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NUMERICAL MODELING OF GRANULAR SOILS UNDER CYCLIC TRIAXIAL TESTINGAuthors: Manne Akhila,Dr D Neelima Satyam Conference: Indian Geotechnical Conference (IGC-2013 2013) Location Roorkee, India Date: 2013-12-22 Report no: IIIT/TR/2013/46 AbstractThe complexity involved in understanding physical phenomena is obvious and can be attempted by simulating them. Simulation of complex phenomena such as liquefaction of soil requires the understanding of mechanism rather than the basis for the cause. Numerical simulations are capable of providing a comprehensible basis for such complex phenomena. In this study, it has been attempted to understand the behavior of granular soils under cyclic loading by 3D modeling of cyclic triaxial test. Nonlinear behavior of soil can be best embodied by Discrete Element Modeling (DEM) as it considers soil as discrete assembly of particles. So, using DEM cyclic triaxial testing has been modeled in undrained condition for an assemblage of random spherical particles of equal and different sizes. From the analysis it has been identified that at a constant confining pressure and loading, uniformly graded sample has a greater resistance to failure during cyclic loading than non-uniform distribution. The outcome of the study is useful to understand liquefaction phenomena. Full paper: pdf Centre for Earthquake Engineering |
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