3-=Tres Dimensional istinct element simulation of liquefaction phenoma

ABSTRACT

The mechanism of liquefaction pehnomenon at microscopic level is studied using 3-Dimensional Distinct Element Model (3D-DEM) in which the effects of pore-water are directly considered using a simple algorithm. In this method, the region of DE simulation model, which is composed of many particle elements, is considered as an assembly of cubic shaped blocks having virtual boundary. Behavoir of pore-water is calculated usign each block as a unit volume in order to make the calculation algorithm simple. We applied the method to the hollow cylindrical torsion test and san boiling due to liquefaction. The simulation results obtained showed that the proposed 3-Dimensional Distinct Element Method can simulate the mechanism of liquefaction and its associated phenomena. (AU)