Flexural Properties of ARCH Lattice Structures Manufactured by Selective Laser Melting

Ding, Ruochen; Ye, Jun; Du, B. X.; Li, Kailun; Pan, Maohua; Zhao, Lu; Guo, Yumeng

doi:10.1002/adem.202001440

Cited by 10 publications

(6 citation statements)

References 20 publications

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“…The model is proved applicable in lattice structures. [ 33–35 ] The expressions of the Gibson–Ashby model are as follows

\frac{σ_{pe}}{σ_{normals}} = C_{1} {(\frac{ρ}{ρ_{normals}})}^{n_{1}} = C_{1} {(\overset{false¯}{ρ})}^{n_{1}}

where

σ_{normals}

is the yield stress of the base material, C 1 is the scaling factor, and n 1 is the scaling exponents.…”

Section: Resultsmentioning

confidence: 99%

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Study of Energy Absorption Characteristics and Deformation Mechanism of Stretching–Bending Synergistic Lattices Under Dynamic Compression

Yang

Liu

et al. 2022

Adv Eng Mater

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The 3D lattice structures have the characteristics of lightweight and high strength, showing good energy absorption characteristics under impact loads. Herein, stretching–bending synergistic lattices are constructed, with the macroscopic backbone in the stretching‐dominated configuration and the mesoscopic cells in the bending‐dominated configuration. The lattices organically combine the two deformation mechanisms of stretching dominant and bending dominant to exhibit high specific strength and excellent specific energy absorption. The particular deformation model and energy absorption characteristics of the stretching–bending synergistic lattices are analyzed. The dynamic compression response of the structure is found to have a unique stress climbing mechanism, which is the critical factor in enhancing its energy absorption ability. The backbone is the main part of structural energy absorption. By changing the relative density of the backbone, the yield strength and specific energy absorption of the stretching–bending synergistic lattices can be increased by more than 78% and 142%, respectively, than the uniform lattices with the same relative density. The hierarchical structure of the stretching backbone and bending cells provides a new approach for the design of impact‐resistant structures.

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“…The model is proved applicable in lattice structures. [ 33–35 ] The expressions of the Gibson–Ashby model are as follows

\frac{σ_{pe}}{σ_{normals}} = C_{1} {(\frac{ρ}{ρ_{normals}})}^{n_{1}} = C_{1} {(\overset{false¯}{ρ})}^{n_{1}}

where

σ_{normals}

is the yield stress of the base material, C 1 is the scaling factor, and n 1 is the scaling exponents.…”

Section: Resultsmentioning

confidence: 99%

“…The model is proved applicable in lattice structures. [33][34][35] The expressions of the Gibson-Ashby model are as follows…”

Section: Effect Of Relative Density Of Backbone Cellsmentioning

confidence: 99%

Study of Energy Absorption Characteristics and Deformation Mechanism of Stretching–Bending Synergistic Lattices Under Dynamic Compression

Yang

Liu

et al. 2022

Adv Eng Mater

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“…In our early work, the energy absorption performance of ARCH lattice structure and body-centered tetragonal (BCT, similar to BCC) lattice structure during quasi-static compression were studied. The specific energy absorption and energy absorption efficiency were obtained by calculating the experiment data, as shown in Figure 3; the ARCH lattice structures have better energy absorption properties than the BCT lattice structures (DING et al , 2020) and have excellent flexural resistance (Ding et al , 2021).…”

Section: Arch Lattice Structurementioning

confidence: 99%

Study on the impact behavior of arch micro-strut (ARCH) lattice structure by selective laser melting (SLM)

Ding

et al. 2022

RPJ

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Purpose The purpose of this paper is to identify the energy absorption characteristics of arch micro-strut (ARCH) lattice structure (different from traditional straight micro-strut lattice structure) under high-speed impact, and promote the development of special-shaped micro-strut lattice structure. Design/methodology/approach The study serves to study the anti-impact and energy absorption characteristics of ARCH lattice structure under different strain rates and different unit layers of lattice structure. In this paper, quasi-static compression and Hopkinson compression bar experiments are used for comparative analysis. Findings The results show that the ARCH lattice structure has obvious strain rate effect. When the strain rate is low, the number of layers of lattice structure has a great influence on the mechanical properties. With the increase of strain rate, the influence of the number of layers on the mechanical properties gradually weakens. So the ARCH lattice structure with fewer layers (less than five layers) should be selected as the impact energy absorbing materials at lower impact rate, while at higher impact rate, the number of layers can be selected according to the actual requirements of components or devices space size. Originality/value This study shows that Arch lattice structure has excellent energy absorption performance, and provides a theoretical reference for the application of ARCH lattice structure in energy-absorbing materials. ARCH lattice structure is expected to be applied to a variety of energy absorption and anti-impact components or devices, such as aircraft black box fall buffer components, impact resistant layer of bulletproof and landing buffer device.

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“…Moreover, additive manufacturing (AM) [16] or 3D printing is a promising and approximately newfangled technique for creating lattice structures. Among the 3D printing process, powder bed fusion (PBF) methods, [17] such as selective laser melting (SLM), [18][19][20][21][22] electron beam melting (EBM), [23,24] and material extrusion (ME), are the most applied processes categorized in AM. On the other hand, powder metallurgy, [25,26] metal textile, investment casting, and deformation forming are still widely used in fabricating lattice structures.In the study by Singh et al, [3] pure copper open-cell ordered foams were fabricated by pressureless sintering and 3D printing in two different unit cell shapes and strut sizes.…”

mentioning

confidence: 99%

Experimental and Simulation Investigation on Energy Absorption of Cu Casting Lattice Structure during Compression

2023

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This investigation aims to assess the mechanical behavior and energy absorption properties of the Cu lattice structures made by investment casting method experimentally and by finite element method (FEM) simulation. The casting pattern of lattice structures is additively manufactured with 2.0, 2.5, and 3.0 mm diameters and the lattice structures produced by investment casting of Cu. Then a uniaxial compression test is applied to measure maximum compressive strength, energy absorption density, efficiency, and specific energy absorption. The simulation and the experimental results indicate that the abovementioned properties of the lattice structures have a significant improvement and properties developments will rise by increasing the diameter of the struts. The mechanical characterization has done for Cu lattice structure with 3.0 mm strut diameter, which endures a stress of 242 MPa at the densification strain and the maximum tolerated stress of 404 MPa. The energy absorption density of this lattice structure is 67 MJ m−3 and has a specific energy absorption of 28 J g−1 followed by an energy absorption efficiency around 70%. The simulation result shows a mathematical connection between the unit cells and the final lattice structures in terms of maximum tolerated stresses, which can help the prediction of the mechanical behavior of these structures.

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Flexural Properties of ARCH Lattice Structures Manufactured by Selective Laser Melting

Cited by 10 publications

References 20 publications

Study of Energy Absorption Characteristics and Deformation Mechanism of Stretching–Bending Synergistic Lattices Under Dynamic Compression

Study of Energy Absorption Characteristics and Deformation Mechanism of Stretching–Bending Synergistic Lattices Under Dynamic Compression

Study on the impact behavior of arch micro-strut (ARCH) lattice structure by selective laser melting (SLM)

Experimental and Simulation Investigation on Energy Absorption of Cu Casting Lattice Structure during Compression

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