Compressive enhancement gyroid lattice with implicit modeling implementation and modified G-A model property prediction

Chen, Ruiguang; Wang, Shanshan; Wu, Zhining; Jia, Yunfeng; Zhang, Weijian; Cao, Boxuan; Xu, Song; Ma, Qingping; Li, Changlin; Du, Jun; Yu, Suzhu; Wei, Jun

doi:10.1016/j.matdes.2023.112153

Cited by 8 publications

(1 citation statement)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The mechanical stress-strain response of the composite TPMSgyroid lattice with 33% and 38% relative density is approximately overlapped, indicating repeatability. There are three interesting regions that were realized for the composite TPMS gyroid with 54% relative density, and the conventional TPMS lattice resembles the Gibson and Ashby model described in [77][78][79][80][81][82]: a linear elastic region, a plateau region, and a densification region. There were no significant mechanical properties lost during the collapse scenario, except for the composite TPMS gyroid lattice with a relative density lower than 15% (Figures 5a and 6a,b).…”

Section: The Mechanical Properties and Compressive Responsementioning

confidence: 99%

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

Alemayehu,

Todoh

2024

JMMP

View full text Add to dashboard Cite

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.

show abstract