한국추진공학회지 (Journal of the Korean Society of Propulsion Engineers)

  • 제22권6호
  • /
  • Pages.134-141
  • /
  • 2018
  • /
  • 1226-6027(pISSN)
  • /
  • 2288-4548(eISSN)
한국추진공학회 (The Korean Society of Propulsion Engineers)
권호 표지
DOI QR코드

DOI QR Code

MDF를 이용한 알루미늄 평판 절개 해석

Numerical Analysis of MDF for Aluminum Plate Cutting

  • Lee, Juho (The 4th R&D Institute, Agency for Defense Development)
  • 투고 : 2018.06.04
  • 심사 : 2018.10.14
  • 발행 : 2018.12.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

본 연구에서는 MDF(Mild-detonating Fuse)를 이용한 선형분리장치 개발 가능성을 확인하기 위해 기초 연구를 수행하였다. 지름이 작은 금속(납) 튜브 내부에 화약(RDX)이 충전되어 있는 MDF를 활용한 알루미늄 평판 절개 기초 시험을 수행하였다. 평판의 두께와 MDF의 단위 길이당 화약량을 조절해가며 시험을 수행하였으며, 평판 두께와 화약량에 따른 절개 여부를 확인하였다. 시험 결과를 바탕으로 AUTODYN 기반의 수치 해석 모델을 개발하였으며, 정확한 파괴 조건을 결정하였다. 시험 및 해석 결과 분석을 통해 MDF의 알루미늄 평판 절개 메커니즘과 특성을 확인하였으며, 체계 적용 가능성을 확인하였다. 개발된 해석 기법을 활용하면 다양한 MDF 및 구조물에 대한 절개 가능 여부를 미리 확인하여 개발 과정에서의 시험 비용을 최소화 할 수 있다.

In this paper, the possibility of using an MDF (Mild-detonating Fuse) as a linear separation device is studied. An MDF is a small diameter metal (lead) tube filled with explosives (RDX). Aluminum plate cutting experiments are carried out with different values of target plate thickness and explosives per unit length. Based on the experimental results, a numerical analysis method including the failure criteria is established. The mechanism and characteristics of using MDFs for aluminum plate cutting are identified; the possibility of using the current system as a linear separation device is verified. By utilizing a developed numerical method, the separation reliability for diverse structures and MDFs can be predicted in advance and the number of experiments required for development can be minimized.

키워드

참고문헌

  1. Brauer, K.O., Handbook of Pyrotechnics, Chemical Publishing Co., New York, N.Y., U.S.A., 1974.
  2. Lee, Y.J., Koo, S.H., Jang, H.B. and Lee, B.E., "A Study of Separation Mechanism in Ball Type Separated Bolt," Journal of the Korean Society of Propulsion Engineers, Vol. 15, No. 2, pp. 62-67, 2011.
  3. Hwang, D.H., Lee, J., Han, J.H., Lee, Y. and Kim, D., "Numerical Analysis and Simplified Mathematical Modeling of Separation Mechanism for the Ball-type Separation Bolt," Journal of the Korean Society of Propulsion Engineers, Vol. 20, No. 3, pp. 63-70, 2016. https://doi.org/10.6108/KSPE.2016.20.3.063
  4. Cao, L., Lin, Y., Lu, F., Chen, R. and Wen, X., "Study on energy output efficiency of mild detonating fuse in cylinder tube structure," Materials and Design, Vol. 92, pp. 690-700, 2016. https://doi.org/10.1016/j.matdes.2015.12.071
  5. Park, B.C., Chang, I.H., Lee, W.J. and Keon, J.C., "The Research on Development of Flexible Linear Shaped Charge," Journal of the KIMST, Vol. 12, No. 3, pp. 378-387, 2009.
  6. Cooper, P.W., Explosives Engineering, Wiley-VCH, Inc., New York, N.Y., U.S.A., 1996.
  7. Meyers, M.A., Dynamic Behavior of Materials, John Wiley & Sons, Inc., New York, N.Y., U.S.A., 1994.
  8. Lee, J., Han, J.H., Lee, Y. and Lee, H., "Separation characteristics study of ridge-cut explosive bolts," Aerospace Science and Technology, Vol. 39, pp. 153-168, 2014. https://doi.org/10.1016/j.ast.2014.08.016
  9. Lee, J., Han, J.H., Lee, Y. and Lee, H., "A Parametric Study of Ridge-cut Explosive Bolts using Hydrocodes," International Journal of Aeronautical and Space Sciences, Vol. 16, No. 1, pp. 50-63, 2015. https://doi.org/10.5139/IJASS.2015.16.1.50
  10. Jeong, D. and Lee, Y., "Study of Separation Mechanism According to the Constraint Condition of Explosive Bolts," Journal of the Korean Society of Propulsion Engineers, Vol. 20, No. 2, pp. 67-74, 2016. https://doi.org/10.6108/KSPE.2016.20.2.067
  11. Lee, J., Hwang, D.H., Jang, J.K., Kim, D.J., Lee, Y., Lee, J.R. and Han, J.H., "Pyroshock Prediction of Ridge-cut Explosive Bolts Using Hydrocodes," Shock and Vibration, Vol. 2016, Article ID 1218767, 2016.