为研究立姿无依托抵肩射击最优的枪托结构对射击精度的影响，提出一种射击精度的仿真与实验对比分 析方案。在人枪系统动力学模型基础上，以枪托抵肩面倾斜角度、枪托刚度为设计优化变量，通过协同仿真获取膛 口跳角、内弹道随机散布对比曲线；将立靶散布R50 的仿真计算结果与试验结果作对比，结果基本一致，误差小于 15%。结果表明：采取6°软枪托时，射弹散布有明显的优化，该方案对优化人枪系统中枪械结构和人机工效设计具 有指导作用。
In order to study the influence of the optimal butt structure on the firing accuracy of shoulder firing without support in standing position, a comparative analysis scheme of simulation and experiment on the firing accuracy was proposed. Based on the dynamic model of the man-gun system, the muzzle jump angle and the random dispersion curve of the interior ballistics were obtained by collaborative simulation with the tilt angle of the butt shoulder surface and the stiffness of the butt as the design optimization variables. The simulation results of vertical target dispersion R50 are compared with the experimental results, and the results are basically consistent, the error is less than 15%. The results show that when the 6° soft butt is adopted, the projectile dispersion is obviously optimized, and the scheme has a guiding role in optimizing the gun structure and ergonomic design in the man-gun system.