基座运动情况下弹炮系统的振动分析

Vibration analysis of a gun-projectile system under barbette motion

建立了基座运动情况下弹炮系统的动力学方程和可以分别应用摄动法和数值法对方程求解的理论体系。讨论了炮弹出口速度、炮管仰角、基座加速度和炮管转动速度对炮管末端挠度的影响。算例结果表明,摄动法和数值法所得结果吻合得非常好,说明所建立的理论是可信的;炮弹出口速度、炮管仰角、基座横向加速度和炮管转动速度是影响炮管末端挠度的主要因素,并由此提出了一个基座运动情况下炮管末端挠度与这些主要因素间关系的解析表达式。

The dynamic equations of a gun-projectile system and the corresponding two kinds of solving methods which were perturbation method and numerical method were established,respectively.The effects of the ultimate velocity of the projectile,the elevation of the gun,the acceleration of the barbette and the rotation velocity of the gun on the deflection at the end of the gun were studied.The numerical results of the two methods tallied extremely well with each other,it indicated that the theory established is reliable.Further study indicated that the main factors which influence the deflection at the end of the gun are the ultimate velocity of the projectile,the elevation of the gun,the transverse acceleration of the barbette and the rotation velocity of the gun and at last a formulation of the deflection at the end of the gun versus the above factors under barbette motion was put forward.