Enhancement in the mechanical behaviour of a Schwarz Primitive periodic minimal surface lattice structure design

Guo, Xin; Ding, Jialin; Li, Xinwei; Qu, Shuo; Song, Xu; Fuh, Jerry Ying Hsi; Lu, Wen Feng; Zhai, Wei

doi:10.1016/j.ijmecsci.2021.106977

Cited by 87 publications

(16 citation statements)

References 71 publications

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“…Some TPMS lattices were investigated in both versions, such as gyroid [ 44 , 45 ], diamond [ 15 , 46 ] and IWP [ 47 , 48 ]. Other TPMS structures have been studied only in the sheet-based version: Schwarz primitive [ 49 , 50 ], FRD [ 47 , 51 ] and Neovius [ 52 , 53 ]. Figure 6 shows commonly known TPMS structures.…”

Section: Classification Of Lattice Structuresmentioning

confidence: 99%

Titanium Lattice Structures Produced via Additive Manufacturing for a Bone Scaffold: A Review

Distefano

Pasta

2023

JFB

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The progress in additive manufacturing has remarkably increased the application of lattice materials in the biomedical field for the fabrication of scaffolds used as bone substitutes. Ti6Al4V alloy is widely adopted for bone implant application as it combines both biological and mechanical properties. Recent breakthroughs in biomaterials and tissue engineering have allowed the regeneration of massive bone defects, which require external intervention to be bridged. However, the repair of such critical bone defects remains a challenge. The present review collected the most significant findings in the literature of the last ten years on Ti6Al4V porous scaffolds to provide a comprehensive summary of the mechanical and morphological requirements for the osteointegration process. Particular attention was given on the effects of pore size, surface roughness and the elastic modulus on bone scaffold performances. The application of the Gibson–Ashby model allowed for a comparison of the mechanical performance of the lattice materials with that of human bone. This allows for an evaluation of the suitability of different lattice materials for biomedical applications.

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Section: Classification Of Lattice Structuresmentioning

confidence: 99%

Titanium Lattice Structures Produced via Additive Manufacturing for a Bone Scaffold: A Review

Distefano

Pasta

2023

JFB

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“…Strength and modulus are normalized by specimen density, as shown in Figure f. Compared to other microlattice metamaterials that are also fabricated using metal AM with a variety of commonly used materials (e.g., Ti–6Al–4V and Al-based alloys), ,,− the present microlattices possess close specific modulus but much higher specific strength ranging from 64.8 to 81.2 MPa·cm 3 /g. It is noteworthy that the introduction of micro-perforations in our design inevitably reduces the modulus, but the hybrid truss-plate architecture retains a high strength for the microlattice.…”

Section: Resultsmentioning

confidence: 92%

“…Besides, SEA defined as normalS normalE normalA = ∫ 0 ε d e n σ .25em normald ε / ρ normalc is calculated. ε den denotes the densification strain, that is, integral termination point, ,, and ρ c denotes the density of the lattices. As shown in Figure g, comparing across the literature, ,− BMMMs show superior performance with a much higher SEA metric.…”

Section: Resultsmentioning

confidence: 99%

New Class of Multifunctional Bioinspired Microlattice with Excellent Sound Absorption, Damage Tolerance, and High Specific Strength

Wang

et al. 2023

ACS Appl. Mater. Interfaces

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Although mutually independent, simultaneous sound absorption and superior mechanical properties are often sought after in a material. One main challenge in achieving such a material will be on how to design it. Herein, we propose a bamboo-inspired design strategy to overcome the aforementioned challenges. Building on top of the basic octet-truss design, we introduce a hollow-tube architecture to achieve lightweight property and mechanical robustness and a septum-chamber architecture to introduce acoustic resonant cells. The concept is experimentally verified through samples fabricated using selective laser melting with the Inconel 718 alloy. High sound absorption coefficients (>0.99) with broadband spectra, damage-tolerant behavior, high specific strength (up to 81.2 MPa·cm3/g), and high specific energy absorption of 40.1 J/g have been realized in this design. The sound absorption capability is attributed to Helmholtz resonance through the pore-and-cavity morphology of the structure. Microscopically speaking, dissipation primarily occurs via the viscous frictional flow and thermal boundary layers on the air and microlattice interactions at the narrow pores. The high strength is in turn attributed to the near-membrane state of stress in the plate structures and the excellent strength of the base material. Overall, this work presents a new design concept for developing multifunctional metamaterials.

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“…They used LS-DYNA for the simulation of mechanical behavior under quasi-static collapse. Guo et al 51 used selective laser melting machine for printing lattice structures with steel. Their work was done experimentally and numerically under compression.…”

Section: Introductionmentioning

confidence: 99%

Experimental study of the core role of GFRP and LDPE on the collapse behavior of absorbers printed with PLA and ABS

Deng

Xie

Liu

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part L:

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Since the advent of polymeric materials, many structures have always been built for engineering purposes. On the one hand, the emergence of composites containing glass fibers has had a significant impact on reducing the weight of structures in various industries. On the other hand, with the advent of 3D printers, many limitations for the geometry of engineering structures were removed. In this research, due to the wide application of these two sciences, a new type of composite absorbers has been introduced. The presented absorbers have glass fiber-reinforced polymer cores (GFRP) or low-density polyethylene cores (LDPE), the shells of each sample are made of PLA or ABS. In this study, 24 different samples were tested under quasi-static loading. The samples were examined in three different groups. In the first group, no cores were used, but in the second group, GFRP cores were used, and in the third group, LDPE cores were used. Triangular, trapezoidal, semielliptical, and square sections were studied, and the results showed that the lowest maximum force was related to samples with semielliptical cross section, then the maximum force increased by changing the cross section from triangular to trapezoidal and then to a square. In addition, the maximum force was higher in the GFRP core than in the LPDE core.

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Enhancement in the mechanical behaviour of a Schwarz Primitive periodic minimal surface lattice structure design

Cited by 87 publications

References 71 publications

Titanium Lattice Structures Produced via Additive Manufacturing for a Bone Scaffold: A Review

Titanium Lattice Structures Produced via Additive Manufacturing for a Bone Scaffold: A Review

New Class of Multifunctional Bioinspired Microlattice with Excellent Sound Absorption, Damage Tolerance, and High Specific Strength

Experimental study of the core role of GFRP and LDPE on the collapse behavior of absorbers printed with PLA and ABS

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