装药结构参数对轴向预制破片抛掷速度的影响

Effect of Structural Parameters of Charge on the Driving Velocity of Axial Preformed Fragments

为研究柱形装药长径比与装药壳体厚度等结构参数对轴向预制破片抛掷速度的影响规律,以G urney公式的假设为基础,提出爆轰产物二维运动假设条件,推导并得到轴向预制破片抛掷速度与装药长径比和装药壳体厚度之间的关系式。模拟了柱形带壳装药结构对轴向驱动预制破片抛掷速度的影响,所得结果与文献值吻合。用数值模拟结果修正关系式,得到柱形带壳装药结构参数对轴向预制破片抛掷速度的影响规律,以及轴向预制破片抛掷速度沿径向的分布规律。

In order to investigate the influence rule of the structural parameters of charge, such as length/diameter ratio and the thickness of shell vs. the throwing velocity of axial preformed fragments, based on the Gurney formula hypothesis, the hypothetical condition Of two-dimensional motion of detonation products is proposed. The relationship between the driving velocity of axial preformed fragments and charge length/diameter ratio as well as the thickness of shell is derived and obtained. The influence of the charge structure parameters of axial preformed fragment ammunition on the throwing velocity of axial preformed fragments is simulated. The influence rule of the structural parameters of charge on the throwing velocity of axial preformed fragments, and the distribution rule of driving velocity of axial preformed fragments on radial direction is obtained by the derived relationship modified with simulated results.