity crushing force efficiency than lower-order tubes. Moreover, performance substantially improved, regardless wall thickness or mass condition. also investigates effect edge length (L1) variation on structural crashworthiness. In addition, analyses geometrical parameters, including (t) aspect ratio (H/L), conducted, demonstrating their significant impact gradient-layered tube. Finally, through comparative studies other tubes, superior proposed dual-gradient verified. These research results provide valuable guidance practical application thin-walled structures optimal

Язык: Английский

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Investigation on energy absorption characteristics of thin-walled structures fabricated by bound metal deposition without using debinding chemical reagents

Journal of Materials Research and Technology, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Язык: Английский

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In-plane mechanical properties of a novel hybrid tetra-chiral honeycomb

Mechanics Based Design of Structures and Machines, Год журнала: 2025, Номер unknown, С. 1 - 22

Опубликована: Янв. 29, 2025

Язык: Английский

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