炸药驱动预制破片轴向抛掷速度规律研究

Study on Rule of the Axial Speeds of Projection Fragments Drived by Explosive

为解决爆轰产物对轴向预制破片的作用压力从柱状装药中心沿径向逐渐降低,从而导致轴向预制破片抛掷速度沿径向逐渐变小的问题,研究了柱状装药长径比与装药壳体厚度等装药结构参数对轴向预制破片抛掷速度沿径向分布规律的影响,针对某种轴向前置预制破片战斗部,进行了破片轴向抛掷速度沿径向分布规律的试验。结果表明,装药长径比以及装药壳体等装药结构参数对轴向预制破片抛掷速度影响较大,通过装药尺寸、壳体厚度等参数匹配,可以调整轴向预制破片的抛掷速度。

In order to solve the problem of the decrease of the action pressure of projection fragments along radial direction from the center of column charge and the throwing velocity of axial projection fragments along radial direction caused by detonation products, the influence of structure parameters such as charge length/diameter ratio and the thickness of shell on the radial distribution rule of the axial speeds of projection fragments is studied. In regard to the warhead of a certain structure, the experiment to investigate the rule of the throwing velocity of axial projection fragments along radial direction is carried out. The results show that the length/diameter ratio and case of the charge have a greater effect on throwing velocity of projection fragment along axial direction. For a specified charge density, the throwing velocity of axial projection fragments can be adjusted by properly selecting the charge shape, size and restraint condition.