火炮发射与控制学报

为提高拦截概率，提高发射速率是高炮武器系统的重点发展方向之一，以期单位时间内发射较多的弹丸至目标区域。然而，高射速发射造成的热效应反过来又会影响火炮自动机中多体关键件的工作效率，最终影响火炮射击安全性。为提高高射速自动机射击速率和射击安全性，解决影响其关键件寿命的热效应问题，需对高射速自动炮自动机多体关键件瞬态传热及应力变化进行研究。以某转膛型高射速自动炮为研究对象，采用瞬态传热学理论，建立了自动机关键件传热模型，采用有限元分析软件ANSYS Workbench进行了多体瞬态传热及应力变化仿真研究，仿真结果表明：随着射击频次的增加，关键件形变、温度急剧增加，最终会引起多体部件运动干涉影响射击安全性。仿真结果能够为自动机的设计、使用和维护保养提供理论支撑。

In order to improve the probability of interception, increasing the firing rate is one of the key development directions of anti-aircraft artillery weapon systems so that more projectiles can be fired to the target area per unit time. However, the thermal effect caused by high rate-of-fire(ROF) firing in turn affects the efficiency of multi-body critical components in the action and ultimately affects firing safety. In order to improve the firing rate and shooting safety of high ROF auto-cannons and solve the problem of thermal effect affecting the life of its key parts, it is necessary to study the transient heat transfer and stress change of multi-body key parts of high ROF auto-cannon actions. Taking a rotating-chamber high ROF auto-cannon as the research object and using the transient heat transfer theory, the heat transfer model of key parts of the automaton was established, and the simulation study of multi-body transient heat transfer and stress change was carried out by using finite element analysis software ANSYS Workbench. The simulation results show that with the increase of firing frequency, the defor-mation and temperature of key parts increase sharply, which will eventually cause multi-body component motion interference that affects shooting safety. The simulation results can provide theoretical support for the design, operation and maintenance of actions.