한국시뮬레이션학회논문지 (Journal of the Korea Society for Simulation)

한국시뮬레이션학회 (The Korea Society for Simulation)
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격실 내 장애물이 폭압에 의한 인원 피해에 미치는 영향

The Effect of Obstacles in a Compartment on Personnel Injury Caused by Blast

  • 투고 : 2017.04.06
  • 심사 : 2017.06.30
  • 발행 : 2017.09.30
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초록

격실 내부에서의 폭발로 인한 인원의 피해를 분석하였다. 특히 격실 내에서 폭압 전파에 영향을 미치는 돌출된 장애물의 유무에 따른 인원 피해를 비교하였다. 격실 내에 장애물이 없는 경우에 경험적 고속처리모델을 이용하여 폭압을 예측할 수 있다. 하지만 격실 내부에서는 폭압 프로파일이 개활지에서와 달리 복잡하며 의자와 같은 구조물이 존재하는 경우에는 경험적 고속처리모델 적용이 불가하다. 따라서 장애물이 있는 격실 내부 폭압은 유한요소해석을 이용해 획득하였다. 또한 개활지의 폭압 프로파일을 기준으로 개발된 Friedlander 압력-충격량 곡선을 격실 내부에서의 복잡한 폭압 전파로 인해 피해평가에 적용할 수 없어, Axelsson 단자유도 모델을 적용하여 인원 피해를 분석하였다. 장애물이 있는 경우 인원의 흉벽 속도는 26에서 76 퍼센트(%) 만큼 감소되었으며 격실내 인원피해 또한 감소되었다.

Blast injuries in a compartment are investigated, and the effects of obstacles on blast injury are particularly analyzed by comparing injuries in the compartments with or without protruding obstacles inside. Even if blast pressure profile tends to be complicated in a confined space unlike in open field, it can be obtained in a relatively short time by using some empirical fast running models for simple confined spaces. However, a finite element method should be employed to obtain blast pressure profiles in a case with obstacles in confined spaces, because the obstacles heavily disturb blast waves. On the other hand, Axelsson SDOF(Single degree of freedom) model and ASII(Adjusted severity of injury index) injury level are employed to estimate blast injury in compartments, because the usual pressure-impulse injury criterion based on the ideal Friedlander waves in open the field cannot be applied to personnel in a confined space due to complexity of blast waves inside. In cases with obstacles, chest wall velocity was reduced by 26 to 76 percent(%) and the personnel injury in the compartment caused by blast was also reduced.

키워드

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