UM MODELO DE ELEMENTOS FINITOS PARA A ANÁLISE ACOPLADA DE PROBLEMAS DE ADENSAMENTO COM SIMETRIA AXIAL

by Moreira, Maicon Soares

This work presents a finite element model for the analysis of soil strain and consolidation under axissymetric conditions. The starting point are the governing differential equations which are solved by using the finite element method based on the weighted residual method adopting Galerkin?s formulation. The governing equations are integrated over a domain composed of quadrilateral finite elements with four nodes and yield a set of algebraic equations in function of the displacement and of the pore pressure. The equations for each one of the elements are added in order to obtain a global system of equations. The solving of this system leads to the solution of the problem. The validation occurs through comparison with results of analytical solutions based on the elasticity theory, consolidation theory and laboratory tests. The results were satisfactory and show differences that may happen due to the simplifications taken in account in the model.