Experimental and numerical simulation study on the shaped charge jet impact of a fuze
FAN Yiqing1, WANG Jiong1, XIE Quanmin2, XI Zhanwen1
1.School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094,China；
2.Ordnance NCO Academy, Army Engineering University, Wuhan 430075，China
Abstract：To study the reactions of a fuze explosive train during shaped charge jet impact, a charge jet experiment on an impact insensitive charge fuze was designed and carried out.By observing the remainder of the insensitive explosive and the deformation of the witness board, the explosive train reaction rate was judged.Based on the experiment data, using the Autodyn-3D finite software, simulation models considering the effects of shock waves produced by the explosive train and acting on the witness board were established and used to calculate the pressure, the reaction rate and the deformation of the witness board.The impact reaction process of the fuze with projectile was further studied and the threshold of impact initiation of the insensitive charge fuze by shaped charge jet was also calculated using the up-down method.The results show that the fuze explosive train is detonated in the shaped charge jet impact test.According to the numerical simulation results, the responses of some simplified components are the same as that of the full fuze.They are all detonation reactions.The simplified scheme is proved to be feasible.The reaction level of the fuze with projectile is detonation under the impact of shaped charge jet.The threshold of impacting initiation of insensitive charge fuze is 46.08 mm3/μs2.
范一清1，王炅1，谢全民2，席占稳1. 聚能装药对引信的冲击试验与仿真研究[J]. 振动与冲击, 2020, 39(22): 261-267.
FAN Yiqing1, WANG Jiong1, XIE Quanmin2, XI Zhanwen1. Experimental and numerical simulation study on the shaped charge jet impact of a fuze. JOURNAL OF VIBRATION AND SHOCK, 2020, 39(22): 261-267.
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