铝网防护结构高速正撞击防护性能的实验研究

管公顺; 牛瑞涛; 毕强; 庞宝君

doi:10.11858/gywlxb.2013.04.011

铝网防护结构高速正撞击防护性能的实验研究

doi: 10.11858/gywlxb.2013.04.011

哈尔滨工业大学航天学院航天工程系，黑龙江哈尔滨 150080

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管公顺 E-mail:hitggsh@163.com

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出版历程
- 收稿日期: 2011-10-09
- 修回日期: 2012-01-20
- 发布日期: 2013-08-15

Experimental Investigation of Protection Performance about Aluminum Mesh Bumper by High-Velocity Normal Impact

Department of Astronautics Engineering, School of Astronautics, Harbin Institute of Technology, Harbin 150080, China

摘要

摘要: 利用二级轻气炮发射2017-T4铝球弹丸，高速正撞击5052铝网防护结构，模拟空间碎片对航天器防护结构的高速撞击作用，研究了铝网防护结构的高速撞击防护特性。在面密度相同的情况下，分析了影响铝网填充防护结构高速撞击防护性能的铝网尺寸效应及组合效应。实验撞击速度为2.90~4.95 km/s，弹丸直径分别为3.97和6.35 mm，撞击角为0。实验结果表明：厚度为0.5 mm的2A12铝板对高速撞击铝球的初次破碎能力优于相同面密度的5052铝网层，但作为填充介质，5052铝网层比2A12铝板具有更好的保护后板作用；在一定的丝径范围内，丝径越小，撞击防护效果越好；前网后板填充层比前板后网填充层具有更好的均匀破碎效果。
- 铝网 /
- 高速撞击 /
- 防护性能 /
- 空间碎片
Abstract: The high-velocity normal impacts of space debris on bumper of spacecrafts were studied through a two-stage light gas gun launching 2017-T4 aluminum spheres to impact on 5052 aluminum mesh shield structure. The resist capability of aluminum mesh shield against high-velocity impact was discussed. For the same areal density, the size effect and arrangement effect on the protection performance of the filled layer were analyzed. Impact velocities of Al-spheres were varied between 2.90 and 4.95 km/s in this study. The diameters of projectiles were 3.97 and 6.35 mm respectively. The impact angle was 0. The results indicated that the primary capability of the 2A12 aluminum plate comminuting projectile is better than that of 5052 aluminum mesh when the areal density is constant, but as the filled medium, the 5052 aluminum mesh layer provides better protection for the rear wall than 2A12 aluminum plate. In a certain wire diameter range, the 5052 aluminum mesh with smaller wire diameter has better protection performance. Al mesh-Al plate filled layer can break up the projectile to a more uniform size than Al plate-Al mesh filled layer.
- aluminum mesh /
- high velocity impact /
- protection performance /
- space debris

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