低附带毁伤弹药的炸药/钨粉质量比对钨粉抛撒特性的影响

Effect of Explosive/Tungsten Powder Mass Ratio for LCD Ammunition on Dispersal Characteristics of Tungsten Powder

为研究低附带毁伤弹药的炸药/钨粉质量比对钨粉抛撒速度的影响,根据爆炸力学相关理论,建立了描述炸药/钨粉质量比与钨粉抛撒初速理论关系的模型。为分析钨粉的轴向速度,用AUTODYN-3D软件对炸药/钨粉质量比为0.0335-0.3636的7种方案进行了数值仿真,分析、对比了不同方案的钨粉轴向抛撒速度。为了验证钨粉抛撒初速与质量比的理论模型以及不同炸药/钨粉质量比的钨粉抛撒初速仿真结果,进行了炸药/钨粉质量比为0.0335、0.0875、0.2113的3发低附带模拟弹试验。结果表明,钨粉的抛撒初速与炸药/钨粉质量比呈非线性递增关系,增大炸药/钨粉质量比可有效地增大钨粉的速度,但炸药/钨粉质量比大于0.1734后,对钨粉的速度的提高作用就开始减小。钨粉抛撒初速的数值仿真结果和理论计算结果与相同质量比下的试验结果较吻合。

To study the effect of explosive/tungsten powder mass ratio on dispersal velocity of tungsten powder for low collateral damage（LCD）ammunition,a model describing the theoretical relation of initial dispersal velocity of tungsten powder and explosive/tungsten powder mass ratio was established based on the related theory of explosion mechanics.To analyze the axial velocity of tungsten powder,seven plans of explosive/tungsten powder mass ratio from0.0335 to 0.3636 were numerically simulated by ATUODYN-3D software.The axial dispersal velocity of tungsten powder under different plans was analyzed and compared.To verify the theoretical model of initial dispersal velocity of tungsten powder and mass ratio and simulation results of initial dispersal velocity of tungsten powder with different explosive/tungsten powder mass ratio,the experiments of three LCD simulated projectile with mass ratio as 0.0335,0.0875 and 0.2113 were performed.Results show that the relationship of initial dispersal velocity of tungsten powder and explosive/tungsten powder mass ratio is nonlinear increasing.Increasing the explosive/tungsten powder mass ratio can effectively increase the velocity of tungsten powder,but when the explosive/tungsten powder mass ratio is greater than0.1734,the promotion effect on the velocity of tungsten powder will began to decrease.The simulated results and the theoretical calculation results of initial dispersal velocity of tungsten powder are in better agreement with the experimental ones under same mass ratio.