Discrete Element Method
Summary
The discrete element method (DEM) is a finite difference scheme.
It is used to study assemblies of individual particles. By monitoring the interaction between particles, the behavior of the material is known.
Current Research
Our current research goal at UNM is:
to study the behavior of granular media using ELLIPSE3H.
using Magnetic Resonant Imaging to obtain micro-information of specimens with Ottawa sands,
to develop constitutive models for granular media based on micromechanics behavior.
Discrete Element Codes Developed at UNM
- ELLIPSE2 - 2-D DEM for ellipses (with periodic space or rigid boundary).
- PENC - 2-D DEM for penetration process
(1)
(2)
of concrete target and a rigid ogive shape penetrator.
- ELLIPSE3 - 3-D DEM for ellipsoids (with periodic space or rigid boundary); it can also perform direct shear test, or simple shear test in addition to triaxial test.
- ELLIPSE3H - 3-D DEM for ellipsoids with hydrostatic boundary to simulate triaxial tests.
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