连续射击过程中加速运动弹丸激励下身管横向振动特性研究  

Transverse vibration characteristics of barrels subjected to accelerated moving projectiles during the artillery continuous firing

作　　者：周奇郑[1] 赵洋[1] 王德石[1] ZHOU Qizheng;ZHAO Yang;WANG Deshi(Department of Weaponry Engineering, Naval University of Engineering, Wuhan 430033, China)

机构地区：[1]海军工程大学兵器工程系,武汉430033

出　　处：《振动与冲击》2018年第6期99-103,共5页Journal of Vibration and Shock

基　　金：国家自然科学基金(11372350);国家自然科学基金青年科学基金(11602300)

摘　　要：为研究火炮连续射击过程中炮口振动特性,建立了弹丸膛内加速运动作用下身管横向振动方程;采用小参数法,导出了单发弹丸激励下身管振动方程的近似解;通过迭代求解得到了连续射击过程中身管振动方程的近似解。针对弹丸有、无质偏两种情形,结合试验测得的弹丸加速度,研究了身管阻尼系数、发射间隔对炮口振动特性的影响。研究表明:身管阻尼系数影响炮口弹丸冲击响应的衰减速度;无间隔连续射击下炮口的振动幅度单调增长,射击精度呈下降趋势;针对特定口径身管,当发射间隔大于一定值后,连续射击下炮口振动与单发射击相同。研究结果可为确定火炮射击速度与提高火炮射击精度提供理论指导。In order to investigate the vibration characteristics of barrels during the artillery continuous firing,the transverse vibration equation of a barrel under the acceleration impact of projectile was established.The series analytical solution of the barrel under the impact of single projectile was given by employing the small parameter method.Then the solution of the artillery continuous firing was derived by iterative method.For the projectiles with and without mass-unbalance,considering the acceleration of the projectile tested,the vibration characteristics of the barrel were analyzed with different launching intervals.The results show that the decay rate of the impact response is affected by the damping coefficient of the barrel.The muzzle vibration amplitude without launching intervals is larger,and the shooting accuracy is decreased.For a given barrel,the muzzle vibration amplitude under continuous firing is the same as the single firing’s when the launching interval is large enough.The results are available for determining the firing speed and improving the shooting accuracy.

关 键 词：身管 弹丸 连续冲击 加速运动 小参数法 

分 类 号：TJ303.9[兵器科学与技术—火炮、自动武器与弹药工程]