Simulation of Transient Mechanical Wave Propagation in Heterogeneous Soils

Abstract

A Finite Element Method using a C++ code is developed to study the mechanical wave propagation in saturated porous soils. The modelization uses the complete Biot theory including the couplings between the solid and fluid phases. A matrix-free algorithm and a selection data technique are implemented in the code. Researches are focused on homogeneous and heterogeneous semi-infinite media in the case of transient regimes. The time domain results present the displacements over and within the half-space. In particular, we will see that the fluid wave front is strongly dependent on the proportion of heterogeneities in the ground.

Numerical Modelling of Poroviscoelastic Grounds in the Time Domain Using a Parallel Approach

“…Previous 2D results, obtained with the sequential version of the code, have been presented for instance in [9] and [12]. Parametric studies on the influence of the different couplings and an approach of heterogeneous soil have been carried out.…”

“…This approach includes the whole Biot theory with all the couplings which represent the interactions between the solid and fluid phases. The sequential version has previously been presented at ICCS 2005, Mesgouez et al [9].…”