3D‐Printed Lattice Structures for Sound Absorption: Current Progress, Mechanisms and Models, Structural‐Property Relationships, and Future Outlook

Advanced Science, Journal Year: 2023, Volume and Issue: 11(4)

Published: Nov. 23, 2023

Abstract The reduction of noises, achieved through absorption, is paramount importance to the well‐being both humans and machines. Lattice structures, defined as architectured porous solids arranged in repeating patterns, are emerging advanced sound‐absorbing materials. Their immense design freedom allows for customizable pore morphology interconnectivity, enabling specific absorption properties. Thus far, sound performance various types lattice structures studied they demonstrated favorable properties compared conventional Herein, this review gives a thorough overview on current research status, characterizations terms acoustics proposed. Till date, there four main mechanisms associated with structures. Despite their complexity, can be accurately modelled using acoustical impedance models that focus critical geometries. Four defining features: morphology, relative density, cell size, number cells, have significant influences geometries hence wave dissipation within lattice. Drawing upon structural‐property relationships, classification into three distinct It proposed future attentions placed new concepts, materials selections, multifunctionalities.

Language: Английский

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Superior Strength, Toughness, and Damage‐Tolerance Observed in Microlattices of Aperiodic Unit Cells

Small, Journal Year: 2024, Volume and Issue: 20(23)

Published: Jan. 6, 2024

Abstract Characterized by periodic cellular unit cells, microlattices offer exceptional potential as lightweight and robust materials. However, their inherent periodicity poses the risk of catastrophic global failure. To address this limitation, a novel approach, that is to introduce composed aperiodic cells inspired Einstein's tile, where orientation never repeats in same proposed. Experiments simulations are conducted validate concept comparing compressive responses with those common microlattices. Indeed, exhibit stable progressive deformation, contrasting fracture structures. At relative density, outperform ones, exhibiting strain, energy absorption, crushing stress efficiency, smoothness coefficients at least 830%, 300%, 130%, 160% higher, respectively. These improvements can be attributed aperiodicity, diverse failure thresholds exist locally due varying strut angles contact modes during compression. This effectively prevents both abrupt drops. Furthermore, microlattice exhibits good damage tolerance excellent deformation recoverability, retaining 76% ultimate post‐recovery 30% strain. Overall, adopting cell arrangements achieve damage‐tolerant metamaterials presented.

Language: Английский

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A ribbed strategy disrupts conventional metamaterial deformation mechanisms for superior energy absorption

Virtual and Physical Prototyping, Journal Year: 2024, Volume and Issue: 19(1)

Published: April 8, 2024

Enhancing energy absorption in mechanical metamaterials has been a focal point structural design. Traditional methods often include introducing heterogeneity across unit cells. Herein, we propose straightforward ribbed strategy to achieve exceptional absorption. We demonstrate our concept through modified body-centered cubic (BCC) and face-centered (FCC) truss-lattice (BCCR FCCR). Using stainless-steel 316L samples, compression tests indicate 111% 91% increase specific (SEA) for BCCR FCCR, respectively, along with an enhancement strength by 61.8% 40.7%. Deformation mechanisms are comprehensively elucidated both finite element analysis theoretical calculations. The mitigation of stress concentration at nodes, redistribution load transfer pathways within struts, introduction multiple plastic hinges collectively contribute increased higher strength. rein-based polymer the also exhibit damage tolerance, experiencing only 15% loss maximum after cyclic 20% strain, while maintaining 73% SEA compared their non-ribbed counterpart. This extends beyond discussed structures, presenting itself as generic approach enhance plateau SEA.

Language: Английский

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Multicell interlacing IWP lattice metamaterials with superior low-frequency vibration isolation performance fabricated by laser powder bed fusion

Additive manufacturing, Journal Year: 2025, Volume and Issue: unknown, P. 104681 - 104681

Published: Jan. 1, 2025

Language: Английский

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Bio-inspired vertex-offset lattice metamaterials with enhanced stress stability and energy absorption

Thin-Walled Structures, Journal Year: 2025, Volume and Issue: 210, P. 113060 - 113060

Published: Feb. 7, 2025

Language: Английский

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3D curved-walled same-phase chiral honeycombs with controllable compression-torsion coupling effect via variable cross-section design

Thin-Walled Structures, Journal Year: 2023, Volume and Issue: 193, P. 111267 - 111267

Published: Oct. 17, 2023

Language: Английский

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Multi-feature bionic gradient hierarchical lattice metamaterials with multi-synergistic crushing mechanisms

International Journal of Mechanical Sciences, Journal Year: 2024, Volume and Issue: 283, P. 109383 - 109383

Published: May 13, 2024

Language: Английский

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Mechanical behavior of a novel lattice structure with two-step deformation

Thin-Walled Structures, Journal Year: 2024, Volume and Issue: 197, P. 111580 - 111580

Published: Jan. 6, 2024

Language: Английский

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On multi-stage deformation and gradual energy absorption of 3D printed multi-cell tubes with varying cross-section

Engineering Structures, Journal Year: 2024, Volume and Issue: 319, P. 118839 - 118839

Published: Aug. 23, 2024

Language: Английский

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A stress-driven bi-level design method for variable radius Voronoi porous structures with enhanced mechanical performance

Computer Methods in Applied Mechanics and Engineering, Journal Year: 2025, Volume and Issue: 442, P. 118063 - 118063

Published: May 2, 2025

Language: Английский

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