基于ABAQUS的某火炮击发机构碰撞仿真分析

Collision Simulation Analysis of Certain Cannon Firing Mechanism Based on ABAQUS

针对击发机构中击针存在的不足,从碰撞力学的角度对某火炮击发机构进行碰撞分析计算。对击锤与击针的碰撞及撞击力进行分析,利用有限元分析软件ABAQUS对某火炮击发机构建立有限元模型,进行有限元仿真计算,得到了击锤与击针的应力、速度、位移等参数。依据仿真结果分析可知,构件相撞时细长杆更容易发生疲劳断裂,应着重对击针的危险断面进行分析,提出改进措施。该研究对提高击针寿命有一定的意义。

For the shortcoming of the firing pin in the firing mechanism, the collision of certain cannon fire mechanism is analyzed and calculated in this paper from the angle of the collision mechanics. The collision and impact force of the firing pin are analyzed. The finite element model of the cannon firing mechanism is built with the ABAQUS （the finite element analysis software）, and then its finite element simulation is calculated. The calculated data include some parameters, such as stress, velocity and displacement of the hammer and the firing pin. According to the analysis of the simulation, the paper concludes that during the components＇ collision the slender rod is more prone to fatigue fracture. Then, focuses on the analysis of the dangerous section of the firing pin and put forwards some improving measures, which are of great significance to prolonging the serving life of the firing pin.