破片形状对复合靶抗侵彻性能影响的实验研究  

Experimental Study on Influence of Fragment Shape on the Anti-penetration Performance of Composite Plates

作　　者：周楠[1] 王金相[1] 谢君[1] 彭楚才[1] 

机构地区：[1]南京理工大学瞬态物理国家重点实验室,南京210094

出　　处：《弹道学报》2014年第2期95-99,共5页Journal of Ballistics

基　　金：国家自然科学基金项目(11272158);中国博士后科学基金项目(2011M500929)

摘　　要：采用系列弹道实验,研究了双层钢/铝爆炸复合靶在不同形状破片侵彻作用下的毁伤机理和抗侵彻性能。实验采用14.5mm滑膛枪发射直径6mm的钢质球形破片和边长4.2mm的钢质立方体破片。基于实验结果,分析了不同形状破片侵彻下靶板的毁伤机理和破坏模式,讨论了破片形状、动能及靶板厚度分布等因素对复合靶抗侵彻性能的影响。结果表明:在球形破片和立方体破片的侵彻作用下,钢面板发生剪切冲塞破坏,铝背板发生延性扩孔破坏;复合靶板抗立方体破片侵彻性能优于抗球形破片侵彻性能;在球形破片的侵彻作用下,当靶板厚度一定时,复合靶板的抗侵彻性能随钢面板与铝背板厚度比的增大而提高,对于立方体破片则相反。Ballistic experiment was adopted to analyze the damage mechanism and anti-penetration performance of two-layered explosively welded steel/aluminum plates impacted by spherical and cubical fragments.The 14.5mm slip chamber gun was used to launch the spherical steel fragment with 6mm diameter and cubical steel fragment with 4.2mm side length in the experiment.The in-fluences of fragment shape,kinetic energy and layer thickness distribution on the anti-penetration performance were investigated.The results show that under the penetration of spherical and cubical fragments,the damage mechanism of steel front plate is shearing and plugging,and that of aluminum rear plate is prolonging deformation,respectively.The anti-penetration performance of target penetrated by cubical fragment is better than that of spherical fragment.The anti-penetration performance of target penetrated by spherical fragment improves with the increase of the thickness ratio of steel front plate to aluminum rear plate under the constant thickness of target,however,the opposite condition for cubical fragment.

关 键 词：爆炸力学 爆炸复合靶 破片形状 抗侵彻性能 毁伤机理 

分 类 号：O385[理学—流体力学]