Eventos Anais de eventos
CONEM 2018
X Congresso Nacional de Engenharia Mecânica
Dynamic Simulation of Soil-Structure Interaction using the Discrete Element Method
Submission Author:
Marcelo Augusto Di Grandi Nery , SP , Brazil
Co-Authors:
Marcelo Augusto Di Grandi Nery, EUCLIDES MESQUITA
Presenter: Marcelo Augusto Di Grandi Nery
doi://10.26678/ABCM.CONEM2018.CON18-0195
Abstract
This article presents a transient simulation using the Discrete Element Method (DEM) applied to Dynamic Structure-Soil Interaction (DSSI). The particles of soil and boundary are composed by disks with distinct diameters. In the algorithm applied in this work, all particles of the foundation work in compression-tension mode while the particles of the soil work only in compression mode. The particles of the boundary are fixed with determined damping coefficient. All particles of the system contain normal and tangential stiffness, damping coefficient and it also being considered rolling resistance and friction coefficient between the adjacent elements. This work presents a constitutive linear and non linear model of tension-compression. In the top layer of the foundation is applied a sinusoidal load in order to study the particles movement as well as the interaction between foundation and soil. Also, a gravitational force is considered for all particles, except for the boundary. The movement equations that govern the system are integrated in time step using the Verlet algorithm scheme. The results obtained by DEM applied to the DSSI are compared with the literature by a linearized continuum approach which describes an unbounded soil domain over a sinusoidal external force.
Keywords
Dynamic Soil Structure Interaction, Discrete Element Methods, Boundary Element Method, particle collision
