泡沫铝原位填充薄壁管的力学及吸能性能  

Mechanics and Energy Absorption Properties of In-situ Aluminum Foam-filled Thin-walled Tubes

作　　者：冯晓琳 杨旭东[1] 安涛 FENG Xiaolin;YANG Xudong;AN Tao(Sino-European Institute of Aviation Engineering,Civil Aviation University of China,Tianjin 300300,China)

机构地区：[1]中国民航大学中欧航空工程师学院,天津300300

出　　处：《热加工工艺》2022年第16期49-53,共5页Hot Working Technology

基　　金：天津市科技计划项目(20YDTPJC01600);中国民航大学研究生科研创新资助项目(10502763)。

摘　　要：采用填加造孔剂法制备了泡沫铝原位填充薄壁管,通过准静态压缩和落锤冲击试验研究了不同管壁厚度的原位填充管的力学及吸能性能,探究了泡沫铝芯材与薄壁管之间的相互作用。结果表明,在准静态压缩试验中,壁厚1 mm的原位填充管具有更低的平台应力和吸能量,但比吸能值更高。从缓冲吸能方面考虑,壁厚1 mm的原位填充管具有更小的屈服应力和更长的应力平台。在落锤冲击试验中,泡沫铝的加入提高了薄壁管的承载能力,并使其变形过程更加稳定。The in-situ aluminum foam-filled thin-walled tubes were prepared by space-holder method. The mechanics and energy absorption properties of in-situ foam-filled tubes with different tube wall thicknesses were studied through quasi-static compression and drop hammer impact tests. The interaction between aluminum foam and thin-walled tubes was explored. The results show that in the quasi-static compression test, the in-situ foam-filled tube with the wall thickness of 1 mm has lower plateau stress and energy absorption, but has greater specific energy absorption. From the perspective of buffer energy absorption, the in-situ foam-filled tube with the wall thickness of 1 mm has a lower yield stress and longer stress plateau. In the drop hammer impact test, the addition of aluminum foam improves the load-bearing capacity of the thin-walled tube and makes the deformation process more stable.

关 键 词：原位填充管 落锤冲击 吸能性能 相互作用 

分 类 号：TG146.21[一般工业技术—材料科学与工程]