摘要
为了研究弹丸卡膛参数对弹丸膛内运动初始条件的影响,对中大口径火炮弹丸卡膛过程进行分析。利用显式动力学有限元数值模拟方法对新型155 mm火炮弹带惯性卡膛过程进行了分析研究,综合考虑不同的卡膛速度、摩擦系数、身管仰角、初始卡膛姿态角、弹炮间隙对卡膛深度、卡膛力以及卡膛姿态的影响,得到了各个因素对卡膛结果的影响规律,其中卡膛速度、摩擦系数对卡膛深度和卡膛力有较大影响,而身管仰角和初始卡膛姿态角对卡膛姿态起到了较大的作用,弹炮间隙则对3个卡膛结果都有明显的影响,这些结论为弹药装填机的设计和揭示弹丸膛内运动规律提供参数依据。
The process of projectile band bayonet-chamber of a new type 155mm howitzer is analyzed to investigate the effect of band bayonet-process parameters on the initial conditions of motion of projectile in bore, and the effects of changes in various parameters of band bayonet-process are presented, such as projectile velocity, frictional coefficient, quadrant angle, initial deflection and barrel-projectile gap. The results are obtained based on the dynamic explicit finite element method. Thus, the factors that influence the bayonet-chamber depth, band-barrel reaction force and bayonet-chamber posture are shown. Among them, the projectile velocity and frictional coefficient have significant influence on the bayonet-chamber depth and the band-barrel reaction force, the quadrant angle and initial deflection have major impact on the bayonet-chamber posture, meanwhile, the barrel-projectile gap playes an important role in all the three results. The results provide a parameter basis to the ammunition rammer design and the motion law of projectile in bore.
出处
《兵工学报》
EI
CAS
CSCD
北大核心
2014年第8期1152-1157,共6页
Acta Armamentarii
基金
国家自然科学基金项目(51205207)
关键词
兵器科学与技术
卡膛
有限元方法
卡膛结果
ordnance science and technology
bayonet-chamber
finite element method
result of bandbayonet-chamber process
