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该文应用R／W法分阶段建立了无壳弹枪自动机结构的动力学方程，利用R／W法中的碰撞处理普遍公式来建立自动机各阶段之间的碰撞方程，通过数值计算和结果分析，得出了自动机动力参数变化对武器三发点射工作性能的影响规律，为实物模型的研究提供了理论依据和数据参考。
In this paper, the kinetic equations of the structure of a shell-less projectile automatic machine are established by R / W method in stages. The collision equations of each stage of the automaton are established by using the general formula of collision processing in R / W method. The result shows that the influence of the change of auto motive force parameter on the working performance of the three-point firing of the weapon has obtained the theoretical basis and data reference for the study of the physical model.