【摘要】 针对某型冲锋枪射击时的动态特性，分析相关零件运动的合理性。基于多刚体动力学理论，利用UG、ADAMS等软件建立冲锋枪的虚拟样机模型，对冲锋枪进行包括击发、推弹入膛、后坐、抽壳、抛壳等两连发射击过程的动力学仿真分析，得到关键零部件在整个运动过程中的位移和速度随时间变化曲线。将数值仿真结果与试验数据进行对比，结果表明：该模型是正确可行的，为进一步的样机校核及优化奠定了基础。更多还原

【Abstract】 According to the dynamic characteristics of a certain type of submachine gun during shooting, the ration ality of the movement of related parts is analyzed. Based on the theory of multi-rigid-body dynamics, the virtual prototype model of the submachine gun is established by using UG, ADAMS and other software, and the dynamic simulation analysis of the submachine gun is carried out, including the process of firing, pushing the cartridge into the chamber, recoil, extraction and ejection. The displacement and velocity curves of the key parts in the whole process of motion are obtained. The numerical simulation results are compared with the experimental data, and the results show that the model is correct and feasible,which lays a foundation for further prototype verification and optimization.更多还原