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

The Korean Society of Mechanical Engineers (대한기계학회)
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Accuracy of Fire of a Mortar via Multibody Dynamics Analysis

다물체 동역학 해석을 통한 포의 사격정확도 분석

  • Received : 2015.08.10
  • Accepted : 2015.12.07
  • Published : 2016.02.01
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Abstract

For this research, the trajectory of a projectile was simulated via the multibody dynamics analysis of a self-propelled mortar. The dynamic model was composed of a mortar model and a vehicle model, and was simulated using the RecurDyn program. Interior ballistic was applied to the mortar model, and exterior ballistic was conducted by Matlab using the simulation results of the interior trajectory. Through repetitive Monte-Carlo simulations, the accuracy of the mortar was analyzed by considering variations in the aiming angle and vehicle dynamic response.

본 연구에서는 자주박격포의 다물체동역학 모델을 만든 뒤, 포탄의 탄도학을 고려하여 시뮬레이션 하였다. 자주박격포 모델은 박격포 모델 및 차량 모델로 구성하였으며, 상용 다물체 해석 프로그램인 RecurDyn 을 사용하였다. 차량 모델은 6 자유도 강체플랫폼으로 모델링 하였으며, 박격포 발사 직후의 움직임에는 강내탄도학을 적용하였다. 강내탄도학 해석의 결과를 바탕으로, 포신을 떠난 후의 강외탄도 해석을 수행하였다. 몬테카를로 기법을 활용한 반복 해석으로 발사각과 차량 동특성에 의한 변동이 고려된 탄착점의 분산도를 구하여 사격정확도를 제시하였다.

Keywords

References

  1. Kim, S., Kim, K. H. and Kim, S. Y., 2009, "A Concept Study on Efficient Domestic Development of 120mm Self-propelled Mortar System," Journal of the Korea Institute of Military Science and Technology, Vol. 12, No. 2, pp. 133-138.
  2. Sung, H. G., Jang, J. S., Yoo, S. Y. and Roh, T. S., 2011, "Development of Numerical Code for Interior Ballistics and Analysis of Two-phase Flow according to Drag Models," Journal of the Korean Society of Propulsion Engineers, Vol. 15, No. 6, pp. 38-46.
  3. Lee, S. K. and Lee, G. Y., 2007, "A Study on the Pressure-travel Curve of 5.56mm Rifle Obtained from the Empirical Base Pressure Factor," Journal of the Korea Institute of Military Science and Technology, Vol. 10, No. 3, pp. 208-216.
  4. FunctionBay, 2013, "RecurDyn v8.2 Help"
  5. Lee, B. H. and Yoo, W. S., 1993, "Dynamic Analysis of a Launcher under Impulsive Forces," Transactions of KSAE, Vol. 15, No. 2, pp. 84-91.
  6. Carl De Boor., 1978, A Practical Guide to Splines, Springer
  7. Donald E. Carlucci. and Sidney S. Jacobson., 2007, Ballistics, Theory and Design of Guns and Ammunition, Taylor & Francis Group.
  8. Choi, Y. C., Kim, K. S., Kim, O. J. and Yoo, W. S., 1998, "Development of CAE Tools for Vehicle Suspension Design (I) - Development of a Bushing Module," Transactions of KSAE, Vol.6, No.6, pp.31- 39.
  9. Singiresu S. Rao., 2011, Mechanical Vibrations, Pearson Education, Inc.
  10. Math Works, Inc., 2015, "Signal Processing Toolbox User's Guide"
  11. Lee, H. J., 1996, Rifle and Ballistics, Chung Moon Gak.
  12. Robert L. McCoy., 2012, Modern Exterior Ballistics, The Launch and Flight Dynamics of Symmetric Projectiles, Schiffer Publishing Ltd.
  13. Trohanowsky, Raymond., 2005, "120 mm Mortar System Accuracy Analysis," International Infantry & Joint Services Small Arms System Annual Symposium, Exhibition & Firing Demonstration.
  14. Chae, A. K., Bae, D. S. and Jeon, H. S., 2008, "A Development of Numerical Analysis Software on Dynamic Analysis for Lunching System," Journal of the Korea Institute of Military Science and Technology, Vol. 32, No. 12, pp. 1146-1152.