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2025 Vol.38, Issue 2 Preview Page

Research Paper

Accuracy Verification Through Comparison of Interior Ballistic Simulations Using a Lumped Parameter Model and Experimental Results

집중 매개변수 모델을 이용한 강내탄도 해석과 시험 비교를 통한 정확도 검증

Gyu-Seok Son1
,
Gyu-Cheol Choi2
,
Min-Seop Kwon2
,
Hojun Lee2
,
Hyeokwon Kim3
,
Min-Seok Oh4
,
Young-In Park4
,
Soo-Ho Chang5
,
Jeaho Jung6*
손 규석1
,
최 규철2
,
권 민섭2
,
이 호준2
,
김 혁원3
,
오 민석4
,
박 용인4
,
장 수호5
,
정 재호6*
1Graduate Student, School of Mechanical Engineering, ChungBuk National University, Cheongju, 28644, Korea
2Undergraduate Student, School of Mechanical Engineering, ChungBuk National University, Cheongju, 28644, Korea
3Graduate Student, Department of Mechanical Engineering, Korea Advanced Institute of Science and Tecnology, Daejeon, 34141, Korea
4Senior Research Engineer, Poongsan Defense R&D Institute, Gyeongju, 780801, Korea
5Principal Research Engineer, Poongsan Defense R&D Institute, Gyeongju, 780801, Korea
6Professor, School of Mechanical Engineering, ChungBuk National University, Cheongju, 28644, Korea
1충북대학교 기계공학부 석사과정
2충북대학교 기계공학부 학사과정
3한국과학기술원 기계공학과 석사과정
4풍산 방산기술연구원 선임연구원
5풍산 방산기술연구원 이사
6충북대학교 기계공학부 교수
*Corresponding Author
30 April 2025. pp. 109-115
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Abstract

This study analyzed the muzzle velocity and chamber pressure of a projectile, which was fired from a 40 mm L/70 barrel weapon system using the IBHVG2 (Interior Ballistics of High Velocity Guns, version 2) code, and compared the results with experimental data. The Chambrage model, based on the Lumped Parameter Model, was used to analyze the projectile velocity and chamber pressure, and a total of 10 firing tests were conducted. The reaction rate coefficient of the propellant, used as an input parameter for the analysis, was estimated through closed bomb tests. A comparison of the analysis and experimental results revealed approximate deviations of 6% in the muzzle velocity and 8% in the maximum chamber pressure. In conclusion, the study validated the effectiveness and predictive accuracy of the IBHVG2 model while identifying potential areas for improvement.

Keywords
IBHVG2
interior ballistic
chamber pressure
base pressure
closed boom test

본 연구는 강내탄도 해석 코드 IBHVG2(Interior Ballistics of High Velocity Guns, version 2)를 이용하여 40mm L/70 포신을 가진 무기체계에서 발사체의 출구 속도와 약실 압력을 해석하고, 시험 결과와 비교를 수행하였다. 집중 매개변수 모델(Lumped Parameter Model)을 기반으로 한 Chambrage 모델을 적용하여 탄환 속도와 약실 압력 해석을 수행하였고 시험은 총 10회를 수행하였다. 해석 인자로 들어간 추진제의 반응률 계수는 폐쇄 폭발 실험(Closed Bomb Test)를 통해 추정하였다. 해석과 시험을 비교한 결과 탄환의 출구 속도는 약 6% 정도 오차를, 약실 최대 압력은 8% 정도의 오차를 보였다. 결론적으로 IBHVG2 모델의 유효성과 예측 정확도를 확인하였으며, 개선의 여지가 있음을 확인하였다.

키워드
IBHVG2
강내 탄도학
약실 압력
기저 압력
폐쇄 폭발 실험
References
1

Anderson, R.D., Fickie, K. (1987) IBHVG2 (Interior Ballistics of High Velocity Guns, Version 2)-A User's Guide, Technical Report, BRL-TR-2829.

2

Frederick, W.R., Timothy, S.R. (1988) A Lumped -Parameter Interior Ballistic 0 Computer Code Using The TTCP Model, Memorandum Report, BRL-MR-3710.

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Gough, P.S (1990) The XNOVAKTC Code, BRL-CR-627.

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Gough, P.S. (1993) Formulation of a Next-Generation Interior Ballistic Code, ARL-CR-68.

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Jang, J.S., Oh, S.H., Rho, T.S. (2015) Three-Dimensional Computational Analysis of Interior Ballistics, Proc. Korean Soc. Propuls. Eng. Conf., pp.672~675.

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Siewert, J., Cytron, S. (2005) Rifling Profile Push Tests: An Assessment of Bullet Engraving Forces in Various Rifling Designs, Contractor Report ARAET-CR-04002, Arrow Tech Associates & ARDEC, pp.708~712.

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Sung, H.G., Jang, J.S., Yoo, S.Y., Rho, T.S. (2011) Develop- ment of Numerical Code for Interior Ballistics and An- alysis of Two-phase Flow according to Drag Models, J. Korean Soc. Propuls. Eng., 15(6), pp.38~46.

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Information
  • Publisher :Computational Structural Engineering Institute of Korea
  • Publisher(Ko) :한국전산구조공학회
  • Journal Title :Journal of the Computational Structural Engineering Institute of Korea
  • Journal Title(Ko) :한국전산구조공학회 논문집
  • Volume : 38
  • No :2
  • Pages :109-115
  • Received Date : 2024-12-20
  • Revised Date : 2025-01-13
  • Accepted Date : 2025-01-13
  • DOI :https://doi.org/10.7734/COSEIK.2025.38.2.109
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