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Numerical analysis on Deformation of Seabed Structures with various size materials by DEM

  • Kim, Mi-Kum (Department of Civil Engineering, Tottori University) ;
  • Kim, Chang-Je (Division of Navigation System Engineering, Korea Maritime University)
  • Published : 2007.09.30

Abstract

In the majority of previous studies on deformation of seabed structures using DEM, elements of structures have been assumed that it is composed with uniform materials or received fixed wave force, despite that actual submerged structures are composed with various size materials and influenced by complicated fluid field. The goal of this study is to develop a new model for analysis of seabed structure deformation using discontinuous structures composed with various size materials. As the first phase, a model using DEM and VOF, which can compute the deformation of submerged structures composed with various size materials, such as rubble mound structures, is proposed. A model test is carried out and then the validity of the model is discussed.

Keywords

References

  1. Araki, S., Kotake, Y. Kanazawa, T., Matsumura, A., and Deguchi, I. (2001), 'Numerical simulation of deformation of rubble mound seawall with VOF and DEM', Proceedings of coastal engineering, JSCE, Vol. 48, pp.931-935
  2. Araki, S. Yanagihara, T., and Deguchi, I. (2003). 'Numerical simulation on 3-dimensional deformation of submerged breakwater with discrete element method', Proceedings of coastal engineering, JSCE, Vol. 50, pp.831-835
  3. Coastal Development Institute of Technology (2001), 'Research and development of CADMAS-SURF', No.12
  4. Cundall, P. A. (1971), 'A computer model for simulating progressive, large-scale movements in blocky rock systems', Symposium on rock mechanics, Nancy, Vol.2, pp.129-136
  5. Hirt, C. W. and Nichols, B. D. (1981), 'Volume of fluid method for the dynamics of free boundaries', J. Comp. Phys., Vol.39, pp.201-225 https://doi.org/10.1016/0021-9991(81)90145-5
  6. Itoh, K., Higuchi, Y., Toue, T, and Katsui, H. (2001). 'DEM simulation of submerged breakwater deformation in consideration for randomness of rubbles', Proceedings of coastal engineering, JSCE, Vol. 48, pp.806-810
  7. Japan Society of Civil Engineers. (1971), Formulary on hydraulics, pp. 523
  8. Kiyama, H., Fujimura, H., and Nishimura, T. (1988), 'Theoretical analysis of Fenner-Pacher type characteristic curves for tunneling by DEM', Journal of geotechnical engineering, 394/2-9, pp. 37-44
  9. Maeno, S., Ogawa, M., and Bierawski, L. G. (2006), 'Analysis on deformation of the permeable submerged breakwater by coupling of VOF, DEM and FEM', Annual conference of Coastal Engineering, JSCE, Vol. 53, pp.886-890