한국군사과학기술학회지 (Journal of the Korea Institute of Military Science and Technology)

  • 제11권6호
  • /
  • Pages.164-171
  • /
  • 2008
  • /
  • 1598-9127(pISSN)
  • /
  • 2636-0640(eISSN)
한국군사과학기술학회 (The Korea Institute of Military Science and Technology)
권호 표지

입자법을 이용한 축대칭 탄자의 관통거동 수치해석 연구

A Study on Numerical Perforation Analysis of Axisymmetric Bullet by the Particle Method

  • 발행 : 2008.12.31
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

A modified generalized particle algorithm, MGPA, was suggested to improve the computational efficiency of standard SPH method in numerical analysis of high speed impact behavior. This method uses a numerical failure mechanism than material failure models to describe the target penetration. MGPA algorithm was more effective to describe the impact phenomena and new boundaries produced during the calculation process were well recognized and treated in the target penetration problem of a bullet. When bullet perforation problems were analyzed by this method, MGPA algorithm calculation gives the stable numerical solution and stress oscillation or particle penetration phenomena were not shown. The error range in ballistic velocity limit is less than $2{\sim}13%$ for various target thickness.

키워드

참고문헌

  1. L. B. Lucy, "A Numerical Approach to the Testing of the Fission Hypothesis", Astron. J., Vol. 82, pp. 1013-1024, 1977 https://doi.org/10.1086/112164
  2. R. A. Gingold and J. J. Monaghan, "Smoothed Particle Hydrodynamics : Theory and Application to Non-Spherical Stars", Monthly Notices Roy. Astron. Soc., Vol. 181, pp. 375-389, 1977 https://doi.org/10.1093/mnras/181.3.375
  3. W. Banz, "Smooth Particle Hydrodynamics : A Review", Harvard- Smithsonian Center for Astrophysics, Preprint No. 2884, 1989
  4. L. D. Libersky and A. G. Petschek, "Smooth Particle Hydrodynamics with Strength of Materials, Advances in the Free-Lagrange Method", Lecture Notes in Physics, Vol. 395, pp. 248-257, 1990
  5. J. K. Chen, J. E. Beraun and T. C. Carney, "A Corrective Smooth Particle Method for Boundary Value Problems in Heat Conduction", International Journal for Numerical Methods in Engineering, Vol. 46, pp. 231-252, 1999 https://doi.org/10.1002/(SICI)1097-0207(19990920)46:2<231::AID-NME672>3.0.CO;2-K
  6. P. W. Randles and L. D. Libersky, "Normalized Smooth Particle Hydrodynamics with Stress Points", International Journal for Numerical Methods in Engineering, Vol. 48, pp. 1445-1462, 2000 https://doi.org/10.1002/1097-0207(20000810)48:10<1445::AID-NME831>3.0.CO;2-9
  7. G. R. Johnson, R. A. Stryrk and S. R. Beissel, "A Generalized Particle Algorithm for High Velocity Impact Computations", Computational Mechanics, Vol. 25, pp. 245-256, 2000 https://doi.org/10.1007/s004660050473
  8. 김용환, 김용석, "수정 GPA법을 이용한 충돌거동의 수치해석에 대한 연구", 한국정밀공학회지, 제21권, 제1호, pp. 189-196, 2004
  9. T. Borvik, O. S. Hopperstad, M. Langseth and K. A. Malo, "Effect of Target Thickness in Blunt Projectile Penetration of Weldox 460 E Steel Plates", International Journal of Impact Engineering, Vol. 28, pp. 413-464, 2003 https://doi.org/10.1016/S0734-743X(02)00072-6
  10. T. Borvik, M. Langseth and K. A. Malo, "Perforation of 12mm Thick Steel Plates by 20mm Diameter Projectiles with Flat, Hemispherical and Conical Noses. Part I : Experimentally Study", International Journal of Impact Engineering, Vol. 27, pp. 19-35, 2002 https://doi.org/10.1016/S0734-743X(01)00034-3