DEM-FEM model of highly saturated soil motion due to seepage force

Lechoslaw G. Bierawski; Shiro Maeno

doi:10.1061/(ASCE)0733-950X(2006)132:5(401)

DEM-FEM model of highly saturated soil motion due to seepage force

Lechoslaw G. Bierawski, Shiro Maeno

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

This paper examines a new approach to the problem of modeling transport phenomena that occur inside highly saturated discrete soil due to seepage force. The theory is based on a combination of the finite-element method (FEM), a solution of the poroelastic equations, and the distinct-element method (DEM) to produce a coupled numerical model. The FEM is used to calculate pore-water pressure fluctuations while the DEM is used to simulate the interactions between particles of submerged soil. This combination of different numerical schemes enables simulation of movements inside the granular material under the influence of pore-water pressure gradients. This theory and the equations used are presented and the parameters discussed. The functionality of the theory is tested in an application of the model to an embedded vertical seawall, and its accuracy is verified by a small-scale laboratory test.

Original language	English
Pages (from-to)	401-409
Number of pages	9
Journal	Journal of Waterway, Port, Coastal and Ocean Engineering
Volume	132
Issue number	5
DOIs	https://doi.org/10.1061/(ASCE)0733-950X(2006)132:5(401)
Publication status	Published - Sep 1 2006

Keywords

Coupling
Discrete elements
Finite element method
Numerical models
Seepage

ASJC Scopus subject areas

Civil and Structural Engineering
Water Science and Technology
Ocean Engineering

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DEM-FEM model of highly saturated soil motion due to seepage force

Abstract

Keywords

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