不平衡量对弹丸膛内稳定性影响的仿真分析  

Numerical Analysis of Influence of Unbalance Magnitude on the Stability of Projectile in Bore

作　　者：廖伟[1] 蒋建伟[1] 邱浩 王昕 彭嘉诚 LIAOWei;JIANG Jianwei;QIU Hao;WANG Xin;PENG Jiacheng(State Key Laboratory of Explosion Science and Technology,BIT,Beijing 100081,China)

机构地区：[1]北京理工大学爆炸科学与技术国家重点实验室,北京100081

出　　处：《弹箭与制导学报》2019年第6期160-163,170,共5页Journal of Projectiles,Rockets,Missiles and Guidance

摘　　要：弹丸的偏心质量对膛内运动稳定性有较大影响,为探究其具体作用机理,对偏心质量形成的静不平衡和力偶不平衡两种典型状态进行仿真研究,得到了弹丸横向过载、章动角和弹炮轴线距随行程的变化规律。研究结果表明:当弹丸处于静不平衡或力偶不平衡态时,横向过载、章动角和弹炮轴线距皆明显增加,炮口段尤为显著;横向过载、章动角能很好地反映弹丸在膛内的不稳定摆动,适用于表征弹丸在膛内的不稳定性。The eccentric mass of projectile has great influence on the stability of in-bore motion.In order to explore its specific mechanism,two typical states of static unbalance and couple unbalance are simulated.The variation laws of projectile lateral overload,nutation angle and axis distance with projectile trip are obtained.The results show that when the projectile is in static unbalance or couple unbalances state,the lateral overload,nutation angle and the axis distance of the projectile increase significantly,especially in the muzzle section.The lateral overload and nutation angle can well reflect the unstable swing of the projectile in the bore,and can be used to characterize the stability of the projectile in the bore.

关 键 词：膛内运动 不平衡量 弹丸稳定性 有限元法 

分 类 号：TJ302[兵器科学与技术—火炮、自动武器与弹药工程] TJ410