摘要
为得到撞击器前驱波冲击起爆靶板屏蔽炸药的相关规律,以撞击器前驱波起爆屏蔽炸药为研究内容,结合Held起爆准则与冲击波作用理论,通过作用面积增大的假设,构建前驱波冲击起爆靶板屏蔽炸药的数学模型,并利用相应材料参数对模型进行数值计算和分析,结果显示在小直径撞击器和短脉冲压力作用下,屏蔽炸药的起爆阈值随撞击器直径的增大而减小,随靶板厚度的增加而增大,且起爆阈值受撞击器直径的影响随靶板厚度的增加而增加,反之则相反,且对于速度在1000～2000 m/s常规破破片,只有直径达到10 mm左右时方可起爆较薄靶板屏蔽的炸药,这为弹药毁伤能力和安全水平的提高、反导拦截的设计及相关试验提供了理论指导.
To get the explosion rule of shielded explosive detonated by impactor shock wave,the Held initiation criterion,shock wave theory and the hypothesis of augmentation area were applied to establish the corresponding model.For the rule of shielded explosive detonated by impactor shock wave,material characteristics were used in the model calculation and analysis.Obtained results show that the shock threshold of shielded explosive became smaller with impactor diameter decreasing and became bigger with the increasing of target board thickness.Influence of impactor diameter for the shock threshold of shielded explosive became bigger with target board thickness increasing,while the opposite on the other way around.For conventional fragments,the velocity between 1000 m/s and 2000 m/s,the shielded explosive by thin target board would be detonated only if the diameter reached 10 mm.The study will help to improve the damaging ability and safety level of ammunition,missile interception and correlative experimentation.
出处
《爆破》
CSCD
北大核心
2013年第4期125-128,151,共5页
Blasting
关键词
撞击器
冲击波
冲击起爆
屏蔽炸药
impactor
shock wave
shock initiation
shielded explosive
