Blast resistance analysis of butterfly-like reentrant circular honeycomb sandwich structure

Mechanics of Advanced Materials and Structures, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 16

Published: Nov. 13, 2024

Negative Poisson honeycomb has great potential in the field of protection against explosive shock due to its unique tensile expansion characteristics and excellent energy absorption capacity. However, there are limitations types performance enhancement current negative sandwich structure (HSS), so further improve blast resistance conventional HSS reduce mass structures, a butterfly-type reentrant circular is designed this paper. In analysis, JC constitutive model related mechanical properties AL-6XN304 alloy steel was used for simulation, explosion load applied using CONWEP loading mode ABAQUS, process analyzed numerically detail. Explosive simulation square-core first performed, precision numerical verified by comparing it with experimental result existing literature. Secondly, dynamic response imitation under air investigated, compared that four HSSs same loading. The effects mass, cell thickness, wall radius, length parameters on were also explored. Findings indicate butterfly-like divisible into three distinct phases: core compression, overall deformation, equilibrium vibration. Compared square, circular, hexagonal, star HSSs, center displacement front panel 22.4, 20.2, 8.8, 23.0% lower, respectively, rear 24.4, 20.6, 7.1, 8.2% respectively. addition, central area lowest deflection. Therefore, best resistance. deflection at point escalates as grows, diminishes thickening wall, lessens radius shrinks, shortens, can be improved.

Language: Английский

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Tunable topological phases in quantum kirigamis

Physical review. B./Physical review. B, Journal Year: 2025, Volume and Issue: 111(8)

Published: Feb. 3, 2025

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Numerical modeling and validation of auxetic cell geometries for FDM infill pattern improvement

Progress in Additive Manufacturing, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 5, 2025

Language: Английский

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Study of the Absorption Energy of Auxetic Structures with Non-Newtonian Fluids

Materials, Journal Year: 2025, Volume and Issue: 18(6), P. 1263 - 1263

Published: March 13, 2025

Ballistic impact protection has been enhanced through the use of advanced materials, such as shear thickening fluids (STFs) and auxetic structures. These materials provide high energy absorption, flexibility, comfort, offering promising solutions for development lightweight effective personal protective equipment. The combination STFs structures shown to optimize resistance while maintaining mobility. To validate this, a composite made an structure impregnated with polyurethane STF mixture was evaluated absorption. structure, fabricated using high-tenacity polyester, demonstrated superior absorption compared standard foams. impregnation 200 400 wt% Biresin mixtures significantly its capacity up 76% reference. With addition at 25:75 ratio into biresin matrix, improvements were also verified in 7%, due non-Newtonian behavior STF, demonstrating potential these composites low-impact applications.

Language: Английский

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Effective elastic modulus and energy absorption performance evaluations of a novel re-entrant chiral hybrid honeycomb

Applied Mathematics and Mechanics, Journal Year: 2025, Volume and Issue: unknown

Published: April 25, 2025

Language: Английский

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Pneumatically Actuated Morphing Manipulator Employing Shape Memory Polymer-based External Auxetic Structure

Published: April 22, 2025

Language: Английский

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Synclastic behavior of auxetic metamaterials

Engineering Structures, Journal Year: 2024, Volume and Issue: 326, P. 119607 - 119607

Published: Dec. 30, 2024

Language: Английский

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