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

The Korea Institute of Military Science and Technology (한국군사과학기술학회)
권호 표지
DOI QR코드

DOI QR Code

Integration of 3-Dim SPH Scheme into the ExLO Code

극대변형 해석을 위한 SPH 수치기법 개발 및 ExLO 코드 연계

  • Received : 2011.03.25
  • Accepted : 2011.05.13
  • Published : 2011.06.05
Download PDF
⟨ Previous Next ⟩

Abstract

This paper describes the development of SPH(Smooth Particle Hydrodynamics) scheme and integration into the multi-material shock physics code(ExLO) for the purpose of the application to the extreme large deformation problems. SPH numerical scheme has been extended into the fluid dynamics and the high-speed impact events, such as space structure protection against space debris and meteorite catering. Like other hydrocodes, SPH scheme also solves the conservation equations with the constitutive equation including equation of state. The benchmark problem, Taylor-Impact test, was simulated and the predictions show good agreements with both the published numerical data and experimental data. Currently, the contact treatment between materials is under development.

Keywords

References

  1. Isbell, W. M., and Tedeschi, M. J., "Hypervelocity Research and the Growing Problem of Space Debris", International Journal of Impact Engineering, Vol. 14, pp. 359-372, 1993. https://doi.org/10.1016/0734-743X(93)90034-5
  2. Libersky, L. D., Petscheck, A. G., Carney, T. C., Hipp, J. R. and Allahddi, F. A., "High Strain Lagrangian Hydrodynamics-a Three-Dimensional SPH Code for Dynamic Material Response", Journal of Computational Physics, Vol. 109, pp. 67-75, 1993. https://doi.org/10.1006/jcph.1993.1199
  3. Johnson, G. R., Petersen, E. H. and Stryk, R. A., "Incorporation of an SPH option into the EPIC Code for a Wide Range of High Velocity Impact Computations", International Journal of Impact Engineering, Vol. 14, pp. 385-394, 1993. https://doi.org/10.1016/0734-743X(93)90036-7
  4. Lee, M., Chung, W. J., Kim, H. J., and Kim, H.W., "ExLO : A Three-Dimensional Total Shock Physics Code", Journal of Mechanical Science and Technology, Vol. 23, pp. 1636-1641, 2009.
  5. 서송원, A Study on Elasto-Plastic Contact Algorithm in SPH using Reproducing Condition and Penalty Method, 박사학위 논문, 연세대학교, 2003.
  6. Petschk, A. G. and Libersky, L. D., "Cylindrical Smoothed Particle Hydrodynamics", J. of Computational Mechnics, Vol. 109, pp. 76-83, 1993. https://doi.org/10.1006/jcph.1993.1200
  7. Lucy, L. B., "Numerical Approach to Testing the Fission Hypothesis", Astronomical Journal, Vol. 82, pp. 1013-1024, 1997.
  8. Monaghan, J. J., "Why Particle Methods Work", SIAM Journal on Scientific and Statistical Computing, Vol. 3, pp. 422-433, 1982. https://doi.org/10.1137/0903027
  9. Randles, P. E. and Libersky, L. D., "Smooth Particle Hydrodynamics Some Recent Improvements and Applications", Computor Methods in Applied Mechanics and Engineering, Vol. 139, pp. 375-408, 1996. https://doi.org/10.1016/S0045-7825(96)01090-0
  10. Liu, G. R. and Liu, M. B., Smooth Particle Hydrodynamics; a Meshless Particle Method, World Scientific, NewJersey, pp. 324-329, 2003.
  11. Hayhurst, C. J., Clegg, R. A., Livingstone, I. H. and Francis, N. J., "The Application of SPH Technologys in AUTODYN-2D to Ballistic Impact Problems", 16th Int. Symposium on Ballistics, San Francisco, 23-28 September, 2006, Vol. 3, pp. 409-417, 1996.