学术论文

      典型回转闭锁自动机开锁过程动强度数值分析

      Numerical Analysis of Dynamic Strength of Turning Block Automatic Mechanism at Unlocking Time

      摘要:
      在设计自动武器时,往往重视闭锁时期零部件的强度而忽视开锁阶段惯性力和碰撞力引起的动强度.针对某枪械回转闭锁机构关键部件在开锁过程中相关零件断裂问题,采用数值分析的方法,建立了枪机、枪机框、开闭锁导柱、击针等零部件开锁过程的惯性应力和撞击应力计算模型.基于仿真结果分析了自动机零部件强度薄弱处的等效动应力情况,为该自动机部件结构的改进提供了理论依据以及数据支撑,也为类似自动机动强度研究提供了分析方法.
      Abstract:
      Turning block automatic mechanism spare parts are important parts of turning block automatic weapon,and they require a high safety factor.During the design of an automatic weapon,more importance has been attached to the strength of the spare parts at locking time,but the dynamic strength problems caused by inertia force and impact force during unlocking time often were ignored.Aimed at the problem that a firearm turning block mechanism's key component fractured at the locking time,a computational model is built by using numerical analysis method to compute inertia force and impact force of action,action frame,lock and unlock column,firing pin during locking time.Based on simulation results,the equivalent dynamic stress of the weak parts of automatic mechanism spare parts has been obtained.The results of the simulation can provide theoretical basis and data support for the improvement of the automatic mechanism spare parts' structure.
      Author: MOU Aomin XU Cheng TANG Liujian YANG Yuzhao
      作者单位: 南京理工大学 机械工程学院,南京,210094
      刊 名: 兵器装备工程学报 ISTIC
      年,卷(期): 2017, 38(9)
      分类号: TJ23
      在线出版日期: 2018年1月3日
      基金项目: 企业合作项目