TY - EJOU AU - Junior, Eduardo T Lima AU - Venturini, Wilson S AU - Benallal, Ahmed TI - Coupled Evolution of Damage and Fluid Flow in a Mandel-type Problem T2 - Computer Modeling in Engineering \& Sciences PY - 2011 VL - 78 IS - 3&4 SN - 1526-1506 AB - Some considerations on the numerical analysis of brittle rocks are presented in this paper. The rock is taken as a poro-elastic domain, in full-saturated condition, based on the Biot's Theory. The solid matrix of this porous medium is considered to be susceptible to isotropic damage occurrence. An implicit boundary element method (BEM) formulation, based on time-independent fundamental solutions, is developed and implemented to couple the fluid flow and two-dimensional elastostatics problems. The integration over boundary elements is evaluated by using a numerical Gauss procedure. A semi-analytical scheme for the case of triangular domain cells is followed to carry out the relevant domain integrals. The non-linear problem is solved by a Newton-Raphson procedure. A geomechanical problem is analyzed in order to illustrate the efficiency of the implemented formulation. KW - saturated porous media KW - isotropic damage KW - consolidation KW - BEM DO - 10.3970/cmes.2011.078.169