弹丸高速挤进过程动态试验设计与分析  

Design and analysis of dynamic experiment for engraving process of high-speed projectile

作　　者：陈龙淼[1] 林贵[1] 李淼[1] 

机构地区：[1]南京理工大学机械工程学院,江苏南京210094

出　　处：《南京理工大学学报》2015年第2期139-143,共5页Journal of Nanjing University of Science and Technology

基　　金：国家自然科学基金(51205207)

摘　　要：该文设计一种可反复使用的动态模拟弹丸挤进过程的机电实验装置,用于模拟弹丸高速挤进膛线的塑性变形过程,通过仿真分析试验装置中撞击体碰撞和推杆推动弹丸挤进膛线的过程,获得了推杆和弹丸的运动状态以及挤进动力和挤进阻力随时间的变化曲线。仿真计算发现,挤进最大阻力值与常用的经验挤进阻力值相差小于10%,表明该动态试验装置能有效模拟弹丸动态的挤进过程,所采用的仿真分析模型和参数选取合理,能为深入研究挤进规律提供有效试验手段和仿真方法。A reusable electromechanical experimental device for the dynamic engraving process is designed to simulate the plastic deformation of the projectile engrave rifling with high speeds. The collision process of impactors and the engraving process of bands pushed by pushrod are simulated and analyzed. The motion state of the projectile and the pushrod and the curve of the engraving resistance versus time of bands are obtained. The results show that the difference between the maximum resistance value of calculation and the common resistance value of experience is less than 10%, the experimental device can achieve the function of the engraving experiment, and the simulation model and the parameters of the dynamic engraving process are reasonable. The research in this paper can provide the effective test method and the simulation methods for the future study of the engraving law.

关 键 词：挤进过程 有限元模拟 机械设计 

分 类 号：TJ410[兵器科学与技术—火炮、自动武器与弹药工程]