Numerical and experimental studies on compressive behavior of Gyroid lattice cylindrical shells
| Autor: | Yongbo Jiang, Shizheng Fang, Ying Li, Zihao Chen, Xiaofei Cao, Yongzhen Wang, Xianben Ren, Daining Fang, Tian Zhao |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Mechanical Engineering 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Finite element method 0104 chemical sciences Mechanics of Materials Energy absorption Lattice (order) lcsh:TA401-492 Relative density General Materials Science lcsh:Materials of engineering and construction. Mechanics of materials Selective laser melting Composite material 0210 nano-technology Power function Gyroid Parametric statistics |
| Zdroj: | Materials & Design, Vol 186, Iss, Pp-(2020) |
| ISSN: | 0264-1275 |
| Popis: | In this paper, Gyroid lattice cylindrical shell (LCS) specimens were designed by a newly proposed mapping methodology and were fabricated by selective laser melting (SLM) technology. Their energy absorption and deformation modes were investigated through quasi-static compression tests. A finite element model (FEM) was proposed, which was validated by the experimental results, for a further study on the compressive behavior of the Gyroid LCS. Based on the numerical study, it was found that Gyroid LCS showed superior energy absorption to the hexagonal LCS and triangular LCS with the same density. In addition, a parametric study indicated that main energy absorption factors, namely total energy absorption, specific energy absorption and mean crushing load, were in power function relationship with the relative density. Finally, it was found that thickness gradient and geometric gradient had significant effects on the failure modes of Gyroid LCS under compression. The research in this paper is expected to provide some guidance for the design of energy absorption devices or structures. Keywords: Gyroid lattice cylindrical structure, Energy absorption, Triply periodic minimal surfaces, Quasi-static compression |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect