基于ADAMS的某型冲锋枪自动机动力学仿真和分析

Dynamic Simulation and Analysis of a Type of Submachine Gun Automaton based on ADAMS

摘要:

为研究某型冲锋枪自动机运动规律和动力学特性,进而探究导气孔大小对自动机运动循环的影响,首先使用UG软件建立该枪自动机的三维实体模型,其次在ADAMS软件中建立虚拟样机,利用MATLAB软件对内弹道和导气室压力曲线进行拟合,对该枪的单发射击进行仿真,得到了枪机和枪机框的位移速度曲线、复进簧压力曲线等动力学特性,对比仿真结果与试验数据,说明虚拟样机模型具有较高的可行性,最后仿真分析导气孔大小对自动机运动循环的影响,仿真结果表明,随着导气孔直径增大,后坐速度和后坐撞击变大,复进到位速度明显提高,复进时间显著降低,自动循环时间相对缩减,为产品优化设计提供理论参考。

Abstract:

In order to study the motion law and dynamic characteristics of a certain type of submachine gun automaton, and further explore the influence of the size of air guide hole on the motion cycle of the automaton, the three-dimensional solid model of the gun automaton was first established using UG software, then the virtual prototype was built in ADAMS software, and the internal trajectory and air guide chamber pressure curve were fitted using MATLAB software. The single shot of the gun was simulated, and the dynamic characteristics of the gun and the gun frame, such as displacement velocity curve and compound spring pressure curve, were obtained. The simulation results were compared with the test data, indicating that the virtual prototype model has a high feasibility. Finally, the simulation analyzed the influence of the size of the pilot hole on the motion cycle of the automaton. The recoil speed and recoil impact are increased, the recoil speed is significantly increased, the recoil time is significantly reduced, and the automatic cycle time is relatively reduced, which provides a theoretical reference for product optimization design.