Mechanical Properties of Internally Hierarchical Multiphase Lattices Inspired by Precipitation Strengthening Mechanisms

Bian, Yijie; Wang, Ruicheng; Yang, Fan; Li, Puhao; Song, Yicheng; Feng, Jian‐Jun; Wu, Wenwang; Li, Ziyong; Lü, Yang

doi:10.1021/acsami.2c20063

Cited by 16 publications

(4 citation statements)

References 68 publications

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“…The suture interface in these biological materials plays a critical role between the microscale and component size; , these biological materials can efficiently improve the load transmission and structural connection at the mesoscopic scale. ,,− However, we found that the elytra load-response mechanism of the suture structure has not been fully explored. P. diabolicus usually survives when animals trample on them, and then the shell starts the self-recovery process by using stored elastic energy, which contributes to the suturing mechanism of the elytra.…”

Section: Introductionmentioning

confidence: 90%

Suture Interface Inspired Self-Recovery Architected Structures for Reusable Energy Absorption

Jiang

Zhang

2023

ACS Appl. Mater. Interfaces

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Designing materials and structures with high energy absorption and self-recoverability remains a challenge for reusable energy absorption, particularly in aerospace engineering applications (i.e., planetary landers). While the prevalent design methods of reusable energy absorbers mainly use the mechanical instability of tilted and curved beams, the limited energy absorption capabilities and low strength of tilted or curved beams limit performance improvement. In nature, Phlorodes diabolicus has evolved extreme impact resistance, in which the suture interface structure plays a key role. Herein, we propose a convex interface slide design strategy for reusability and energy absorption through friction interface, geometry, and bending elasticity, inspired by the elytra of Phlorodes diabolicus. Convex interfaces slide to achieve a more than 270% higher energy absorption capacity per unit volume than the curved beams. The convex interface slide design can be easily integrated with other structures to achieve multiple functions, such as various shapes and self-recoverability. Furthermore, we developed a theoretical model to predict the mechanical behavior and energy absorption performance. Our strategy opens up a new design space for creating reusable energy-absorbing structures.

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Section: Introductionmentioning

confidence: 90%

Suture Interface Inspired Self-Recovery Architected Structures for Reusable Energy Absorption

Jiang

Zhang

2023

ACS Appl. Mater. Interfaces

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“…Recently, biomimetic and hierarchical strategies have introduced greater complexity and functionality for microlattice structures. [3,[28][29][30][31][32][33] However, these structures described above are all characterized by the periodic arrangements of unit cells, which lead to materials with uniform mechanical responses subjected to external loads. [34] Many of these structures thus suffer from global failure modes such as coherent shear bands and fractures; they hence display fluctuating stress-strain curves without a smooth and gradual plateau.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, biomimetic and hierarchical strategies have introduced greater complexity and functionality for microlattice structures. [ 3,28–33 ]…”

Section: Introductionmentioning

confidence: 99%

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

Wang,

Li,

et al. 2024

Small

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

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“…Structures inspired by hierarchical design strategies consistently exhibited superior mechanical properties compared to traditional materials. [32,33] Therefore, developing new lattice structure configurations with high specific elastic modulus and high specific yield strength through hierarchical design strategies is of great significance for promoting the application of lightweight and high-strength lattice materials.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of Selective Laser Melting‐Processed Multihierarchical Lattice Structure Based on Body‐Centered‐Cubic Unit Cell

Nie,

Ren,

Gao

et al. 2024

Adv Eng Mater

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In this work, three types of multi‐hierarchical lattice structures (MHLSs) with different configurations were designed based on the body‐centered cubic (BCC) unit cell. The designed lattice structures were fabricated using Ti‐6Al‐4V powder as feedstock material through selective laser melting (SLM) technology. The microstructure and surface morphology of the SLM‐formed samples were observed by optical microscopy and scanning electron microscopy, respectively. Theoretical calculation and quasi‐static compression experiment were carried out to investigate their mechanical properties. The result showed that the size error of slave‐cell with small strut diameters was greater than that of master‐cell with larger strut diameters. All MHLSs exhibited superior mechanical properties compared to the BCC lattice structure. Moreover, the specific elastic modulus and specific yield strength of MHLSs with the best mechanical properties were 70.1 % and 51.0 % higher than that of BCC lattice structure, respectively. Meanwhile, theoretical calculation results of the elastic modulus and yield strength were consistent with the results of quasi‐static compression testing. The fracture morphology analysis indicated that the struts of the MHLSs samples exhibit a mixed brittle‐plastic fracture mode, while the nodes exhibit a plastic fracture mode.This article is protected by copyright. All rights reserved.

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Mechanical Properties of Internally Hierarchical Multiphase Lattices Inspired by Precipitation Strengthening Mechanisms

Cited by 16 publications

References 68 publications

Suture Interface Inspired Self-Recovery Architected Structures for Reusable Energy Absorption

Suture Interface Inspired Self-Recovery Architected Structures for Reusable Energy Absorption

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

Mechanical Properties of Selective Laser Melting‐Processed Multihierarchical Lattice Structure Based on Body‐Centered‐Cubic Unit Cell

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