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http://dx.doi.org/10.6108/KSPE.2016.20.2.067

Study of Separation Mechanism According to the Constraint Condition of Explosive Bolts  

Jeong, Donghee (Energetic Material & Pyrotechnics Department, Hanwha Corporation R&D Institute)
Lee, Youngwoo (Daejeon Center, Defense Agency for Technology and Quality)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.20, no.2, 2016 , pp. 67-74 More about this Journal
Abstract
Explosive bolt is one of separation device that uses high explosive charge, and is separated by pressure formed by an explosion and the resulting shock waves. Explosive bolt having such a mechanism would have to be designed to minimize shock and debris formation generated during separation. In this study, separation tests were carried out with distance as variable for restraining the explosive bolt (Air Gap). Bolt release and its separating shape with variation of air gap is observed, and we used accelerometer to measure the shock wave transmitted through a bound object. In addition, separation behavior of explosive bolt is analyzed using ANSYS AUOTODYN program. By comparing the results of previously performed experiments and analysis, we could confirm the effects of air gap to the release behavior of explosive bolt, and decide optimum constraining environment for specific separation bolts.
Keywords
Explosive Bolt; Pyro Device; AUTODYN Program;
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