摘要
研究泡沫铝"三明治"结构应用于大冲击能量吸能装置的设计,给出了泡沫铝材料用于吸能装置的设计方法与步骤,设计出可吸收2.232 MJ能量的新型斜井跑车防护装置.利用LS/DYNA进行该装置的碰撞仿真分析,发现泡沫铝在高速冲击中逐层压溃,具有很好的缓冲吸能效果;在冲击过程中,瞬时吸能速率随着泡沫铝变形的加剧和结构强度的提高而增大,冲击中泡沫铝"三明治"结构出现粘结失效.
Sandwich structure with aluminum foam core was applied in large-shock-energy absorption device and its design method and steps were presented. A new protecting device of free-sliding in skew mine which could absorb 2. 232 MJ energy was developed. Crashing simulation analysis on this device by LS/DYNA found that aluminum foam was steamed roller layer by layer and had good performance in absorbing energy. During the shock process, instant energy-absorption velocity would increase with the aggravation of aluminum foam core deformation and the enhancement of structure strength, and the conglutination of sandwich structure was broken.
出处
《工程设计学报》
CSCD
北大核心
2009年第3期191-195,共5页
Chinese Journal of Engineering Design
基金
国家自然科学基金资助项目(50875263)
关键词
斜井跑车
泡沫铝
吸能装置
LS/DYNA
free-sliding in skew mine
aluminum foam
energy-absorption device
LS/DYNA
