Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Analysis of Hypervelocity Impact Fracture Behavior of Multiple Bumper Steel Plates

다층 강재 방호판의 초고속 충격 파괴거동해석

  • Jo, Jong Hyun (Dept. of Mechanical Design Engineering, Chungnam Nat'l Univ.) ;
  • Lee, Young Shin (Dept. of Mechanical Design Engineering, Chungnam Nat'l Univ.) ;
  • Kim, Jae Hoon (Dept. of Mechanical Design Engineering, Chungnam Nat'l Univ.) ;
  • Bae, Yong Woon (Agency for Defense Development)
  • 조종현 (충남대학교 기계설계공학과) ;
  • 이영신 (충남대학교 기계설계공학과) ;
  • 김재훈 (충남대학교 기계설계공학과) ;
  • 배용운 (국방과학연구소)
  • Received : 2012.12.27
  • Accepted : 2013.03.18
  • Published : 2013.06.01
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Abstract

New warheads are designed and developed to be highly lethal when used as part of ballistic missile payloads. There are many trades associated with the design of a central warhead core, mainly dealing with the projectiles or penetrators. Obviously, a payload-type configuration is very susceptible to kills from one projectile because of the high impacts required for bomblet or submunition payloads. Based on these requirements, the optimum kill vehicle configuration will have the smallest mass and relative velocity that will kill all the submunitions. The designs of the penetrator shape and size are directly related to the space and weight of the warhead. The shape, size, L/D, penetrator material, and manner in which they are inserted inside the surrounding explosive segments are critical in achieving successful penetrator design. The AUTODYN-3D code was used to study the effect of penetrator penetration. The objective of numerical analysis was to determine the penetration characteristics of the penetrator produced by hypervelocity impacts under different initial conditions such as initial velocity, shape, and L/D of the penetrator.

새로운 탄두 기술은 탄도 미사일 적재로부터 높은 파괴성능을 얻기 위해 설계 및 개발 되어왔다. 주로 발사체 또는 관통자를 포함하는 중앙 탄두 코어의 설계와 관련된 많은 연구가 있다. 분명히, 소형 폭탄 또는 자탄 적재 유형 구성은 많은 충격을 요구하기 때문에 하나의 발사체로부터 살상에 매우 취약하다. 이러한 요구사항을 바탕으로 최적의 직격요격체 구성은 모든 자탄을 직격할 수 있는 최소 질량과 상대 속도를 가져야 한다. 관통자 형상과 크기의 설계는 직접적으로 탄두의 공간과 중량에 관련되어 있다. 관통자의 형상, 크기, L/D, 재료 그리고 폭발팩의 구간 내부에 삽입되는 방식은 성공적인 관통자 설계 완성에 중요하다. AUTODYN-3D code 가 관통자의 관통특성을 연구하기 위해 사용되었다. 수치해석의 목적은 초기속도, 관통자의 L/D 및 형상과 같은 다양한 초기 조건 아래 초고속 충격에 의해 생성되는 관통자의 관통특성을 확인하는 것이다.

Keywords

References

  1. "The Resistance of Various Metallic Materials to Perforation by Steel Fragments,"Ballistic Analysis Laboratory, Johns-Hopkins University, Baltimore, MD, BAL, April 1963, THOR TR No. 51, Confidential.
  2. Wollmann, E., Hoog, K., Koerber, G., Wellige, B., 1996, "Performance of Ballistic Terminal Performance at Incidence," Institut Franco-Allemand De Recherches De Daint-Louis, Deutsh-Franzoisches Forschung Instut Saint Louis, ISL, Rl 10/96.
  3. Kim, Y.H., 2010, "Ballistic Missile Defense System : Its Current Status and South Korea's Policy Choice," The Korean Journal of International Relations, Vol. 50, No. 5, pp. 151-164.
  4. Park, J.S., Kang, H.G., Park, D.Y. and Yun, T.G., 2012, "Near Miss Warhead Developments Status for International Ballistic Missle Defense," Proceedings of 2012 conference of the KIMST, pp. 1766-1769.
  5. Lloyd, R.M., 1998, "Conventional Warhead Systems Physics and Engineering Design," Progress in Astronautics and Aeronautics, AIAA Book, Vol. 179.
  6. Lloyd, R.M., 2001, "Physics of Direct Hit and Near Miss Warhead Technology," Progress in Astronautics and Aeronautics, AIAA Book, Vol. 194.
  7. Paulus, G., 2004, "Geschoss mit erhohter Lateralwirkung (PELE). Eine Theorie der Lateralwirkung Beim Durchschlag Einer Dunnen Platte," ISL-Report R 115/2004.
  8. Jo, J.H., Lee, Y.S., Kim, J.H. and Bae, Y.W., "A Study on Hypervelocity Penetration Characteristics of Tungsten Cylindrical Penetrator,"Proceedings of the KSME 2012 Fall conference of the KSME, pp. 2131-2137.
  9. WWW1.ANSYS.COM,"ANSYS/AUTODYN-3D," 12.1 User's Manual, Material Models Chapter (2011).
  10. Jo, J.H. and Lee, Y.S., 2012,"Numerical Simulation of Failure Mechanism of PELE Perforating Thin Target Plates,"Trans. Korean Soc. Mech. Eng. A, Vol.36, No.12, pp. 1577-1583. https://doi.org/10.3795/KSME-A.2012.36.12.1577
  11. Jo, J.H., Lee, Y.S. and Jin, H.L., 2012,"Numerical Simulation of Steel/Kevlar Hydrid Composite Helmet Subjected to Ballistic Impact," Trans. Korean Soc. Mech. Eng. A, Vol. 36, No.12, pp. 1569-1575. https://doi.org/10.3795/KSME-A.2012.36.12.1569

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