火炮反后坐装覃动力学耦合分析与优化

考虑火炮后坐过程中后坐部分与火炮其他部分的动力学耦合效应，推导出在反后坐装置作用下，火炮后坐运动基本方程组,建立了火炮反后坐装置动力学耦合模型。基于拉格朗日插值和四阶龙格-库塔法进行了数值求解。计算结果表明：由于火炮耦合运动的存在，后坐阻力规律与设计时后坐阻力规律相差较大，最大后坐阻カ小于设计时最大后坐阻力。基于动力学耦合模型和优化设计方法，以后坐过程中的最大后坐阻力最小为优化目标，节制杆各圆锥段直径为设计变量，火炮最大后坐长为约束条件，建立了后坐阻カ优化模型。优化算法采用遗传算法。优化结果表明：火炮后坐过程中后坐阻力曲线更加平缓，最大后坐阻力小于优化前的计算结果。

Dynamic Coupling Analysis and Optimization of Gun Recoil Mechanism

During the recoil period,there is the dynamic coupling effect between recoil part and other parts of gun system.The dynamic system equations for gun recoiling were derived with the consideration of this coupling effect and its dynamic coupling model was established.The numerical method was employed to solve the equations.The Lagrange quadric interpolation method was used to interpolate table data and the fourth-order Runge-Kutta method was used for numerical integration.The results indicate that the recoil resistance curve is apparently different from that of the design curve,the maximal recoil resistance force is less than that of the designed curve.Based on the dynamic model and optimization method,the optimized model of recoil resistance force was developed by defining,the diameters of taper segments of control rod as design parameters,the maximal resistance force during the whole period as optimal objective and the maximal displacement of piston rod relative to cylinder as the constraints.The multi-island genetic algorithm(GA) was employed as optimal strategy.The optimized results indicate that the recoil resistance curve is smooth and maximal recoil resistance force after optimization is less than that before optimization.