CIP and CA Based Large Deformation Analysis of Collapse of a Soil Column

This paper presents a numerical method for large deformation analysis of collapse of a soil column. The CA (Cellular Automata) method, which deals with the prediction of behavior of granular assemblage based on simple local rules, and the CIP (Cubic Interpolated Pseudoparticle) method, which treats solid, liquid and gas together in the framework of fluid dynamics, are used as numerical solvers. The CIP solver can correctly define the behavior at interfaces and can also be used as a unified scheme for both compressible and incompressible materials. In the simulations based on the CA method, two different particle sizes are used. On the other hand, for the CIP method a Bingham plastic model that takes the minimum undrained strength of soil into account is used as the basic constitutive model. Simulations results obtained from both methods are discussed.