轮式突击炮行进间射击炮口振动分析及稳定控制

为了研究不同因素对炮口振动的影响规律,建立了轮式突击炮行进间射击多体动力学模型,并与试验结果对比验证了合理性。路面谱采用谐波叠加法建模,在不同路面条件和火线高情况下进行了仿真计算,获得了两种因素对行进间射击炮口振动的影响规律。构建了垂向稳定器模型,进行了联合仿真,对比了有、无稳定器两种情况下的炮口振动。结果表明:炮口振动幅值随路面粗糙度增大而增大；火线高对炮口振动的影响是非线性的；垂向稳定器能有效控制炮口振动,相较于无稳定器情况,开炮前炮口最大高低角和高低角速度幅值分别降低了94.1%和97.4%,开炮后炮口最大高低角振动幅值降低了16.2%。该研究对轮式突击炮的总体设计起到了一定理论支撑,具有重要工程应用价值。

Muzzle vibration analysis and stability control of wheeled assault gun firing on the move

In order to investigate the impact laws of different factors on the muzzle vibration, a multi-body dynamic model of the wheeled assault gun firing on the move was established and verified with experimental results. A road-surface spectrum model was built by using the harmonic superposition method, and the model was calculated under different road conditions and fire line heights. The influence of these two factors on the muzzle vibration was obtained. The model of a vertical stabilizer was set up, and the co-simulation was carried out to compare the muzzle vibration with and without stabilizers. The research results show that:the muzzle vibration amplitude increases with the increase of road roughness; the influence of fire line heights on muzzle vibration is nonlinear; the vertical stabilizer can effectively control muzzle vibration. Compared to the situation without stabilizer, the maximum muzzle altitude angle and altitude angle velocity amplitudes before firing decrease by 94.1% and 97.4% respectively, and the altitude angle amplitude of the muzzle after firing decreases by 16.2%. This research has certain reference significance for the overall design and engineering application of the wheeled assault gun.