摘要
为研究Ti/Al_3Ti层状复合材料靶板在不同撞击时刻的损伤情况及失效形式,通过SPH-FEM模拟钨合金弹侵彻Ti/Al_3Ti层状复合材料靶板的过程,探讨其防护性能。模拟结果表明:在高速冲击载荷作用下靶板产生花瓣形开裂,伴随有不同程度的剥离;Al_3Ti层中出现径向沟槽状损伤裂纹,并出现部分脱落现象。Ti/Al_3Ti特殊的叠层结构使层间裂纹不断改变其扩展方向,发生裂纹偏转,增加裂纹扩展路径,使材料吸收更多的冲击能量,从而具有良好的装甲防护性能。
In order to further understand the failure mechanism,SPH-FEM method was used to simulate the process of tungsten alloy projectile impacting Ti/Al3Ti layered composite target. Damage and failure modes of Ti/Al3Ti target at different time were studied in this process. The protective performance of Ti/Al3Ti was discussed. The results indicate that a petal-shaped crack is produced on target,accompanied by peeling to varying degrees. The radial groove-like damage appears in Al3Ti layer,accompanied by shedding phenomenon. The special layered structures of Ti/Al3Ti composite target enable the direction of crack propagation change continuously,which results in the deflection of the cracks and the increase of crack propagation paths.Therefore,Ti/Al3Ti composite target absorbs more impact energy and exhibits superior ballistic performance.
作者
韩肖肖
张学义
周培俊
果春焕
曹阳
姜风春
HAN Xiaoxiao ZHANG Xueyi ZHOU Peijun GUO Chunhuan CAO Yang JIANG Fengchun(College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, China College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001 ,China College of Mechanical and Electrical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China)
出处
《兵器材料科学与工程》
CAS
CSCD
北大核心
2017年第1期66-72,共7页
Ordnance Material Science and Engineering
基金
国家自然科学基金(11402060)
国防基础科研项目(B2420133004)
