Journal of Emerging Trends in Engineering and Applied Sciences: Research Areas

Article Title: Method of Determining the Critical Impact Velocity of Energetic Devices
by Liang Wang; Xiaoqiang Yang; Haishan Yang and Baoguo Zhu; Yunfeng Wang

Abstract:
To analyze the safety of energetic devices under insult of impact, the method of determining the critical impact velocity of energetic devices was proposed. The method based on the formation mechanism of hot spot of energetic materials under insult of impact load, combined the hot spot micro structure model of energetic materials and deformation analysis of energetic devices, analyzed and calculated the impact deformation of energetic devices and the hot spot formation and development process of its inner charge. Finally, by determining whether there are high temperature hot spots inside the charge, we determined the critical impact velocity to achieve the purpose of the safety analysis of energetic devices under insult of impact. The tests that the Steven impact test on the black powder inside the detonation power unit of the emergency escape system and the impact test on the detonation power unit, was analyzed and calculated, and compared with the test results, verify the theoretical model and computational method are correct and effective.

Keywords: energetic devices; energetic materials; crash safety; critical condition; critical impact velocity

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