摘要
为研究TC4钛合金薄板在弹体以不同角度撞击下的抗冲击性能,利用轻气炮系统进行半球形弹高速正撞击TC4钛合金薄板的试验研究,得到了TC4钛合金的损伤模式和弹道极限速度。基于试验工况,利用Abaqus仿真软件进行仿真模型和材料参数的有效性验证,并进一步分析弹体撞击角度对TC4钛合金抗冲击性能的影响。研究结果表明:TC4钛合金薄板受半球形弹正撞击后,主要发生由拉剪和延性扩孔造成的花瓣形失效;TC4钛合金薄板存在一个最易穿透角,在这个倾角下,弹体最易穿透靶板;靶板的抗冲击性能与靶板的失效模式密切相关,TC4钛合金薄板在半球形弹以不同角度撞击下具有不同的失效模式。
In order to study the ballistic resistance of TC4 titanium alloy under different impact angle,the experimental study on the high velocity impact of hemi-spherical projectile on TC4 titanium alloy target plate by light gas gun was carry out. The ballictic limit and failure mode was obtained. Based on experimental conditions,simulation model and material parameters had been validating through ABAQUS and the influence of impact angle on the ballistic resistance of TC4 titanium alloy had been further analyzing. The research result indicate that the main failure mode of TC4 titanium alloy against hemi-spherical projectile is petal-shaped failure caused by tensile shear and ductile holing;There exists an easiest penetration angle under which the projectile can penetrate the TC4 titanium alloy target most easily;The impact resistance of the target plate is closely related to the failure mode which is different under varying impact angel.
作者
张铁纯
王陆军
胡昂
彭捷
安静丹
ZHANG TieChun;WANG LuJun;HU Ang;PENG Jie;AN JingDan(Aeronautical Engineering Institute,Civil Aviation University of China,Tianjin 300300,China)
出处
《机械强度》
CAS
CSCD
北大核心
2021年第3期546-553,共8页
Journal of Mechanical Strength
基金
中央高校基本科研业务费项目(3122017030)资助。
关键词
弹体
靶体
弹道极限
抗冲击性能
数值仿真
Projectile
Target
Ballistic limit
Impact resistance
Numerical simulation
