高压气体对靶板穿孔及其碎片云运动和致损效应影响研究  

Influences of high pressure gas on target perforation and its debris cloud motion and damage effect

作　　者：才源[1] 庞宝君[1] 迟润强[1] 段永攀 贾斌[1] 盖芳芳 CAI Yuan;PANG Baojun;CHI Runqiang;DUAN Yongpan;JIA Bin;GAI Fangfang(Hypervelocity Impact Research Center,HIT Aerospace Laboratory,Harbin Institute of Technology,Harbin 150080,China;College of Sciences,Heilongjiang University of Science and Technology,Harbin 150022,China)

机构地区：[1]哈尔滨工业大学航天学院高速撞击研究中心,哈尔滨150080 [2]黑龙江科技大学理学院,哈尔滨150022

出　　处：《振动与冲击》2019年第19期31-37,共7页Journal of Vibration and Shock

基　　金：国家自然科学基金面上项目(11772113);国家自然科学基金面上项目(11672097)

摘　　要：应用二级轻气炮发射球形铝合金弹丸撞击充气压力容器模拟装置,研究高压气体对靶板穿孔及其碎片云运动和致损效应的影响。根据试验结果建立了气体压力作为自变量之一的靶板穿孔经验公式。通过X光对高压气体中的碎片云分析发现,气体压力影响碎片云的形态和速度:气体压力增加,对碎片云扩展的阻碍作用增强;气体对碎片云具有减速作用,随着气体压力的增加碎片云减速加快。通过分析被碎片云撞击的观察板,获得了碎片云致损能力与气体压力、弹丸速度和弹丸直径的关系:随着气体压力的增加,碎片云的致损能力降低;在弹丸直径一定的前提下,弹丸速度和气体压力对碎片云的致损能力的影响是相互耦合的;随着弹丸直径的增加碎片云的致损能力增强。A two-stage light gas gun was used to launch spherical aluminum alloy projectiles,and impacta gas-filled pressure vessel simulation deviceto investigate influences of high pressure gas on target perforation and its debris cloud motion and damage effect.According to the test results,the target perforation’sempirical formula was established taking gas pressure as one of independent variables.X-ray photography was used to record debris cloud information in high pressure gas.The results showed that gas pressure affects debris cloud’s morphology and velocity,the larger the gas pressure,the smaller the expansion of debris cloud;gas slows down debris cloud,and its slowing down speeds up with increase in gas pressure.Through analyzing the observation plate impacted by debris cloud,it was shown that with increase in gas pressure,debris cloud’s damage ability drops;when projectile diameter keeps constant,effects of projectile velocity and gas pressure on debris cloud’s damage ability are mutually coupled;debris cloud’s damage ability increases with increase in projectile diameter.

关 键 词：超高速撞击 压力容器 穿孔 碎片云 X光拍摄 

分 类 号：V423.42[航空宇航科学与技术—飞行器设计] O347[理学—固体力学]