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为了研究火炮发射时的动态特性,利用气动原理设计了一种能够模拟炮膛合力冲击载荷的实验装置,描述了该装置的结构及其工作原理,运用热力学理论和牛顿运动定律建立了工作过程的数学模型,在此基础上,利用龙格-库塔方法求解常微分方程组,进行了数值模拟,得到了该装置工作过程中身管冲击载荷变化曲线及炮管运动状态曲线,并对设计参数对冲击载荷曲线变化的影响进行了分析。仿真结果表明,该装置从理论上可以较好地模拟火炮发射时的炮膛合力,满足设计要求,通过仿真计算可以对设计参数进行优化,以获得失真率较小的冲击载荷曲线,从而满足不同型号火炮射击模拟的仿真要求。
In order to study the dynamic characteristics of the artillery firing, an experimental device capable of simulating the combined impact load of the bore was designed by using the pneumatic principle. The structure of the device and its working principle were described. The thermodynamics theory and Newton’s law of motion were used to establish the mathematics Based on this, the Runge-Kutta method is used to solve the ordinary differential equations, and the numerical simulation is carried out. The change curve of barrel impact load and the barrel motion state curve during the operation of the device are obtained, and the influence of design parameters on impact The effect of load curve changes was analyzed. The simulation results show that the device can theoretically simulate the joint force of gun when firing, and meet the design requirements. Through the simulation calculation, the design parameters can be optimized to obtain the impact load curve with smaller distortion rate to meet different models Artillery firing simulation of simulation requirements.