Influence of prestress on ballistic performance of bi-layer ceramic composite armors: Experiments and simulations

被引：30

作者：

Zhang, Rui ^{[1
,2
]}

Han, Bin ^{[3
,4
]}

Li, Lang ^{[1
,2
]}

Zhao, Zhong-Nan ^{[1
,2
]}

Zhang, Qi ^{[3
]}

Zhang, Qian-Cheng ^{[1
]}

Ni, Chang-Ye ^{[2
,5
]}

Lu, Tian Jian ^{[2
,5
]}

机构：

[1] Xi An Jiao Tong Univ, State Key Lab Strength & Vibrat Mech Struct, Xian 710049, Shaanxi, Peoples R China

[2] Nanjing Univ Aeronaut & Astronaut, State Key Lab Mech & Control Mech Struct, Nanjing 210016, Jiangsu, Peoples R China

[3] Xi An Jiao Tong Univ, Sch Mech Engn, Xian 710049, Shaanxi, Peoples R China

[4] Xi An Jiao Tong Univ, Res Inst, Hangzhou 311215, Zhejiang, Peoples R China

[5] Nanjing Univ Aeronaut & Astronaut, Nanjing Ctr Multifunct Lightweight Mat & Struct M, Nanjing 210016, Jiangsu, Peoples R China

来源：

COMPOSITE STRUCTURES | 2019年 / 227卷

基金：

中国博士后科学基金; 国家重点研发计划; 中国国家自然科学基金;

关键词：

Ceramic armor; Pre-stress; Ballistic performance; Penetration; Experiment; INTERFACE DEFEAT; PENETRATION; TRANSITION; IMPACT; FAILURE; METAL; MODEL;

D O I：

10.1016/j.compstruct.2019.111258

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The effect of prestress on the ballistic performance of bi-layer ceramic composite armors was explored both experimentally and numerically. Three types of target plate with different prestress levels were prepared using the method of shrink-fit, and tested with ballistic experiments. Residual velocity and length of the projectile were recorded and failure mode of each target was examined. A numerical technique was also proposed to explore the penetration process of projectile and the enhancement mechanism of prestress, with the effectiveness of simulation results validated by experimental measurements. Prestressing the ceramic led to more kinetic energy dissipated by plastic deformation and erosion of the projectile, causing more than 25% increase in ballistic limit. The effects of key geometrical parameters - thickness and diameter of ceramic file - on ballistic limit were systematically explored, and a critical file thickness for the influence of prestressing on ballistic performance was identified.

引用

页数：10

共 31 条

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