物理学报Issue(2)：024701-1-024701-10,10.DOI:10.7498/aps.63.024701
密度梯度薄板超高速撞击特性的实验研究
Experimental study on hypervelo city impact characteristics of density-grade thin-plate
摘要
Abstract
Hypervelocity impact (HVI) characteristics of Ti6Al4V/Ly12 Al/polyamide fibre density-grade thin-plate are inves-tigated experimentally in a velocity range of 4.0-6.5 km/s by using two-stage light gas gun. The perforation in target, damage to witness wall, and ballistic limit curve are obtained and compared with those in the case of aluminum thin-plate. The results show that the diameter of the perforation hole is larger than that of aluminum thin-plate, the crater size in witness plate is smaller, and the ballistic limit curve is 50% larger than the latter. The analysis of shock wave propagation and the calculation of energy dissipation property in the density-grade thin-plate show that higher peak shock pressure is produced in it, and it has longer pressure duration time. Thus, more dissipation energy is consumed than in the case of aluminum thin-plate. So the density-grade thin-plate has a very good performance in withstanding HVI, and is promising in engineering application, e.g. protecting spacecraft from HVI of micro-meteoroid and orbital debris.关键词
超高速撞击/密度梯度材料/弹道极限/空间碎片Key words
hypervelocity impact/density-grade material/ballistic limit/space debris引用本文复制引用
侯明强,龚自正,徐坤博,郑建东,曹燕,牛锦超..密度梯度薄板超高速撞击特性的实验研究[J].物理学报,2014,(2):024701-1-024701-10,10.基金项目
国家重点基础研究发展计划(批准号:2010CB731600)和国家国防科工局空间碎片专项研究计划(批准号：KJSP06209, K0202210)资助的课题.@@@@ Project supported by the National Basic Research Program of China (Grant No.2010CB731600) and the Specialized Research Program for the Protection against Space Debris of China (Grant Nos. KJSP06209, K0202210) （批准号:2010CB731600）
