Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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Sympathetic Detonation Modeling of PBXN-109

PBXN-109가 장전된 155 mm 고폭탄의 순폭현상 해석

  • Kim, Bohoon (Department of Mechanical and Aerospace Engineering, Graduate School, Seoul National University) ;
  • Kim, Minsung (Department of Mechanical and Aerospace Engineering, Graduate School, Seoul National University) ;
  • Yang, Seungho (R&D Center, HANWHA Corporation) ;
  • Oh, Sean (R&D Center, HANWHA Corporation) ;
  • Kim, Jinseok (4th R&D Institute, Agency for Defense Development) ;
  • Choi, Sangkyung (4th R&D Institute, Agency for Defense Development) ;
  • Yoh, Jai-Ick (Department of Mechanical and Aerospace Engineering, Seoul National University)
  • Received : 2014.07.01
  • Accepted : 2014.09.07
  • Published : 2014.10.01
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Abstract

Sympathetic detonation (SD) of high explosives occurs when a detonating donor initiates neighboring acceptors. The present study focuses on the hydrodynamic simulation of one-on-one sympathetic detonation of 155 mm charge filled with PBXN-109. Both unbuffered and buffered SD configurations are performed while changing the distance between each charge, in order to investigate the detonation sensitivity to a donor initiation. The cause of a SD is by a shock impact for the unbuffered case at a close range, while at a distant range, blast fragment penetration is the primary cause. The buffers can reduce the incident sensitivity to a SD by reducing the strengths of shock wave and impinging fragments.

하나의 탄약이 폭발하였을 경우 에너지가 다른 탄약으로 전달되어 폭발을 야기해 최종적으로 연쇄적인 폭발에 이를 수 있다. 본 연구에서는 PBXN-109가 충전된 155 mm 고폭탄의 동조폭발에 대한 2차원 하이드로 시뮬레이션을 수행하여 여폭약과 수폭약간 거리 및 중간 완충제에 따른 순폭 여부를 예측하였다. 계산 결과, 가까운 거리의 화약 간 순폭은 충격 점화로 인해 발생하며, 상대적으로 먼 거리의 경우에는 케이스의 파손으로 발생한 파편과의 충돌이 주요 원인으로 나타났다. 완충제는 폭굉파와 파편의 효과를 억제하여 동조폭발의 발생 확률을 낮출 수 있는 것으로 예측되었다.

Keywords

References

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