Characterization and enhancement of quasi-static and shear mechanical properties of 3D printed lightweight SiOC lattices: Effects of structural design and parameters

Shi, Kaiwen; Yang, Wenqiang; Mei, Hui; Yan, Yuekai; Xu, Li; Cheng, Laifei; Zhang, Litong

doi:10.1016/j.jeurceramsoc.2023.06.066

Cited by 9 publications

(2 citation statements)

References 34 publications

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“…The parameter 'n' is of considerable importance in characterizing the various forms of deformation that occur within cellular structures [6,[60][61][62][63]. The Gibson-Ashby model, a cornerstone in the analysis of cellular materials [64][65][66], establishes critical relationships among a multitude of parameters inherent to cellular structures.…”

Section: Gibson-ashby Modelmentioning

confidence: 99%

“…Lattice structures-especially the Gyroid TPMS lattice, which is based on the triply periodic minimal surface (TPMS)-are becoming more and more popular in fields like biomedical, aerospace, and automotive engineering. This is due to their remarkable mechanical characteristics and adaptability [4][5][6][7][8][9], enhancing both shape and function; the bio-inspired Gyroid TPMS lattice draws its design ideas from nature, such as insect wings [10][11][12][13][14]. These lattices are perfect for distributing stresses and absorbing energy, which are essential for creating robust yet lightweight solutions.…”

Section: Introductionmentioning

confidence: 99%

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Enhanced Energy Absorption with Bioinspired Composite Triply Periodic Minimal Surface Gyroid Lattices Fabricated via Fused Filament Fabrication (FFF)

Alemayehu,

Todoh

2024

JMMP

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Bio-inspired gyroid triply periodic minimum surface (TPMS) lattice structures have been the focus of research in automotive engineering because they can absorb a lot of energy and have wider plateau ranges. The main challenge is determining the optimal energy absorption capacity and accurately capturing plastic plateau areas using finite element analysis (FEA). Using nTop’s Boolean subtraction method, this study combined walled TPMS gyroid structures with a normal TPMS gyroid lattice. This made a composite TPMS gyroid lattice (CTG) with relative densities ranging from 14% to 54%. Using ideaMaker 4.2.3 (3DRaise Pro 2) software and the fused deposition modeling (FDM) Raise3D Pro 2 3D printer to print polylactic acid (PLA) bioplastics in 1.75 mm filament made it possible to slice computer-aided design (CAD) models and fabricate 36 lattice samples precisely using a layer-by-layer technique. Shimadzu 100 kN testing equipment was utilized for the mechanical compression experiments. The finite element approach validates the results of mechanical compression testing. Further, a composite CTG was examined using a field emission scanning electron microscope (FE-SEM) before and after compression testing. The composite TPMS gyroid lattice showed potential as shock absorbers for vehicles with relative densities of 33%, 38%, and 54%. The Gibson–Ashby model showed that the composite TPMS gyroid lattice deformed mainly by bending, and the size effect was seen when the relative densities were less than 15%. The lattice’s relative density had a significant impact on its ability to absorb energy. The research also explored the use of these innovative foam-like composite TPMS gyroid lattices in high-speed crash box scenarios to potentially enhance vehicle safety and performance. The structures have tremendous potential to improve vehicle safety by acting as advanced shock absorbers, which are particularly effective at higher relative densities.

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Section: Gibson-ashby Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Enhanced Energy Absorption with Bioinspired Composite Triply Periodic Minimal Surface Gyroid Lattices Fabricated via Fused Filament Fabrication (FFF)

Alemayehu,

Todoh

2024

JMMP

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Novel triply periodic minimal surfaces sandwich structures: Mechanical performance and failure analysis

Guo,

Li,

Wang

et al. 2024

Polymer Composites

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Sandwich structures are known for their exceptional mechanical properties and widespread applications. This study integrates additive manufacturing (AM) technology, experiments, theoretical equations, and numerical simulations to investigate a novel lightweight sandwich structure with a core based on Triply Periodic Minimal Surfaces (TPMS). The core incorporates Primitive, Neovius, and Diamond structures and is designed and manufactured using AM. Three‐point bending experiments are conducted to assess bending performance, failure modes, and energy absorption capability. A numerical model is established to analyze behavior under bending loads, validated through comparison with theoretical equations and numerical simulations, focusing on stress concentration areas. A parametric study investigates the effects of skin material, thickness, and TPMS core relative density on bending performance and energy absorption capacity. Furthermore, a functionally graded core layer with a gradient change in relative density is designed to study its influence on bending performance. The parameters of the core have a decisive impact on TPMS sandwich panel performance. This study demonstrates that sandwich structures with TPMS cores can be designed to possess desirable bending performance and energy absorption capacity, providing insights for future engineering applications.Highlights A novel TPMS sandwich structure is fabricated using 3D printing technology. The gradient relative density core is introduced. The bending performance and failure behavior of the structure are evaluated. A parametric study was conducted to investigate the effects on performance.

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Achieving high geometric fidelity in vat photopolymerization additive manufacturing through liquid surface support

Yuan,

Cai,

Sun

et al. 2024

Additive Manufacturing

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Characterization and enhancement of quasi-static and shear mechanical properties of 3D printed lightweight SiOC lattices: Effects of structural design and parameters

Cited by 9 publications

References 34 publications

Enhanced Energy Absorption with Bioinspired Composite Triply Periodic Minimal Surface Gyroid Lattices Fabricated via Fused Filament Fabrication (FFF)

Enhanced Energy Absorption with Bioinspired Composite Triply Periodic Minimal Surface Gyroid Lattices Fabricated via Fused Filament Fabrication (FFF)

Novel triply periodic minimal surfaces sandwich structures: Mechanical performance and failure analysis

Achieving high geometric fidelity in vat photopolymerization additive manufacturing through liquid surface support

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