弹体结构的振动响应研究  

Vibration Response Study of the Projectile

作　　者：梁君 范宣华[2] LIANG Jun;FAN Xuanhua(School of Mechanical and Electrical Engineering,Mianyang Teachers'College,Mianyang,Sichuan 621000;Institute of Systems Engineering,China Academy of Engineering Physics,Mianyang,Sichuan 621999)

机构地区：[1]绵阳师范学院机电工程学院,四川绵阳621000 [2]中国工程物理研究院总体工程研究所,四川绵阳621999

出　　处：《绵阳师范学院学报》2024年第5期30-37,共8页Journal of Mianyang Teachers＇ College

基　　金：国家自然科学基金项目(11872089)。

摘　　要：研究了弹体在侵彻过程中发生早燃或早爆的可能原因,从结构动力学角度认识弹体装药响应放大的现象.根据实际弹体结构的典型特征,构建了反映模拟装药和壳体基本连接特征的构型结构;基于广义Hertz接触理论和集中质量法,建立了含间隙结构装药的碰撞振动模型;采用4阶Runge-Kutta方法进行数值求解,分析了不同刚度和阻尼的装药结构下系统的响应图、相位图以及庞加莱截面.结果表明:弹体在穿多层靶过程中,在相对较低的载荷作用下时常发生装药部件局部响应放大的现象,结构振动可能是一个重要因素,而且刚度和阻尼对振动特性有较大的影响.相关研究对于认识弹体穿靶过程中的提前非预期点火问题具有较强参考价值.To study the possible causes of premature ignition or detonation of the projectile during the penetra‐tion process and to recognize the response amplification phenomenon of the projectile from the point of view of struc‐tural dynamics.Based on the typical characteristics of the actual projectile structure,a configuration structure reflecting the basic connection characteristics of the simulated charge and shell is constructed.Based on the gener‐alised Hertz contact theory and the concentrated mass method,the collision vibration model of the charge with clear‐ance structure is established.The 4th order Runge-Kutta method is used for the theoretical solution.The response plotsandphase diagramsof the system are analysed for different stiffness and damping of the charge structure.The results show that the local response amplification of the projectile often occurs during the penetration through the multi-layer target at relatively low loads.The structural vibration may be an important factor.The stiffness and damping have a significant influence on the vibration characteristics.This study has a strong reference value for understanding the problem of early unintended ignition during projectile penetration.

关 键 词：构型结构 刚度 阻尼 非线性 振动特性 响应放大 

分 类 号：TJ01[兵器科学与技术—兵器发射理论与技术]