摘要
陶瓷是具有轻质高强特性的常用抗弹材料,但其本身的脆性特点使得陶瓷利用率较低,局部的击穿往往导致整块陶瓷破碎。为了提高陶瓷的利用率,提出了一种分层梯度陶瓷球金属复合结构,并通过数值模拟研究了陶瓷球尺寸及着弹点的影响。从子弹和靶板的变形、弹速变化和塑性波传播等角度分析了陶瓷球金属复合结构的抗弹机理,并对结构进行了梯度优化设计。研究结果表明,直径为7.2 mm的陶瓷球结构的综合抗弹性能良好,在此基础上设计的梯度陶瓷球结构能进一步提升抗弹性。陶瓷球金属复合靶板呈局部破坏,靶板其他位置仍具有抗打击能力。
Ceramics is commonly used as ballistic resistant material due to lightweight and high strength properties. However, due to its brittleness, the use efficiency of ceramics is low, and local breakdown oftenleads to the breakage of the whole ceramic. In order to improve the use efficiency of ceramics, a compositestructure of layered gradient ceramic ball and aluminum was presented in this study, and the influences ofceramic ball size and hitting position were studied with numerical simulation method. The anti-ballisticmechanism of ceramic ball-metal composite structures was analyzed from the deformation of bullet andtarget plate, the change of bullet velocity and the plastic wave propagation, and then the optimization designof anti-ballistic structure was proposed. The results show that the ceramic ball with a diameter of 7.2 mm hasan excellent property of anti-ballistic capability. The layered gradient ceramic ball structure designed canfurther improve the anti-ballistic capability. The ceramic ball-metal composite target plate is damagedlocally, and the other parts of the target still have the anti-ballistic capability.
作者
陈铭
张永亮
郑航
赵凯
郑志军
CHEN Ming;ZHANG Yongliang;ZHENG Hang;ZHAO Kai;ZHENG Zhijun(CAS Key Laboratory of Mechanical Behavior and Design of Materials,Department of Modern Mechanics,University of Science and Technology of China,Hefei 230026,Anhui,China)
出处
《高压物理学报》
CAS
CSCD
北大核心
2021年第5期62-71,共10页
Chinese Journal of High Pressure Physics
基金
中央高校基本科研业务费专项资金(WK2090000019)。
关键词
弹体侵彻
优化设计
梯度陶瓷球结构
projectile penetration
optimization design
gradient ceramic ball structure
作者简介
陈铭(1996-),男,硕士研究生,主要从事陶瓷装甲防护研究.E-mail:chenm182@mail.ustc.edu.cn;通信作者:张永亮(1987-),男,博士,副研究员,主要从事冲击动力学研究.E-mail:ylz2018@ustc.edu.cn;通信作者:郑志军(1979-),男,博士,副教授,主要从事冲击动力学研究.E-mail:zjzheng@ustc.edu.cn。
