球形弹丸超高速正撞击Whipple防护结构损伤分析  

Damage of 5A06 Whipple Shield Caused by Hypervelocity Impact of Al 2017 Sphere

作　　者：林木森[1] 庞宝君[1] 龚海鹏[1] 张伟[1] 

机构地区：[1]哈尔滨工业大学空间碎片高速撞击研究中心,哈尔滨150001

出　　处：《宇航学报》2009年第4期1686-1692,共7页Journal of Astronautics

基　　金：空间碎片专项基金项目(KJSP2005-0201)

摘　　要：为了掌握航天器防护结构受空间碎片高速撞击的防护性能及其损伤破坏模式,采用二级轻气炮结合高速X光照相系统,对球形弹丸超高速正撞击5A06铝合金Whipple防护结构进行了试验研究。根据试验结果分析了铝合金Whipple防护结构的防护屏和舱壁在弹丸撞击速度为2.0～5.2km/s、弹丸直径为4mm和6.35mm及防护屏厚度为0.5mm、1.5mm、2mm和3mm区间的损伤模式,总结了防护屏穿孔和舱壁损伤随弹丸撞击速度、弹丸直径以及防护屏厚度变化的规律。根据高速X光照片分析了碎片云速度和形态的变化趋势,进而从碎片云角度对舱壁损伤模式进行了分析。In order to get the damage mode and resist character of spacecraft shield structure by the high-velocity impact of space debris, a two-stage light gas gun with X ray high velocity photography system was used to launch AI 2017 sphere projectiles impacting on 5A06 aluminum alloy Whipple shield. By analyzing damage mode in different impact velocity （2 -5.2 km/s） , projectile diameter （1.5 mm, 4 mm, 6.35 mm） and bumper thickness （0.5 mm, 1.5 mm, 2 mm and 3 mm） , the laws of penetration hole diameter of bumper and damage of bulkhead were obtained. Based on X photograph, the characteristics of debris clouds were analyzed in quantity, then the explanations for damage of bulkhead from the view of debris clouds were purposed.

关 键 词：爆炸力学 超高速撞击 损伤模式 WHIPPLE防护结构 5A06铝合金 

分 类 号：O381[理学—流体力学] V423.41[理学—力学]