Du Xuefei, Guo Yanfeng, Fu Yungang, Han Xuxiang, Wei Qing
School of Materials Science and Engineering, Jiujiang University, Jiujiang, 332005, Jiangxi, People's Republic of China.
Jiangxi Province Engineering Research Center of Materials Surface Enhancing and Remanufacturing, School of Mechanical and Materials Engineering, Jiujiang University, Jiujiang, 332005, People's Republic of China.
Sci Rep. 2024 Sep 28;14(1):22460. doi: 10.1038/s41598-024-73351-6.
This work proposed an approach to multi-component non-metallic materials, namely regular polygonal paper honeycomb sandwich tubes filled with polyethylene (PE) foam, and focused on the influence of drop impact parameters and structural parameters on the deformation characteristics and energy absorption of the filled tubes. Axial drop impact tests were employed to exert drop impact loading on cross-sections of the specimens with a square drop weight. The results showed that the X-direction filled tube (X-DFT) had a higher crushing strength and yield strength than that of the Y-direction filled tube (Y-DFT). As the tubular cross-section edge number of the filled tube increased, the specific energy absorption (SEA) and specific total efficiency (STE) decreased. Under the same axial drop impact loading conditions, the SEA and STE of the X-DFT were superior to those of the Y-DFT. As the edge number of the tubular cross-section or the tubular length ratio increased, the SEA and STE of the filled honeycomb tube decreased significantly. While the impact energy increased, the SEA and STE of the filled tubes increased approximately linearly. This work investigated the influence of drop-impact and structural parameters on deformation characteristics and energy absorption. It is expected to provide supplementary documentation for the advancement of cushion protection technology and the optimization of product structure.
这项工作提出了一种针对多组分非金属材料的方法，即填充聚乙烯（PE）泡沫的规则多边形纸蜂窝夹芯管，并着重研究了跌落冲击参数和结构参数对填充管变形特性和能量吸收的影响。采用轴向跌落冲击试验，用方形落锤对试样横截面施加跌落冲击载荷。结果表明，X方向填充管（X-DFT）的抗压强度和屈服强度高于Y方向填充管（Y-DFT）。随着填充管管状横截面边数的增加，比能量吸收（SEA）和比总效率（STE）降低。在相同的轴向跌落冲击载荷条件下，X-DFT的SEA和STE优于Y-DFT。随着管状横截面边数或管长比的增加，填充蜂窝管的SEA和STE显著降低。当冲击能量增加时，填充管的SEA和STE近似线性增加。这项工作研究了跌落冲击和结构参数对变形特性和能量吸收的影响。预计可为缓冲保护技术的进步和产品结构的优化提供补充资料。
