Compressive behavior of improved star-shaped honeycomb multi-cell structures: Experiments and simulations

Mechanics of Advanced Materials and Structures, Год журнала: 2025, Номер unknown, С. 1 - 15

Опубликована: Янв. 27, 2025

Язык: Английский

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Analysis of band structures using ω ( k )- and k ( ω )-approaches for two-dimensional truss metamaterials under residual strain and variations in mass distribution

Mechanics of Advanced Materials and Structures, Год журнала: 2025, Номер unknown, С. 1 - 18

Опубликована: Янв. 2, 2025

Metamaterials are part of the expanding field composite materials with engineered structures, though some areas remain underdeveloped. One these involves analysis complex band structures (k(ω)-approach), more particularly to truss cells, in comparison purely real ones (ω(k)-approach). We seek fill this knowledge gap by presenting and discussing employment both approaches on while analyzing how stiffness mass impact structure. Two-dimensional metamaterial addressing distinct (BG) phenomena structure already described literature, evaluated under varying conditions residual strain distribution between nodes elements. It is demonstrated that modify characteristics, changes frequency range attenuation behavior based cell type BG generation phenomenon. These also related merging BGs for two, or even three, equal phenomena. The study examines increasing elements weakens association natural frequencies resonant modes, leading reduction distinguishing features. Additional observations from literature expected verified discussed.

Язык: Английский

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Stress-optimized design of plate lattice material structure

Mechanics of Advanced Materials and Structures, Год журнала: 2025, Номер unknown, С. 1 - 18

Опубликована: Март 11, 2025

Язык: Английский

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Data-driven inverse design of auxetic metamaterials: Customizing concentric double-arrow honeycomb (CDAH) structures

Mechanics of Advanced Materials and Structures, Год журнала: 2025, Номер unknown, С. 1 - 15

Опубликована: Март 23, 2025

Metamaterial design often relies on empirical methods, limiting tunability and customization. This study introduces a data-driven approach for the inverse of double-arrow honeycomb auxetic metamaterials, enabling tailored auxeticity. Parametric modeling defined structure using key geometric parameters, numerical model under tensile conditions was validated experimentally. Correlation analysis revealed relationships between parameters Poisson's ratio. Forward prediction models BPNN GA-BPNN demonstrated high accuracy robustness. The results highlight effectiveness proposed method in achieving precise auxeticity customization, advancing metamaterials.

Язык: Английский

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Generalized Hooke’s law for origami chiral spring

Mechanics of Advanced Materials and Structures, Год журнала: 2025, Номер unknown, С. 1 - 9

Опубликована: Апрель 12, 2025

Язык: Английский

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