Study on penetration-induced initiation of energetic fragment

2017 3rd International Conference on Applied Materials and Manufacturing Technology

Qiao, Xiangxin^1 ; Xu, Heyang^1

Shenyang Ligong University, Shenyang

110159, China^1

关键词: AUTODYN;    Impact velocities;    Mass ratio;    PTFE/Al;    Research results;    Stress peaks;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/242/1/012035/pdf
DOI  :  10.1088/1757-899X/242/1/012035

来源: IOP

【 摘 要 】

In order to investigate penetration-induced initiation of energetic fragment penetrating target, PTFE/Al (mass ratio 73.5/26.5) pressed and sintered into a Φ8mm × 8mm cylinder. To form energetic fragment, the cylinder was put into a closed container made by 35CrMnSiA. The container is 12mm long, 2mm thick. Energetic fragments were launched by a 14.5mm ballistic gun with a series of velocities and the penetrate process was simulated by AUTODYN-3D. The results show that the stress peak of energetic material exceed the initiation threshold, and energetic material will deflagrate, when energetic fragments impact velocity more than 800 m/s. The research results can provide reference for designs of energetic warhead.