高级检索+

静动爆火球分布特征研究

Research on Distribution Characteristics of Static and Dynamic Explosive Fireball

  • 摘要: 在实际作战过程中,弹药主要以动爆的形式对目标产生毁伤作用,因此,研究弹丸在运动状态下的火球分布特征对目标的毁伤效应分析更具有实际意义.利用高速摄像机采集静爆和同等条件下的模拟动爆火球爆炸过程视频,试验中弹药TNT当量为9.53 kg,装药的运动速度设置为335 m/s、 680 m/s、 930 m/s,利用图像处理获取火球轮廓、几何尺寸、质心迁移轨迹,并通过对比分析定量研究不同装药速度下火球分布表征参量之间的差别.结果表明,爆炸火球受装药运动速度的影响较为明显,主要体现为:静爆火球呈较规则的球体分布,而动爆火球受装药运动速度及弹丸攻角的影响,使得动爆火球向着弹丸运动速度的正方向迁移,呈现为椭球体分布状态;通过对静、动爆火球图像质心运动轨迹进行分析,得出可通过火球图像质心迁移状态来区分静爆和动爆.

     

    Abstract: In the actual combat process, the ammunition mainly damages the target in the form of dynamic explosion, so it is more practical to study the fireball distribution characteristics of the projectile in the moving state on the target damage effect. In this paper, a high-speed camera is used to capture the video of the explosion process of the static explosion and the simulated dynamic explosion fireball under the same conditions. In the test, the TNT equivalent of the ammunition is 9.53 kg, and the movement speed of the charge is set to 335 m/s, 680 m/s, 930 m/s. The images are passed process and obtain the fireball contour, geometric size, and center of mass migration trajectory, and conduct a comparative analysis to quantitatively study the difference between the fireball distribution characterization parameters under different charging speeds. The analysis results show that the explosive fireball is affected by the charging speed more obviously, which mainly reflects as follows: the static explosive fireball is distributed in a relatively regular sphere, while the dynamic explosive fireball is affected by the movement speed of the charge and the angle of attack of the projectile, therefore the dynamic explosive fireball migrates in the positive direction of the projectile speed, presenting an ellipsoidal distribution state; It is concluded that the transition state of the image centroid of the fireball can be used to distinguish the static and dynamic explosion, by analyzing the motion trajectory of the image centroid of the static and dynamic explosion fireball.

     

/

返回文章
返回