Effect of short fibers on compressive mechanical properties and energy absorption properties of aluminum foam

被引：0

作者：

Guo Y. ^{[1
]}

Liu X. ^{[1
]}

Bai C. ^{[1
]}

He S. ^{[2
]}

Wang J. ^{[1
]}

机构：

[1] Aviation Key Laboratory of Science and Technology on Structures Impact Dynamics, China Aircraft Strength Research Institute, Xi'an

[2] Jiangsu Key Laboratory of Advanced Metallic Materials, School of Material Science and Engineering, Southeast University, Nanjing

来源：

Zhendong yu Chongji/Journal of Vibration and Shock | 2021年 / 40卷 / 02期

关键词：

Aluminum foam; Dynamic mechanical property; Energy absorption; Fiber reinforced; Strain rate effect;

D O I：

10.13465/j.cnki.jvs.2021.02.008

中图分类号：

学科分类号：

摘要：

In order to explore the mechanical properties and energy absorption characteristics of closed cell aluminum foam after adding short fibers, a kind of fiber reinforced aluminum foam was prepared by adding short carbon fibers into molted aluminum by the melt foaming method. The dynamic mechanical properties of the aluminum foam and fiber reinforced aluminum foam at quasi-static and medium strain rates(0.001-100 s-1) were tested at room temperature by means of the universal material testing machine and the high speed hydraulic servo material testing machine. The mechanical properties and energy absorption characteristics of the aluminum foam with different fiber length and fiber content were analyzed. The results show that there are three different forms of fibers in aluminum foam: penetrating mode, penetration mode and embedding mode. Adding 1 mm fibers into the aluminum foam test piece with an average pore size of 2 mm, most of the fibers show penetrating mode, and the overall performance of the aluminum foam decreases. Adding 3 mm fibers, most fibers show penetration and embedding mode, and the platform stress and energy absorption efficiency increase. With the fiber, the aluminum foam presents more obvious strain rate effect. © 2021, Editorial Office of Journal of Vibration and Shock. All right reserved.

引用

页码：57 / 62and102

共 16 条

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